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Tang M, Song X, Wang C, Jiang L, Zhou Y, Wang Y, Zhu J, Wang Y, Gao J, He X, Xu H. Interfacial Polarization Strategy to Electroactive Poly(lactic acid) Nanofibers for Humidity-Resistant Respiratory Protection and Machine Learning-Assisted Monitoring. ACS APPLIED MATERIALS & INTERFACES 2024; 16:45078-45090. [PMID: 39155485 DOI: 10.1021/acsami.4c12653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/20/2024]
Abstract
The advancement of intelligent and biodegradable respiratory protection equipment is pivotal in the realm of human health engineering. Despite significant progress, achieving a balance between efficient filtration and intelligent monitoring remains a great challenge, especially under conditions of high relative humidity (RH) and high airflow rate (AR). Herein, we proposed an interfacial stereocomplexation (ISC) strategy to facilitate intensive interfacial polarization for poly(lactic acid) (PLA) nanofibrous membranes, which were customized for machine learning-assisted respiratory diagnosis. Theoretical principles underlying the facilitated formation of the electroactive phase and aligned PLA chains were quantitatively depicted in the ISC-PLA nanofibers, contributing to the increased dielectric constant and surface potential (as high as 2.2 and 5.1 kV, respectively). Benefiting from the respiration-driven triboelectric mechanisms, the ISC-PLA demonstrated a high PM0.3 filtration efficiency of over 99% with an ultralow pressure drop (75 Pa), even in challenging circumstances (95 ± 5% RH, AR of 85 L/min). Furthermore, we implemented the ISC-PLA with multifunction respiratory monitoring (response time of 0.56 s and recovery time of 0.25 s) and wireless transmission technology, yielding a high recognition rate of 83% for personal breath states. This innovation has practical implications for health management and theoretical advancements in respiratory protection equipment.
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Affiliation(s)
- Mengke Tang
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China
| | - Xinyi Song
- School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China
- Jiangsu Engineering Research Center of Dust Control and Occupational Protection, Xuzhou 221008, China
| | - Cunmin Wang
- School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China
- Jiangsu Engineering Research Center of Dust Control and Occupational Protection, Xuzhou 221008, China
| | - Liang Jiang
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China
| | - Yuhong Zhou
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China
| | - Yuanchunzhi Wang
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China
| | - Jintuo Zhu
- School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China
- Jiangsu Engineering Research Center of Dust Control and Occupational Protection, Xuzhou 221008, China
| | - Yanqing Wang
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China
| | - Jiefeng Gao
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 272100, China
| | - Xinjian He
- School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China
| | - Huan Xu
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China
- Jiangsu Engineering Research Center of Dust Control and Occupational Protection, Xuzhou 221008, China
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Tang L, Wang D, Sun S, Cheng Q, Zhang L, Xia W, Zheng J, Cui J, Wang Y, Zhou H. Fiber-in-Tube Electrifiable Structure for Virus Filtration Self-Generated Static Electricity by Vibration/Sound. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38701174 DOI: 10.1021/acsami.4c04535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2024]
Abstract
Fiber has been considered as an ideal material for virus insulation due to the readily available electrostatic adsorption. However, restricted by the electrostatic attenuation and filtration performance decline, their long-lasting applications are unable to satisfy the requirements of medical protective equipment for major medical and health emergencies such as global epidemics, which results in both a waste of resources and environmental pollution. We overcame these issues by constructing a fiber-in-tube structure, achieving the robust reusability of fibrous membranes. Core fibers within the hollow could form generators with tube walls of shell fibers to provide persistent, renewable static electricity via piezoelectricity and triboelectricity. The PM0.3 insulation efficiency achieved 98% even after 72 h of humidity and heat aging, through beating and acoustic waves, which is greatly improved compared with that of traditional nonwoven fabric (∼10% insulation). A mask spun with our fiber also has a low breathing resistance (differential pressure <24.4 Pa/cm2). We offer an approach to enrich multifunctional fiber for developing electrifiable filters, which make the fiber-in-tube filtration membrane able to durably maintain a higher level of protective performance to reduce the replacement and provide a new train of thought for the preparation of other high-performance protective products.
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Affiliation(s)
- Lianwei Tang
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Dong Wang
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Shuang Sun
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Qikuang Cheng
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Lu Zhang
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Weibang Xia
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Jiaqi Zheng
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Jingqiang Cui
- Henan Key Laboratory of Medical Polymer Materials Technology and Application, TuoRen Medical Device Research & Development Institute Co., Ltd., Health Technology Industry Park, Changyuan County, Henan 453000, PR China
| | - Yunming Wang
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Huamin Zhou
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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Zhu M, Deng Y, Zheng Y, Hu X, Xu W, Xiong R, Huang C. Tribo-charge enhanced and cellulose based biodegradable nanofibrous membranes with highly fluffy structure for air filtration and self-powered respiration monitoring systems. JOURNAL OF HAZARDOUS MATERIALS 2024; 468:133770. [PMID: 38401212 DOI: 10.1016/j.jhazmat.2024.133770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 01/17/2024] [Accepted: 02/09/2024] [Indexed: 02/26/2024]
Abstract
Recently, the demand for healthcare products especially wearable smart masks is increasing. The biosafety and degradability of smart masks are crucial for human health and environmental protection. However, the development of biodegradable and biocompatible fibrous membranes with high filtration efficiency and low pressure drop is still a challenge. How to realize the collaborative improvement between air filtration efficiency and pressure drop of the nanofibrous membrane is still a challenge. Here, a tribo-charge enhanced and biodegradable nanofibrous membranes (TCB NFMs) with highly fluffy structure for air filtration and self-powered respiration monitoring systems is reported for the first time. The filtration efficiency and pressure drop of the prepared membranes for 0.3 µm NaCl particulates is 99.971% and 41.67 Pa. The TCB NFMs based smart mask possesses a series of satisfactory and excellent characteristics, such as self-powered, biodegradable, biocompatible, high filtration efficiency, and low pressure drop, which is highly promising for application in air filtration systems and intelligent wearable respiration monitoring systems.
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Affiliation(s)
- Miaomiao Zhu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; Jiangsu provincial key lab for the chemistry and utilization of agro-forest biomass, Nanjing Forestry University, Nanjing 210037, China
| | - Yankang Deng
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Yong Zheng
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang 443002, China
| | - Xuan Hu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Wenxuan Xu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Ranhua Xiong
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; Jiangsu provincial key lab for the chemistry and utilization of agro-forest biomass, Nanjing Forestry University, Nanjing 210037, China
| | - Chaobo Huang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; Jiangsu provincial key lab for the chemistry and utilization of agro-forest biomass, Nanjing Forestry University, Nanjing 210037, China.
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Wang F, Wang S, Liu Y, Ouyang S, Sun D, Yang X, Li J, Wu Z, Qian J, Zhao Z, Wang L, Jia C, Ma S. Cellulose Nanofiber-Based Triboelectric Nanogenerators for Efficient Air Filtration in Harsh Environments. NANO LETTERS 2024; 24:2861-2869. [PMID: 38408922 DOI: 10.1021/acs.nanolett.3c05089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Advanced portable healthcare devices with high efficiencies, small pressure drops, and high-temperature resistance are urgently desired in harsh environments with high temperatures, high humidities, and high levels of atmospheric pollution. Triboelectric nanogenerators (TENGs), which serve as energy converters in a revolutionary self-powered sensor device, present a sustainable solution for meeting these requirements. In this work, we developed a porous negative triboelectric material by synthesizing ZIF-8 on the surface of a cellulose/graphene oxide aerogel, grafting it with trimethoxy(1H,1H,2H,2H-heptadecafluorodecyl)silane, and adding a negative corona treatment, and it was combined with a positive triboelectric material to create a cellulose nanofiber-based TENG self-powered filter. The devices achieved a balance between a small pressure drop (53 Pa) and high filtration efficiency (98.97%, 99.65%, and 99.93% for PM0.3, PM0.5, and PM1, respectively), demonstrating robust filtration properties at high temperatures and high humidities. Our work provides a new approach for developing self-powered wearable healthcare devices with excellent air filtration properties.
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Affiliation(s)
- Feijie Wang
- Jiangsu Provincial Key Laboratory of Food Advanced Manufacturing Equipment Technology, School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China
| | - Suyang Wang
- Jiangsu Provincial Key Laboratory of Food Advanced Manufacturing Equipment Technology, School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China
| | - Yichi Liu
- Jiangsu Provincial Key Laboratory of Food Advanced Manufacturing Equipment Technology, School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China
| | - Shiqiang Ouyang
- Jiangsu Provincial Key Laboratory of Food Advanced Manufacturing Equipment Technology, School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China
| | - Danni Sun
- Jiangsu Provincial Key Laboratory of Food Advanced Manufacturing Equipment Technology, School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China
| | - Xiaoye Yang
- Jiangsu Provincial Key Laboratory of Food Advanced Manufacturing Equipment Technology, School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China
| | - Jinmin Li
- Jiangsu Provincial Key Laboratory of Food Advanced Manufacturing Equipment Technology, School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China
| | - Zhen Wu
- Jiangsu Provincial Key Laboratory of Food Advanced Manufacturing Equipment Technology, School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China
| | - Jing Qian
- Jiangsu Provincial Key Laboratory of Food Advanced Manufacturing Equipment Technology, School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China
| | - Zhicheng Zhao
- College of Textile Science and Engineering, Jiangnan University, Wuxi 214122, China
| | - Liqiang Wang
- Jiangsu Provincial Key Laboratory of Food Advanced Manufacturing Equipment Technology, School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China
| | - Chao Jia
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Shufeng Ma
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
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Olivier DN, Wang W, Liu C, Wang Z, Ding B. Survey on Energy Harvesting for Biomedical Devices: Applications, Challenges and Future Prospects for African Countries. SENSORS (BASEL, SWITZERLAND) 2023; 24:163. [PMID: 38203025 PMCID: PMC11326079 DOI: 10.3390/s24010163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 12/15/2023] [Accepted: 12/15/2023] [Indexed: 01/12/2024]
Abstract
Self-powered biomedical devices, which are the new vision of Internet Of Things (IOT) healthcare, are facing many technical and application challenges. Many research works have reported biomedical devices and self-powered applications for healthcare, along with various strategies to improve the monitoring time of self-powered devices or to eliminate the dependence on electrochemical batteries. However, none of these works have especially assessed the development and application of healthcare devices in an African context. This article provides a comprehensive review of self-powered devices in the biomedical research field, introduces their applications for healthcare, evaluates their status in Africa by providing a thorough review of existing biomedical device initiatives and available financial and scientific cooperation institutions in Africa for the biomedical research field, and highlights general challenges for implementing self-powered biomedical devices and particular challenges related to developing countries. The future perspectives of the aforementioned research field are provided, as well as an architecture for improving this research field in developing countries.
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Affiliation(s)
- Djakou Nekui Olivier
- Tianjin Key Laboratory of Nonlinear Dynamics and Control, School of Mechanical Engineering, Tianjin University, Tianjin 300350, China
| | - Wei Wang
- Tianjin Key Laboratory of Nonlinear Dynamics and Control, School of Mechanical Engineering, Tianjin University, Tianjin 300350, China
| | - Cheng Liu
- Tianjin Key Laboratory of Nonlinear Dynamics and Control, School of Mechanical Engineering, Tianjin University, Tianjin 300350, China
| | - Zhixia Wang
- Tianjin Key Laboratory of Nonlinear Dynamics and Control, School of Mechanical Engineering, Tianjin University, Tianjin 300350, China
| | - Bei Ding
- Tianjin Key Laboratory of Nonlinear Dynamics and Control, School of Mechanical Engineering, Tianjin University, Tianjin 300350, China
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Wang C, Song X, Li T, Zhu X, Yang S, Zhu J, He X, Gao J, Xu H. Biodegradable Electroactive Nanofibrous Air Filters for Long-Term Respiratory Healthcare and Self-Powered Monitoring. ACS APPLIED MATERIALS & INTERFACES 2023; 15:37580-37592. [PMID: 37490285 DOI: 10.1021/acsami.3c08490] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
The concept of triboelectric nanogenerator (TENG)-based fibrous air filters, in which the electroactive fibers are ready to enhance the electrostatic adsorption by sustainable energy harvesting, is appealing for long-term respiratory protection and in vivo real-time monitoring. This effort discloses a self-reinforcing electroactivity strategy to confer extreme alignment and refinement of the electrospun poly(lactic acid) (PLA) nanofibers, significantly facilitating formation of electroactive phases (i.e., β-phase and highly aligned chains and dipoles) and promotion of polarization and electret properties. It endowed the PLA nanofibrous membranes (NFMs) with largely increased surface potential and filtration performance, as exemplified by efficient removal of PM0.3 and PM2.5 (90.68 and 99.82%, respectively) even at the highest airflow capacity of 85 L/min. With high electroactivity and a well-controlled morphology, the PLA NFMs exhibited superior TENG properties triggered by regular respiratory vibrations, enabling 9.21-fold increase of surface potential (-1.43 kV) and nearly 68% increase of PM0.3 capturing (94.3%) compared to those of conventional PLA membranes. The remarkable TENG mechanisms were examined to elaborately monitor the personal respiration characteristics, particularly those triggered large and rapid variations of output voltages like coughing and tachypnea. Featuring desirable biocompatibility and degradability, the self-powered PLA NFMs permit promising applications in the fabrication of ecofriendly air filters toward high-performance purification and intelligent monitoring.
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Affiliation(s)
- Cunmin Wang
- School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China
| | - Xinyi Song
- School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China
| | - Tian Li
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China
| | - Xuanjin Zhu
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China
| | - Shugui Yang
- Shaanxi International Research Center for Soft Matter, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, China
| | - Jintuo Zhu
- School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China
| | - Xinjian He
- School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China
- Jiangsu Engineering Research Center of Dust Control and Occupational Protection, Xuzhou 221008, China
| | - Jiefeng Gao
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 272100, China
| | - Huan Xu
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China
- Jiangsu Engineering Research Center of Dust Control and Occupational Protection, Xuzhou 221008, China
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Zhang W, Wu G, Zeng H, Li Z, Wu W, Jiang H, Zhang W, Wu R, Huang Y, Lei Z. The Preparation, Structural Design, and Application of Electroactive Poly(vinylidene fluoride)-Based Materials for Wearable Sensors and Human Energy Harvesters. Polymers (Basel) 2023; 15:2766. [PMID: 37447413 DOI: 10.3390/polym15132766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 06/17/2023] [Accepted: 06/19/2023] [Indexed: 07/15/2023] Open
Abstract
Owing to their biocompatibility, chemical stability, film-forming ability, cost-effectiveness, and excellent electroactive properties, poly(vinylidene fluoride) (PVDF) and PVDF-based polymers are widely used in sensors, actuators, energy harvesters, etc. In this review, the recent research progress on the PVDF phase structures and identification of different phases is outlined. Several approaches for obtaining the electroactive phase of PVDF and preparing PVDF-based nanocomposites are described. Furthermore, the potential applications of these materials in wearable sensors and human energy harvesters are discussed. Finally, some challenges and perspectives for improving the properties and boosting the applications of these materials are presented.
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Affiliation(s)
- Weiran Zhang
- School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China
- National & Local Joint Engineering Research Center for Advanced Packaging Material and Technology, Hunan University of Technology, Zhuzhou 412007, China
| | - Guohua Wu
- School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China
| | - Hailan Zeng
- School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China
| | - Ziyu Li
- School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China
| | - Wei Wu
- School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China
| | - Haiyun Jiang
- School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China
- National & Local Joint Engineering Research Center for Advanced Packaging Material and Technology, Hunan University of Technology, Zhuzhou 412007, China
| | - Weili Zhang
- School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China
| | - Ruomei Wu
- School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China
| | - Yiyang Huang
- Shenzhen Glareway Technology Co., Ltd., Shenzhen 518110, China
| | - Zhiyong Lei
- Shenzhen Glareway Technology Co., Ltd., Shenzhen 518110, China
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Cimini A, Imperi E, Picano A, Rossi M. Electrospun nanofibers for medical face mask with protection capabilities against viruses: State of the art and perspective for industrial scale-up. APPLIED MATERIALS TODAY 2023; 32:101833. [PMID: 37152683 PMCID: PMC10151159 DOI: 10.1016/j.apmt.2023.101833] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 04/13/2023] [Accepted: 04/25/2023] [Indexed: 05/09/2023]
Abstract
Face masks have proven to be a useful protection from airborne viruses and bacteria, especially in the recent years pandemic outbreak when they effectively lowered the risk of infection from Coronavirus disease (COVID-19) or Omicron variants, being recognized as one of the main protective measures adopted by the World Health Organization (WHO). The need for improving the filtering efficiency performance to prevent penetration of fine particulate matter (PM), which can be potential bacteria or virus carriers, has led the research into developing new methods and techniques for face mask fabrication. In this perspective, Electrospinning has shown to be the most efficient technique to get either synthetic or natural polymers-based fibers with size down to the nanoscale providing remarkable performance in terms of both particle filtration and breathability. The aim of this Review is to give further insight into the implementation of electrospun nanofibers for the realization of the next generation of face masks, with functionalized membranes via addiction of active material to the polymer solutions that can give optimal features about antibacterial, antiviral, self-sterilization, and electrical energy storage capabilities. Furthermore, the recent advances regarding the use of renewable materials and green solvent strategies to improve the sustainability of electrospun membranes and to fabricate eco-friendly filters are here discussed, especially in view of the large-scale nanofiber production where traditional membrane manufacturing may result in a high environmental and health risk.
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Affiliation(s)
- A Cimini
- Department of Basic and Applied Sciences for Engineering, University of Rome Sapienza, Rome 00161, Italy
- LABOR s.r.l., Industrial Research Laboratory, Via Giacomo Peroni, 386, Rome, Italy
| | - E Imperi
- LABOR s.r.l., Industrial Research Laboratory, Via Giacomo Peroni, 386, Rome, Italy
| | - A Picano
- LABOR s.r.l., Industrial Research Laboratory, Via Giacomo Peroni, 386, Rome, Italy
| | - M Rossi
- Department of Basic and Applied Sciences for Engineering, University of Rome Sapienza, Rome 00161, Italy
- Research Center for Nanotechnology for Engineering of Sapienza (CNIS), University of Rome Sapienza, Rome 00185, Italy
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Li A, Cui H, Sheng Y, Qiao J, Li X, Huang H. Global plastic upcycling during and after the COVID-19 pandemic: The status and perspective. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 2023; 11:110092. [PMID: 37200549 PMCID: PMC10167783 DOI: 10.1016/j.jece.2023.110092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 04/10/2023] [Accepted: 05/08/2023] [Indexed: 05/20/2023]
Abstract
Plastic pollution has become one of the most pressing environmental issues worldwide since the vast majority of post-consumer plastics are hard to degrade in the environment. The coronavirus disease (COVID-19) pandemic had disrupted the previous effort of plastic pollution mitigation to a great extent due to the overflow of plastic-based medical waste. In the post-pandemic era, the remaining challenge is how to motivate global action towards a plastic circular economy. The need for one package of sustainable and systematic plastic upcycling approaches has never been greater to address such a challenge. In this review, we summarized the threat of plastic pollution during COVID-19 to public health and ecosystem. In order to solve the aforementioned challenges, we present a shifting concept, regeneration value from plastic waste, that provides four promising pathways to achieve a sustainable circular economy: 1) Increasing reusability and biodegradability of plastics; 2) Transforming plastic waste into high-value products by chemical approaches; 3) The closed-loop recycling can be promoted by biodegradation; 4) Involving renewable energy into plastic upcycling. Additionally, the joint efforts from different social perspectives are also encouraged to create the necessary economic and environmental impetus for a circular economy.
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Affiliation(s)
- Anni Li
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210009, People's Republic of China
| | - Haiyang Cui
- RWTH Aachen University, Templergraben 55, 52062 Aachen, Germany
| | - Yijie Sheng
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210009, People's Republic of China
| | - Jie Qiao
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210009, People's Republic of China
| | - Xiujuan Li
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210009, People's Republic of China
| | - He Huang
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210009, People's Republic of China
- School of Pharmaceutical Sciences, Nanjing Tech University, No. 30 South Puzhu Road, Nanjing 211816, People's Republic of China
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10
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Jiang Y, Fu Y, Xu X, Guo X, Wang F, Xu X, Huang YW, Shi J, Shen C. Production of singlet oxygen from photosensitizer erythrosine for facile inactivation of coronavirus on mask. ENVIRONMENT INTERNATIONAL 2023; 177:107994. [PMID: 37267731 DOI: 10.1016/j.envint.2023.107994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 04/28/2023] [Accepted: 05/23/2023] [Indexed: 06/04/2023]
Abstract
The global health crisis caused by the COVID-19 pandemic has led to a surge in demand and use of personal protective equipment (PPE) such as masks, putting great pressure on social production and the environment.It is urgent to find an efficient and non-destructive disinfection method for the safe reuse of PPE. This study proposes a PPE disinfection method that uses erythrosine, a U.S. Food and Drug Administration-approved food dye, as photosensitizer to produce singlet oxygen for virus inactivation, and indicates the completion of disinfection by its photobleaching color change.After spraying 100 μL of 10 μM erythrosine on the surface of the mask for 3 times and light exposure for 25 min, the titer of coronavirus decreased by more than 99.999%, and the color of erythrosine on the mask surface disappeared. In addition, the structure of the mask was intact and the filtration efficiency was maintained at > 95% after 10 cycles of erythrosine treatment.Therefore, this disinfection method can provide at least 10 cycles of reuse with the advantages of high safety and convenient, and the completion of disinfection can be indicated by its photobleaching, which is suitable for hospitals and daily life to reduce the consumption of PPE.
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Affiliation(s)
- Yunhan Jiang
- Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, PR China
| | - Yulong Fu
- Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, PR China
| | - Xiaojie Xu
- Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, PR China
| | - Xiaoguang Guo
- Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, PR China
| | - Feiyu Wang
- Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, PR China
| | - Xin Xu
- Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, PR China
| | - Yao-Wei Huang
- Department of Veterinary Medicine, Zhejiang University, Hangzhou 310058, PR China
| | - Jiyan Shi
- Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, PR China
| | - Chaofeng Shen
- Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, PR China.
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11
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Yang Y, Yang Y, Huang J, Li S, Meng Z, Cai W, Lai Y. Electrospun Nanocomposite Fibrous Membranes for Sustainable Face Mask Based on Triboelectric Nanogenerator with High Air Filtration Efficiency. ADVANCED FIBER MATERIALS 2023; 5:1-14. [PMID: 37361106 PMCID: PMC10184097 DOI: 10.1007/s42765-023-00299-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Accepted: 05/02/2023] [Indexed: 06/28/2023]
Abstract
Abstract Air pollution caused by the rapid development of industry has always been a great issue to the environment and human being's health. However, the efficient and persistent filtration to PM0.3 remains a great challenge. Herein, a self-powered filter with micro-nano composite structure composed of polybutanediol succinate (PBS) nanofiber membrane and polyacrylonitrile (PAN) nanofiber/polystyrene (PS) microfiber hybrid mats was prepared by electrospinning. The balance between pressure drop and filtration efficiency was achieved through the combination of PAN and PS. In addition, an arched TENG structure was created using the PAN nanofiber/PS microfiber composite mat and PBS fiber membrane. Driven by respiration, the two fiber membranes with large difference in electronegativity achieved contact friction charging cycles. The open-circuit voltage of the triboelectric nanogenerator (TENG) can reach to about 8 V, and thus the high filtration efficiency for particles was achieved by the electrostatic capturing. After contact charging, the filtration efficiency of the fiber membrane for PM0.3 can reach more than 98% in harsh environments with a PM2.5 mass concentration of 23,000 µg/m3, and the pressure drop is about 50 Pa, which doesn't affect people's normal breathing. Meanwhile, the TENG can realize self-powered supply by continuously contacting and separating the fiber membrane driven by respiration, which can ensure the long-term stability of filtration efficiency. The filter mask can maintain a high filtration efficiency (99.4%) of PM0.3 for 48 consecutive hours in daily environments. Graphical abstract Supplementary Information The online version contains supplementary material available at 10.1007/s42765-023-00299-z.
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Affiliation(s)
- Yue Yang
- College of Chemical Engineering, Fuzhou University, 350116 Fuzhou, People’s Republic of China
| | - Yuchen Yang
- College of Chemical Engineering, Fuzhou University, 350116 Fuzhou, People’s Republic of China
- Qingyuan Innovation Laboratory, 362801 Quanzhou, People’s Republic of China
| | - Jianying Huang
- College of Chemical Engineering, Fuzhou University, 350116 Fuzhou, People’s Republic of China
- Qingyuan Innovation Laboratory, 362801 Quanzhou, People’s Republic of China
| | - Shuhui Li
- Department of Chemistry, University College London, London, WC1H 0AJ UK
- Wenzhou Institute, University of Chinese Academy of Science, Zhejiang 325000 Wenzhou, People’s Republic of China
| | - Zheyi Meng
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, 201620 Shanghai, People’s Republic of China
| | - Weilong Cai
- College of Chemical Engineering, Fuzhou University, 350116 Fuzhou, People’s Republic of China
- Qingyuan Innovation Laboratory, 362801 Quanzhou, People’s Republic of China
| | - Yuekun Lai
- College of Chemical Engineering, Fuzhou University, 350116 Fuzhou, People’s Republic of China
- Qingyuan Innovation Laboratory, 362801 Quanzhou, People’s Republic of China
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12
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Yan J, Tang Z, Mei N, Zhang D, Zhong Y, Sheng Y. Triboelectric Nanogenerators for Efficient Low-Frequency Ocean Wave Energy Harvesting with Swinging Boat Configuration. MICROMACHINES 2023; 14:748. [PMID: 37420981 DOI: 10.3390/mi14040748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/23/2023] [Accepted: 03/24/2023] [Indexed: 07/09/2023]
Abstract
To reach ocean resources, sea activities and marine equipment variety are increasing, requiring offshore energy supply. Marine wave energy, the marine renewable energy with the most potential, offers massive energy storage and great energy density. This research proposes a swinging boat-type triboelectric nanogenerator concept for low-frequency wave energy collection. Triboelectric electronanogenerators with electrodes and a nylon roller make up the swinging boat-type triboelectric nanogenerator (ST-TENG). COMSOL electrostatic simulations and power generation concepts of independent layer and vertical contact separation modes of operation explain the device functionality. By rolling the drum at the bottom of the integrated boat-like device, it is possible to capture wave energy and convert it into electrical energy. Based on it, the ST load, TENG charging, and device stability are evaluated. According to the findings, the maximum instantaneous power of the TENG in the contact separation and independent layer modes reaches 246 W and 112.5 μW at matched loads of 40 MΩ and 200 MΩ, respectively. Additionally, the ST-TENG can retain the usual functioning of the electronic watch for 45 s while charging a 33 µF capacitor to 3 V in 320 s. Long-term low-frequency wave energy collection is possible with the device. The ST-TENG develops novel methods for large-scale blue energy collection and maritime equipment power.
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Affiliation(s)
- Jin Yan
- Ship and Maritime College, Guangdong Ocean University, Zhanjiang 524088, China
- Mechanical Engineering College, Guangdong Ocean University, Zhanjiang 524088, China
- Shenzhen Research Institute of Guangdong Ocean University, Shenzhen 518120, China
| | - Zhi Tang
- Mechanical Engineering College, Guangdong Ocean University, Zhanjiang 524088, China
| | - Naerduo Mei
- Ship and Maritime College, Guangdong Ocean University, Zhanjiang 524088, China
| | - Dapeng Zhang
- Ship and Maritime College, Guangdong Ocean University, Zhanjiang 524088, China
| | - Yinghao Zhong
- Ship and Maritime College, Guangdong Ocean University, Zhanjiang 524088, China
| | - Yuxuan Sheng
- Ship and Maritime College, Guangdong Ocean University, Zhanjiang 524088, China
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13
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Vázquez-López A, Del Río Saez JS, de la Vega J, Ao X, Wang DY. All-Fabric Triboelectric Nanogenerator (AF-TENG) Smart Face Mask: Remote Long-Rate Breathing Monitoring and Apnea Alarm. ACS Sens 2023; 8:1684-1692. [PMID: 36976959 DOI: 10.1021/acssensors.2c02825] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
Abstract
Since the beginning of the COVID-19 pandemic, the use of face masks has become not only mandatory in several countries but also an acceptable approach for combating the pandemic. In the quest for designing an effective and useful face mask, triboelectric nanogenerators (TENGs) have been recently proposed. Novel functionalities are provided with the use of TENGs in face masks due to the induced triboelectrification generated by the exhaled and inhaled breath, allowing their use as an energy sensor. Nonetheless, within the face mask, the presence of nontextile plastics or other common triboelectric (TE) materials can be undesired. Herein, we propose the use of an all-fabric TENG (AF-TENG) with the use of high molecular weight polyethylene (UHMWPE) and cotton fabric as negative and positive triboelectric layers, respectively. With these materials, it is possible to detect the breathing of the patient, which in the case of not detecting a signal over a few minutes can trigger an alarm locally, providing valuable time. Also, in this article, we have sent breathing signals locally and remotely to distances up to 20 km via Wi-Fi and LoRa, the same as warning signals in the case of detecting anomalies. This work reveals the use of TENGs in smart face masks as an important tool to be used in difficult epidemiological periods to the general public, bringing much more comfort and relaxation to patients and elderly in today's society, and based on pristine eco-friendly materials.
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Affiliation(s)
- Antonio Vázquez-López
- IMDEA Materials Institute, C/Eric Kandel, 2, Getafe, 28906 Madrid, Spain
- Materials Science and Engineering Area, Escuela Superior de Ciencias Experimentales y Tecnología, Universidad Rey Juan Carlos, C/Tulipán s/n, 28933 Madrid, Spain
| | - José Sánchez Del Río Saez
- IMDEA Materials Institute, C/Eric Kandel, 2, Getafe, 28906 Madrid, Spain
- Departamento de Ingeniería Eléctrica, Electrónica Automática y Física Aplicada, ETSIDI, Universidad Politécnica de Madrid, Ronda de Valencia 3, 28012 Madrid, Spain
- Institute for Research in Technology, ICAI School of Engineering, Pontifical Comillas University, Madrid, C/Santa Cruz de Marcenado, 26, 28015 Madrid, Spain
| | - Jimena de la Vega
- IMDEA Materials Institute, C/Eric Kandel, 2, Getafe, 28906 Madrid, Spain
| | - Xiang Ao
- IMDEA Materials Institute, C/Eric Kandel, 2, Getafe, 28906 Madrid, Spain
| | - De-Yi Wang
- IMDEA Materials Institute, C/Eric Kandel, 2, Getafe, 28906 Madrid, Spain
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14
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Zhang Z, Jia S, Wu W, Xiao G, Sundarrajan S, Ramakrishna S. Electrospun transparent nanofibers as a next generation face filtration media: A review. BIOMATERIALS ADVANCES 2023; 149:213390. [PMID: 36963249 DOI: 10.1016/j.bioadv.2023.213390] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 03/10/2023] [Accepted: 03/14/2023] [Indexed: 03/19/2023]
Abstract
The development of fascinating materials with functional properties has revolutionized the humankind with materials comfort, stopped the spreading of diseases, relieving the environmental pollution pressure, economized government research funds, and prolonged their serving life. The outbreak of Coronavirus Disease 2019 (COVID-19), which is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has triggered great global public health concern. Face masks are crucial tools to impede the spreading of SARS-CoV-2 from human to human. However, current face masks exhibit in a variety of colors (opaque), like blue, black, red, etc., leading to a communication barrier between the doctor and the deaf-mute patient when wearing a mask. High optical transparency filters can be utilized for both personal protection and lip-reading. Thus, shaping face air filter into a transparent appearance is an urgent need. Electrospinning technology, as a mature technology, is commonly used to form nanofiber materials utilizing high electrical voltage. With the alteration of the diameters of nanofibers, and proper material selection, it would be possible to make the transparent face mask. In this article, the research progress in the transparent face air filter is reviewed with emphasis on three parts: mechanism of the electrospinning process and light transmission, preparation of transparent face air filter, and their innovative potential. Through the assessment of classic cases, the benefits and drawbacks of various preparation strategies and products are evaluated, to provide general knowledge for the needs of different application scenarios. In the end, the development directions of transparent face masks in protective gear, particularly their novel functional applications and potential contributions in the prevention and control of the epidemic are also proposed.
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Affiliation(s)
- Zongqi Zhang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China; Faculty of Mechanical Engineering, National University of Singapore, 117574, Singapore
| | - Shuyue Jia
- Faculty of Mechanical Engineering, National University of Singapore, 117574, Singapore; School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Wenting Wu
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Guomin Xiao
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China.
| | - Subramanian Sundarrajan
- Faculty of Mechanical Engineering, National University of Singapore, 117574, Singapore; Department of Prosthodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical & Technical Sciences, Saveetha University, Chennai 600077, Tamil Nadu, India.
| | - Seeram Ramakrishna
- Faculty of Mechanical Engineering, National University of Singapore, 117574, Singapore.
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15
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Filipič G, Pirker L, Krajnc AP, Ješelnik M, Remškar M. Enhanced Filtration Efficiency of Natural Materials with the Addition of Electrospun Poly(vinylidene fluoride-co-hexafluoropropylene) Fibres. MATERIALS (BASEL, SWITZERLAND) 2023; 16:2314. [PMID: 36984195 PMCID: PMC10054789 DOI: 10.3390/ma16062314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 03/09/2023] [Accepted: 03/11/2023] [Indexed: 06/18/2023]
Abstract
Pollutants and infectious diseases can spread through air with airborne droplets and aerosols. A respiratory mask can decrease the amount of pollutants we inhale and it can protect us from airborne diseases. With the onset of the COVID-19 pandemic, masks became an everyday item used by a lot of people around the world. As most of them are for a single use, the amount of non-recyclable waste increased dramatically. The plastic from which the masks are made pollutes the environment with various chemicals and microplastic. Here, we investigated the time- and size-dependent filtration efficiency (FE) of aerosols in the range of 25.9 to 685.4 nm of five different natural materials whose FE was enhanced using electrospun poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF) fibres. A scanning electron microscope (SEM) was used to determine the morphology and structure of the natural materials as well as the thickness of the PVDF fibres, while the phase of the electrospun fibres was determined by Raman spectroscopy. A thin layer of the electrospun PVDF fibres with the same grammage was sandwiched between two sheets of natural materials, and their FE increased up to 80%. By varying the grammature of the electrospun polymer, we tuned the FE of cotton from 82.6 to 99.9%. Thus, through the optimization of the grammage of the electrospun polymer, the amount of plastic used in the process can be minimized, while achieving sufficiently high FE.
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Affiliation(s)
- Gregor Filipič
- Jozef Stefan Institute, Jamova Cesta 39, 1000 Ljubljana, Slovenia
| | - Luka Pirker
- Jozef Stefan Institute, Jamova Cesta 39, 1000 Ljubljana, Slovenia
- Department of Electrochemical Materials, J. Heyrovsky Institute of Physical Chemistry, Dolejškova 3, 182 23 Prague, Czech Republic
| | - Anja Pogačnik Krajnc
- Jozef Stefan Institute, Jamova Cesta 39, 1000 Ljubljana, Slovenia
- Faculty of Mathematics and Physics, University of Ljubljana, Jadranska Ulica 19, 1000 Ljubljana, Slovenia
| | - Marjan Ješelnik
- smartMelamine d.o.o., Tomšičeva Cesta 9, 1330 Kočevje, Slovenia
| | - Maja Remškar
- Jozef Stefan Institute, Jamova Cesta 39, 1000 Ljubljana, Slovenia
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16
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Duan Q, Peng W, He J, Zhang Z, Wu Z, Zhang Y, Wang S, Nie S. Rational Design of Advanced Triboelectric Materials for Energy Harvesting and Emerging Applications. SMALL METHODS 2023; 7:e2201251. [PMID: 36563114 DOI: 10.1002/smtd.202201251] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Indexed: 06/17/2023]
Abstract
The properties of materials play a significant role in triboelectric nanogenerators (TENGs). Advanced triboelectric materials for TENGs have attracted tremendous attention because of their superior advantages (e.g., high specific surface area, high porosity, and customizable macrostructure). These advanced materials can be extensively applied in numerous fields, including energy harvester, wearable electronics, filtration, and self-powered sensors. Hence, designing triboelectric materials as advanced functional materials is important for the development of TENGs. Herein, the structural modification methods based on electrospinning to improve the triboelectric properties and the latest research progress in this kind of TENGs are systematically summarized. Preparation methods and design trends of nanofibers, microspheres, hierarchical structures, and doping nanomaterials are highlighted. The factors influencing the formation and properties of triboelectric materials are considered. Furthermore, the latest progress on the applications of TENGs is systematically elaborated. Finally, the challenges in the development of triboelectric materials are discussed, thereby guiding researchers in the large-scale application of TENGs.
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Affiliation(s)
- Qingshan Duan
- School of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China
| | - Weiqing Peng
- School of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China
| | - Juanxia He
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
| | - Zhijun Zhang
- School of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China
| | - Zecheng Wu
- School of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China
| | - Ye Zhang
- School of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China
| | - Shuangfei Wang
- School of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China
| | - Shuangxi Nie
- School of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China
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17
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Li J, Yin J, Ramakrishna S, Ji D. Smart Mask as Wearable for Post-Pandemic Personal Healthcare. BIOSENSORS 2023; 13:205. [PMID: 36831971 PMCID: PMC9953568 DOI: 10.3390/bios13020205] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 01/26/2023] [Accepted: 01/27/2023] [Indexed: 06/18/2023]
Abstract
A mask serves as a simple external barrier that protects humans from infectious particles from poor air conditions in the surrounding environment. As an important personal protective equipment (PPE) to protect our respiratory system, masks are able not only to filter pathogens and dust particles but also to sense, reflect or even respond to environmental conditions. This smartness is of particular interest among academia and industries due to its potential in disease detection, health monitoring and caring aspects. In this review, we provide an overlook of the current air filtration strategies used in masks, from structural designs to integrated functional modules that empower the mask's ability to sense and transfer physiological or environmental information to become smart. Specifically, we discussed recent developments in masks designed to detect macroscopic physiological signals from the wearer and mask-based disease diagnoses, such as COVID-19. Further, we propose the concept of next-generation smart masks and the requirements from material selection and function design perspectives that enable masks to interact and play crucial roles in health-caring wearables.
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Affiliation(s)
- Jingcheng Li
- Centre for Nanotechnology and Sustainability, Department of Mechanical Engineering, National University of Singapore, Singapore 117081, Singapore
| | - Jing Yin
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215021, China
| | - Seeram Ramakrishna
- Centre for Nanotechnology and Sustainability, Department of Mechanical Engineering, National University of Singapore, Singapore 117081, Singapore
| | - Dongxiao Ji
- College of Textiles, Donghua University, Shanghai 201620, China
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18
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Self-charging electrostatic face masks leveraging triboelectrification for prolonged air filtration. Nat Commun 2022; 13:7835. [PMID: 36539426 PMCID: PMC9768124 DOI: 10.1038/s41467-022-35521-w] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 12/08/2022] [Indexed: 12/24/2022] Open
Abstract
Electrostatic adsorption is an important complement to the mechanical filtration for high-efficiency air filtering. However, the electrostatic charge decays with time, especially in humid conditions. In this work, a self-charging air filter is presented to capture airborne particles in an efficient and long-lasting manner without the need of external power sources. Leveraging the triboelectric effect between the electrospun poly(vinylidene fluoride) nanofiber film and nylon fabric, the self-charging air filter-based mask excited by breathing can continuously replenish electrostatic charges. As a result, its effective lifespan is up to 60 hours (including 30 hours of wearing), with a minimum filtration efficiency of 95.8% for 0.3-μm particles. The filtration efficiency and lifespan are significantly higher than those of a commercial surgical mask. Furthermore, we uncover the quantitative relation between filtration efficiency and surface electrostatic potential. This work provides an effective strategy to significantly prolong the electrostatic adsorption efficacy for high-performance air-filtering masks.
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19
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Liu Z, Qin L, Liu S, Zhang J, Wu J, Liang X. Superhydrophobic and highly moisture-resistant PVA@EC composite membrane for air purification. RSC Adv 2022; 12:34921-34930. [PMID: 36540249 PMCID: PMC9727828 DOI: 10.1039/d2ra05798k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 10/31/2022] [Indexed: 04/12/2024] Open
Abstract
Electrospun fiber membranes have great potential in the field of air filtration because of their high porosity and small pore size. Conventional air filtration membranes are hydrophilic, leading to weak moisture-barrier properties, which hinders their application in high-humidity environments. In this study, eugenol was added to polyvinyl alcohol and ethyl cellulose (EC) for electrospinning and electrospraying, respectively, of superhydrophobic bilayer composite fiber membranes to efficiently filter particulate matter (PM) in air. Owing to its surface microstructure, electrosprayed EC increased the water contact angle of the PVA membrane from 142.8 to 151.1°. More importantly, the composite air-filter membrane showed a low filtration pressure drop (168.1 Pa) and exhibited high filtration efficiencies of 99.74 and 99.77% for PM1.0 and PM2.5, respectively, and their respective quality factors were 0.0351 and 0.0358 Pa-1. At the same time, the filtration performance of the air filtration membrane remained above 99% at high air humidity. This work reports composite membranes that can effectively capture PM of various sizes and thus may provide a reference for the manufacturing of green air filters for high-humidity environments.
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Affiliation(s)
- Zhiqian Liu
- School of Light Industry and Food Engineering, Guangxi University Nanning 530000 Guangxi P. R. China
| | - Linli Qin
- School of Light Industry and Food Engineering, Guangxi University Nanning 530000 Guangxi P. R. China
| | - Sijia Liu
- School of Light Industry and Food Engineering, Guangxi University Nanning 530000 Guangxi P. R. China
| | - Jing Zhang
- School of Light Industry and Food Engineering, Guangxi University Nanning 530000 Guangxi P. R. China
| | - Junhua Wu
- Guangxi Academy of Sciences Nanning 530000 P. R. China
| | - Xinquan Liang
- School of Light Industry and Food Engineering, Guangxi University Nanning 530000 Guangxi P. R. China
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20
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Shao Z, Chen H, Wang Q, Kang G, Wang X, Li W, Liu Y, Zheng G. High-performance multifunctional electrospun fibrous air filter for personal protection: A review. Sep Purif Technol 2022; 302:122175. [PMID: 36168392 PMCID: PMC9492398 DOI: 10.1016/j.seppur.2022.122175] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 09/13/2022] [Accepted: 09/16/2022] [Indexed: 11/05/2022]
Abstract
With the increasingly serious air pollution and the rampant coronavirus disease 2019 (COVID–19), preparing high–performance air filter to achieve the effective personal protection has become a research hotspot. Electrospun nanofibrous membrane has become the first choice of air filter because of its small diameter, high specific surface area and porosity. However, improving the filtration performance of the filter only cannot meet the personal needs: it should be given more functions based on high filtration performance to maximize the personal benefits, called, multifunctional, which can also be easily realized by electrospinning technology, and has attracted much attention. In this review, the filtration mechanism of high–performance electrospun air filter is innovatively summarized from the perspective of membrane. On this basis, the specific preparation process, advantages and disadvantages are analyzed in detail. Furthermore, other functions required for achieving maximum personal protection benefits are introduced specifically, and the existing high–performance electrospun air filter with multiple functions are summarized. Finally, the challenges, limitations, and development trends of manufacturing high–performance air filter with multiple functions for personal protection are presented.
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Affiliation(s)
- Zungui Shao
- Department of Instrumental and Electrical Engineering, Xiamen University, Xiamen 361102, China
| | - Huatan Chen
- Department of Instrumental and Electrical Engineering, Xiamen University, Xiamen 361102, China
| | - Qingfeng Wang
- Department of Instrumental and Electrical Engineering, Xiamen University, Xiamen 361102, China
| | - Guoyi Kang
- Department of Instrumental and Electrical Engineering, Xiamen University, Xiamen 361102, China
| | - Xiang Wang
- School of Mechanical and Automotive Engineering, Xiamen University of Technology, Xiamen 361024, China
| | - Wenwang Li
- School of Mechanical and Automotive Engineering, Xiamen University of Technology, Xiamen 361024, China
| | - Yifang Liu
- Department of Instrumental and Electrical Engineering, Xiamen University, Xiamen 361102, China
| | - Gaofeng Zheng
- Department of Instrumental and Electrical Engineering, Xiamen University, Xiamen 361102, China
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21
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Huang R, Dai Y, Ahmed J, Edirisinghe M. Facile One-Step Synthesis of PVDF Bead-on-String Fibers by Pressurized Gyration for Reusable Face Masks. Polymers (Basel) 2022; 14:4498. [PMID: 36365492 PMCID: PMC9654049 DOI: 10.3390/polym14214498] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 10/12/2022] [Accepted: 10/20/2022] [Indexed: 08/10/2023] Open
Abstract
Single-use face masks pose a threat to the environment and are not cost-effective, which prompts the need for developing reusable masks. In this study, pressurized gyration (PG) successfully produced bead-on-string polyvinylidene fluoride (PVDF) fibers with fiber diameters ranging from 2.3 μm to 26.1 μm, and bead diameters ranging from 60.9 μm to 88.5 μm by changing the solution parameters. The effect of the solution parameters on the crystalline phase was studied by Fourier-transform infrared spectroscopy (FT-IR), where the β-phase contents of PG PVDF fibers reached over 75%. The fiber morphology and β-phase contents of PG PVDF fibers indicated the potential mechanical and electrostatic filtration efficiency of PG PVDF fibers, respectively. Additionally, the hydrophobicity was investigated by static water contact angle tests, and the PVDF fibers showed superior hydrophobicity properties (all samples above 125°) over commercial polypropylene (PP) single-use masks (approximately 107°). This study supports the notion that the PG PVDF fiber mats are a promising candidate for future reusable face masks.
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22
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Jeon SH, Lee Y, Biswas S, Choi H, Han S, Kim M, Lee DW, Lee S, Kim H, Bae JH. Washable Fabric Triboelectric Nanogenerators for Potential Application in Face Masks. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:nano12183152. [PMID: 36144940 PMCID: PMC9503916 DOI: 10.3390/nano12183152] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 09/01/2022] [Accepted: 09/07/2022] [Indexed: 05/28/2023]
Abstract
In order to counteract the COVID-19 pandemic by wearing face masks, we examine washable fabric-based triboelectric nanogenerators (FTENGs). We applied the flash-spun nonwoven fabric (FS fabric) into the FTENGs, comparing the melt-blown nonwoven fabric (MB fabric) based FTENGs, which is conventionally studied in the field of energy harvesting. For reusability, all our proposed FTENGs are systematically investigated by controlling the washing conditions. After washing, the degradation ratio of the obtained output voltage is found to be only 12.5% for FS FTENGs, compared to the ratio of about 50% for the typical MB FTENGs. A rather small degradation ratio for FS fabric cases has resulted from less changed fabric structure after washing due to more dense fabric nature. Additionally, in order to improve the electrical characteristics of FS FTENGs. Note that the output voltage of FTENGs exhibits as much as 600 V.
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Affiliation(s)
- Sang-Hwa Jeon
- School of Electronic and Electrical Engineering, Kyungpook National University, Daegu 41566, Korea
| | - Yongju Lee
- School of Electrical and Computer Engineering, Center for Smart Sensor System of Seoul (CS4), University of Seoul, Seoul 02504, Korea
| | - Swarup Biswas
- School of Electrical and Computer Engineering, Center for Smart Sensor System of Seoul (CS4), University of Seoul, Seoul 02504, Korea
| | - Hyojeong Choi
- School of Electrical and Computer Engineering, Center for Smart Sensor System of Seoul (CS4), University of Seoul, Seoul 02504, Korea
| | - Selim Han
- School of Electrical and Computer Engineering, Center for Smart Sensor System of Seoul (CS4), University of Seoul, Seoul 02504, Korea
- AI Robot R&D Department, Korea Institute of Industrial Technology (KITECH), Ansan 15588, Korea
| | - Minseo Kim
- School of Chemical Engineering, Pusan National University, Busan 56241, Korea
| | - Dong-Wook Lee
- AI Robot R&D Department, Korea Institute of Industrial Technology (KITECH), Ansan 15588, Korea
| | - Sohee Lee
- Department of Clothing and Textiles, Research Institute of Natural Science, Gyeongsang National University, Jinju 52828, Korea
| | - Hyeok Kim
- School of Electrical and Computer Engineering, Center for Smart Sensor System of Seoul (CS4), University of Seoul, Seoul 02504, Korea
| | - Jin-Hyuk Bae
- School of Electronic and Electrical Engineering, Kyungpook National University, Daegu 41566, Korea
- School of Electronics Engineering, Kyungpook National University, Daegu 41566, Korea
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23
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Yao X, Liu Y, Chu Z, Jin W. Membranes for the life sciences and their future roles in medicine. Chin J Chem Eng 2022; 49:1-20. [PMID: 35755178 PMCID: PMC9212902 DOI: 10.1016/j.cjche.2022.04.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 04/15/2022] [Accepted: 04/15/2022] [Indexed: 01/12/2023]
Abstract
Since the global outbreak of COVID-19, membrane technology for clinical treatments, including extracorporeal membrane oxygenation (ECMO) and protective masks and clothing, has attracted intense research attention for its irreplaceable abilities. Membrane research and applications are now playing an increasingly important role in various fields of life science. In addition to intrinsic properties such as size sieving, dissolution and diffusion, membranes are often endowed with additional functions as cell scaffolds, catalysts or sensors to satisfy the specific requirements of different clinical applications. In this review, we will introduce and discuss state-of-the-art membranes and their respective functions in four typical areas of life science: artificial organs, tissue engineering, in vitro blood diagnosis and medical support. Emphasis will be given to the description of certain specific functions required of membranes in each field to provide guidance for the selection and fabrication of the membrane material. The advantages and disadvantages of these membranes have been compared to indicate further development directions for different clinical applications. Finally, we propose challenges and outlooks for future development.
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Affiliation(s)
- Xiaoyue Yao
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yu Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Zhenyu Chu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Wanqin Jin
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
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24
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Zhang X, Liu J, Liu X, Liu C, Chen Q. HEPA filters for airliner cabins: State of the art and future development. INDOOR AIR 2022; 32:e13103. [PMID: 36168223 DOI: 10.1111/ina.13103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/18/2022] [Accepted: 08/15/2022] [Indexed: 06/16/2023]
Abstract
The airliner cabin environment is very important to the health of passengers and crew members, and the use of high-efficiency particulate air (HEPA) filters for recirculated air in the environmental control systems (ECS) is essential for the removal of airborne particles such as SARS CoV-2 aerosols. A HEPA filter should be high efficiency, low-pressure drop, high dust-holding capacity (DHC), lightweight, and strong for use in aircraft. We conducted an experimental study on 23 HEPA filters with glass fiber media that are used in different commercial airliner models. The tested filters had a median filtration efficiency of >99.97% for particles with a diameter of 0.3-0.5 μm, a pressure drop of 134-412 Pa at rated airflow rate, and a DHC of 32.2-37.0 g/m2 . The use of nanofiber media instead of glass fiber media can reduce the pressure drop by 66.4%-94.3% and significantly increase the quality factor by analysis of literature data. The disadvantages of poor fire resistance and small DHC can be overcome by the use of flame-retardant polymers and fiber structural design. As a new lightweight and environmentally friendly filter material, nanofiber media could be used as air filters in ECS in the future.
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Affiliation(s)
- Xin Zhang
- Tianjin Key Lab of Indoor Air Environmental Quality Control, School of Environmental Science and Engineering, Tianjin University, Tianjin, China
| | - Junjie Liu
- Tianjin Key Lab of Indoor Air Environmental Quality Control, School of Environmental Science and Engineering, Tianjin University, Tianjin, China
| | - Xuan Liu
- China Railway Design Corporation, Tianjin, China
| | - Chaojun Liu
- Tianjin Key Lab of Indoor Air Environmental Quality Control, School of Environmental Science and Engineering, Tianjin University, Tianjin, China
- Zhejiang Goldensea Environment Technology Co. Ltd., Zhejiang, China
| | - Qingyan Chen
- Department of Building Environment and Energy Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong
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25
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Pu X, Zhang C, Wang ZL. Triboelectric nanogenerators as wearable power sources and self-powered sensors. Natl Sci Rev 2022; 10:nwac170. [PMID: 36684511 PMCID: PMC9843157 DOI: 10.1093/nsr/nwac170] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 07/19/2022] [Accepted: 07/26/2022] [Indexed: 01/25/2023] Open
Abstract
Smart wearable technologies are augmenting human bodies beyond our biological capabilities in communication, healthcare and recreation. Energy supply and information acquisition are essential for wearable electronics, whereas the increasing demands in multifunction are raising the requirements for energy and sensor devices. The triboelectric nanogenerator (TENG), proven to be able to convert various mechanical energies into electricity, can fulfill either of these two functions and therefore has drawn extensive attention and research efforts worldwide. The everyday life of a human body produces considerable mechanical energies and, in the meantime, the human body communicates mainly through mechanical signals, such as sound, body gestures and muscle movements. Therefore, the TENG has been intensively studied to serve as either wearable sources or wearable self-powered sensors. Herein, the recent finding on the fundamental understanding of TENGs is revisited briefly, followed by a summary of recent advancements in TENG-based wearable power sources and self-powered sensors. The challenges and prospects of this area are given as well.
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26
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Shen H, Han M, Shen Y, Shuai D. Electrospun Nanofibrous Membranes for Controlling Airborne Viruses: Present Status, Standardization of Aerosol Filtration Tests, and Future Development. ACS ENVIRONMENTAL AU 2022; 2:290-309. [PMID: 35928556 PMCID: PMC9342653 DOI: 10.1021/acsenvironau.1c00047] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The global COVID-19 pandemic has raised great public concern about the airborne transmission of viral pathogens. Virus-laden aerosols with small size could be suspended in the air for a long duration and remain infectious. Among a series of measures implemented to mitigate the airborne spread of infectious diseases, filtration by face masks, respirators, and air filters is a potent nonpharmacologic intervention. Compared with conventional air filtration media, nanofibrous membranes fabricated via electrospinning are promising candidates for controlling airborne viruses due to their desired characteristics, i.e., a reduced pore size (submicrometers to several micrometers), a larger specific surface area and porosity, and retained surface and volume charges. So far, a wide variety of electrospun nanofibrous membranes have been developed for aerosol filtration, and they have shown excellent filtration performance. However, current studies using electrospinning for controlling airborne viruses vary significantly in the practice of aerosol filtration tests, including setup configurations and operations. The discrepancy among various studies makes it difficult, if not impossible, to compare filtration performance. Therefore, there is a pressing need to establish a standardized protocol for evaluating the electrospun nanofibrous membranes' performance for removing viral aerosols. In this perspective, we first reviewed the properties and performance of diverse filter media, including electrospun nanofibrous membranes, for removing viral aerosols. Next, aerosol filtration protocols for electrospun nanofibrous membranes were discussed with respect to the aerosol generation, filtration, collection, and detection. Thereafter, standardizing the aerosol filtration test system for electrospun nanofibrous membranes was proposed. In the end, the future advancement of electrospun nanofibrous membranes for enhanced air filtration was discussed. This perspective provides a comprehensive understanding of status and challenges of electrospinning for air filtration, and it sheds light on future nanomaterial and protocol development for controlling airborne viruses, preventing the spread of infectious diseases, and beyond.
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Affiliation(s)
- Hongchen Shen
- Department
of Civil and Environmental Engineering, The George Washington University, Washington, DC 20052, United States
| | - Minghao Han
- Department
of Chemical and Environmental Engineering, University of California, Riverside, Riverside, California 92521, United States
| | - Yun Shen
- Department
of Chemical and Environmental Engineering, University of California, Riverside, Riverside, California 92521, United States
| | - Danmeng Shuai
- Department
of Civil and Environmental Engineering, The George Washington University, Washington, DC 20052, United States
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Wu S, Dong T, Li Y, Sun M, Qi Y, Liu J, Kuss MA, Chen S, Duan B. State-of-the-art review of advanced electrospun nanofiber yarn-based textiles for biomedical applications. APPLIED MATERIALS TODAY 2022; 27:101473. [PMID: 35434263 PMCID: PMC8994858 DOI: 10.1016/j.apmt.2022.101473] [Citation(s) in RCA: 48] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 03/23/2022] [Accepted: 03/31/2022] [Indexed: 05/02/2023]
Abstract
The pandemic of the coronavirus disease 2019 (COVID-19) has made biotextiles, including face masks and protective clothing, quite familiar in our daily lives. Biotextiles are one broad category of textile products that are beyond our imagination. Currently, biotextiles have been routinely utilized in various biomedical fields, like daily protection, wound healing, tissue regeneration, drug delivery, and sensing, to improve the health and medical conditions of individuals. However, these biotextiles are commonly manufactured with fibers with diameters on the micrometer scale (> 10 μm). Recently, nanofibrous materials have aroused extensive attention in the fields of fiber science and textile engineering because the fibers with nanoscale diameters exhibited obviously superior performances, such as size and surface/interface effects as well as optical, electrical, mechanical, and biological properties, compared to microfibers. A combination of innovative electrospinning techniques and traditional textile-forming strategies opens a new window for the generation of nanofibrous biotextiles to renew and update traditional microfibrous biotextiles. In the last two decades, the conventional electrospinning device has been widely modified to generate nanofiber yarns (NYs) with the fiber diameters less than 1000 nm. The electrospun NYs can be further employed as the primary processing unit for manufacturing a new generation of nano-textiles using various textile-forming strategies. In this review, starting from the basic information of conventional electrospinning techniques, we summarize the innovative electrospinning strategies for NY fabrication and critically discuss their advantages and limitations. This review further covers the progress in the construction of electrospun NY-based nanotextiles and their recent applications in biomedical fields, mainly including surgical sutures, various scaffolds and implants for tissue engineering, smart wearable bioelectronics, and their current and potential applications in the COVID-19 pandemic. At the end, this review highlights and identifies the future needs and opportunities of electrospun NYs and NY-based nanotextiles for clinical use.
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Key Words
- CNT, carbon nanotube
- COVID-19, coronavirus disease 2019
- ECM, extracellular matrix
- Electrospinning
- FDA, food and drug administration
- GF, gauge factor
- GO, graphene oxide
- HAVIC, human aortic valve interstitial cell
- HAp, hydroxyapatite
- MSC, mesenchymal stem cell
- MSC-SC, MSC derived Schwann cell-like cell
- MWCNT, multiwalled carbon nanotube
- MY, microfiber yarn
- MeGel, methacrylated gelatin
- NGC, nerve guidance conduit
- NHMR, neutral hollow metal rod
- NMD, neutral metal disc
- NY, nanofiber yarn
- Nanoyarns
- PA6, polyamide 6
- PA66, polyamide 66
- PAN, polyacrylonitrile
- PANi, polyaniline
- PCL, polycaprolactone
- PEO, polyethylene oxide
- PGA, polyglycolide
- PHBV, poly(3-hydroxybutyrate-co-3-hydroxyvalerate)
- PLCL, poly(L-lactide-co-ε-caprolactone)
- PLGA, poly(lactic-co-glycolic acid)
- PLLA, poly(L-lactic acid)
- PMIA, poly(m-phenylene isophthalamide)
- PPDO, polydioxanone
- PPy, polypyrrole
- PSA, poly(sulfone amide)
- PU, polyurethane
- PVA, poly(vinyl alcohol)
- PVAc, poly(vinyl acetate)
- PVDF, poly(vinylidene difluoride)
- PVDF-HFP, poly(vinylidene floride-co-hexafluoropropylene)
- PVDF-TrFE, poly(vinylidene fluoride trifluoroethylene)
- PVP, poly(vinyl pyrrolidone)
- SARS-CoV-2, severe acute respiratory syndrome coronavirus 2
- SC, Schwann cell
- SF, silk fibroin
- SWCNT, single-walled carbon nanotube
- TGF-β1, transforming growth factor-β1
- Textile-forming technique
- Tissue scaffolds
- VEGF, vascular endothelial growth factor
- Wearable bioelectronics
- bFGF, basic fibroblast growth factor
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Affiliation(s)
- Shaohua Wu
- College of Textiles & Clothing, Qingdao University, Qingdao, China
| | - Ting Dong
- College of Textiles & Clothing, Qingdao University, Qingdao, China
| | - Yiran Li
- College of Textiles & Clothing, Qingdao University, Qingdao, China
| | - Mingchao Sun
- College of Textiles & Clothing, Qingdao University, Qingdao, China
| | - Ye Qi
- College of Textiles & Clothing, Qingdao University, Qingdao, China
| | - Jiao Liu
- College of Textiles & Clothing, Qingdao University, Qingdao, China
| | - Mitchell A Kuss
- Mary & Dick Holland Regenerative Medicine Program and Division of Cardiology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
- Department of Surgery, College of Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Shaojuan Chen
- College of Textiles & Clothing, Qingdao University, Qingdao, China
| | - Bin Duan
- Mary & Dick Holland Regenerative Medicine Program and Division of Cardiology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
- Department of Surgery, College of Medicine, University of Nebraska Medical Center, Omaha, NE, USA
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28
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Dual-Structure PVDF/SDS Nanofibrous Membranes for Highly Efficient Personal Protection in Mines. MEMBRANES 2022; 12:membranes12050482. [PMID: 35629808 PMCID: PMC9144173 DOI: 10.3390/membranes12050482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 04/03/2022] [Accepted: 04/23/2022] [Indexed: 12/04/2022]
Abstract
Pneumoconiosis in miners is considered a global problem. Improving the performance of individual protective materials can effectively reduce the incidence of pneumoconiosis. In this study, the blend membrane of sodium dodecyl sulfate and polyvinylidene fluoride with a dual structure was prepared using electrospinning techniques, and the morphological structure, fiber diameter, and filtration performance of the nanofiber membranes were optimized by adjusting the PVDF concentration and SDS content. The results show that the incorporation of SDS enabled the nanofiber membranes to show tree-like and beaded fibers. Compared with the original PVDF membrane, the small content of tree-like fibers and beaded fibers can improve the filtration efficiency and reduce the resistance of the fiber membrane. The prepared nanofiber membrane has excellent comprehensive filtration performance, and the quality factor is 0.042 pa−1 when the concentration of PVDF is 10 wt% and the addition of SDS is 0.1 wt%. Furthermore, after high-temperature treatment, the membrane could still maintain good filtration performance. The PVDF/SDS blend nanofiber membrane has outstanding filtration efficiency and good thermal stability and can fully meet the personal protection of miners in underground high-temperature operation environments.
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29
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Liu B, Libanori A, Zhou Y, Xiao X, Xie G, Zhao X, Su Y, Wang S, Yuan Z, Duan Z, Liang J, Jiang Y, Tai H, Chen J. Simultaneous Biomechanical and Biochemical Monitoring for Self-Powered Breath Analysis. ACS APPLIED MATERIALS & INTERFACES 2022; 14:7301-7310. [PMID: 35076218 DOI: 10.1021/acsami.1c22457] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The high moisture level of exhaled gases unavoidably limits the sensitivity of breath analysis via wearable bioelectronics. Inspired by pulmonary lobe expansion/contraction observed during respiration, a respiration-driven triboelectric sensor (RTS) was devised for simultaneous respiratory biomechanical monitoring and exhaled acetone concentration analysis. A tin oxide-doped polyethyleneimine membrane was devised to play a dual role as both a triboelectric layer and an acetone sensing material. The prepared RTS exhibited excellent ability in measuring respiratory flow rate (2-8 L/min) and breath frequency (0.33-0.8 Hz). Furthermore, the RTS presented good performance in biochemical acetone sensing (2-10 ppm range at high moisture levels), which was validated via finite element analysis. This work has led to the development of a novel real-time active respiratory monitoring system and strengthened triboelectric-chemisorption coupling sensing mechanism.
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Affiliation(s)
- Bohao Liu
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China
| | - Alberto Libanori
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Yihao Zhou
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Xiao Xiao
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Guangzhong Xie
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China
| | - Xun Zhao
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Yuanjie Su
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China
| | - Si Wang
- Institute of Optoelectronic Technology, Chinese Academy of Sciences, Chengdu 610209, P. R. China
| | - Zhen Yuan
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China
| | - Zaihua Duan
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China
| | - Junge Liang
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China
| | - Yadong Jiang
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China
| | - Huiling Tai
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China
| | - Jun Chen
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California 90095, United States
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30
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Wang H, Wu Y, Wang J. Triboelectric charging of melt-blown nonwoven filters with high filtration efficiency. Sci Rep 2022; 12:1146. [PMID: 35064160 PMCID: PMC8782902 DOI: 10.1038/s41598-022-04838-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Accepted: 01/03/2022] [Indexed: 11/08/2022] Open
Abstract
As a novel technology to convert low-frequency energy into electric power, the triboelectric nanogenerator is a hot research topic recently. However, the nature of charge carriers and their transfer mechanisms still remain poorly understood, especially for the cases of liquid-solid triboelectric nanogenerator. In this paper, charges produced by a triboelectric charging process were designed to provide melt-blown nonwoven fabrics with high filtration efficiency by making full use of the electrostatic attraction filtration mechanism. Influences of water conductivity and drying temperature on the filtration efficiency of melt-blown nonwoven fabrics were investigated. And the corresponding properties such as the surface charge potential and charge stability were analyzed by using the electrostatic voltmeter, bio atomic force microscope and thermally stimulated discharge technique. In addition, metal and inorganic elements in the masterbatch and water before and after triboelectric charging were measured in order to uncover the charge transfer mechanism. Melt-blown nonwoven fabrics with filtration efficiency as high as 96.8% was obtained through the triboelectric charging treatment by using water with the conductivity as low as 1.1 μS/cm for the first time. Negative and positive surface charge density appeared randomly on both sides of melt-blown nonwoven fabrics after the triboelectric charging treatment from the bio atomic force microscope measurement while only one kind of surface charge density can be achieved in the research of TENG, that is, negative or positive. It seems there are both electron and ion transfers during the triboelectric charging process and electron transfer seems to have more important contribution for the generation of charges.
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Affiliation(s)
- Hong Wang
- Key Laboratory of Textile Science and Technology, Ministry of Education, Donghua University, No. 2999 North Renmin Road, Songjiang District, Shanghai, 201620, China.
| | - Yanjin Wu
- Key Laboratory of Textile Science and Technology, Ministry of Education, Donghua University, No. 2999 North Renmin Road, Songjiang District, Shanghai, 201620, China
| | - Jiang Wang
- Key Laboratory of Textile Science and Technology, Ministry of Education, Donghua University, No. 2999 North Renmin Road, Songjiang District, Shanghai, 201620, China
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31
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Deng W, Sun Y, Yao X, Subramanian K, Ling C, Wang H, Chopra SS, Xu BB, Wang J, Chen J, Wang D, Amancio H, Pramana S, Ye R, Wang S. Masks for COVID-19. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2102189. [PMID: 34825783 PMCID: PMC8787406 DOI: 10.1002/advs.202102189] [Citation(s) in RCA: 61] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 07/18/2021] [Indexed: 05/08/2023]
Abstract
Sustainable solutions on fabricating and using a face mask to block the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) spread during this coronavirus pandemic of 2019 (COVID-19) are required as society is directed by the World Health Organization (WHO) toward wearing it, resulting in an increasingly huge demand with over 4 000 000 000 masks used per day globally. Herein, various new mask technologies and advanced materials are reviewed to deal with critical shortages, cross-infection, and secondary transmission risk of masks. A number of countries have used cloth masks and 3D-printed masks as substitutes, whose filtration efficiencies can be improved by using nanofibers or mixing other polymers into them. Since 2020, researchers continue to improve the performance of masks by adding various functionalities, for example using metal nanoparticles and herbal extracts to inactivate pathogens, using graphene to make masks photothermal and superhydrophobic, and using triboelectric nanogenerator (TENG) to prolong mask lifetime. The recent advances in material technology have led to the development of antimicrobial coatings, which are introduced in this review. When incorporated into masks, these advanced materials and technologies can aid in the prevention of secondary transmission of the virus.
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Affiliation(s)
- Wei Deng
- Department of Mechanical EngineeringCity University of Hong KongHong Kong999077China
| | - Yajun Sun
- Department of Mechanical EngineeringCity University of Hong KongHong Kong999077China
| | - Xiaoxue Yao
- Department of Mechanical EngineeringCity University of Hong KongHong Kong999077China
| | - Karpagam Subramanian
- School of Energy and EnvironmentCity University of Hong KongHong Kong999077China
| | - Chen Ling
- Department of Mechanical EngineeringCity University of Hong KongHong Kong999077China
| | - Hongbo Wang
- Department of Mechanical EngineeringCity University of Hong KongHong Kong999077China
| | - Shauhrat S. Chopra
- School of Energy and EnvironmentCity University of Hong KongHong Kong999077China
| | - Ben Bin Xu
- Department of Mechanical and Construction EngineeringNorthumbria UniversityNewcastle upon TyneNE1 8STUK
| | - Jie‐Xin Wang
- State Key Laboratory of Organic Inorganic CompositesBeijing University of Chemical TechnologyBeijing100029China
| | - Jian‐Feng Chen
- State Key Laboratory of Organic Inorganic CompositesBeijing University of Chemical TechnologyBeijing100029China
| | - Dan Wang
- State Key Laboratory of Organic Inorganic CompositesBeijing University of Chemical TechnologyBeijing100029China
| | - Honeyfer Amancio
- Department of Chemical Engineering and BiotechnologyCambridge UniversityCambridgeCB2 1TNUK
| | - Stevin Pramana
- School of EngineeringNewcastle UniversityNewcastle upon TyneNE1 7RUUK
| | - Ruquan Ye
- Department of ChemistryCity University of Hong KongHong Kong999077China
| | - Steven Wang
- Department of Mechanical EngineeringCity University of Hong KongHong Kong999077China
- School of Energy and EnvironmentCity University of Hong KongHong Kong999077China
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32
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Shi J, Li H, Xu F, Tao X. Materials in advanced design of personal protective equipment: a review. MATERIALS TODAY. ADVANCES 2021; 12:100171. [PMID: 34514364 PMCID: PMC8423993 DOI: 10.1016/j.mtadv.2021.100171] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Revised: 08/26/2021] [Accepted: 09/02/2021] [Indexed: 05/13/2023]
Abstract
The outbreak of the Covid-19 pandemic has aroused tremendous attention toward personal protective equipment (PPE) in both scientific research and industrial manufacture. Despite decades of development in PPE design and fabrication, there's still much room for further optimization, in terms, of both protection performance and wear comfort. Interdisciplinary efforts have been devoted to this research field in recent years. Significantly, the innovation of materials, which brings about improved performance and versatile new functions for PPEs, has been widely adopted in PPE design. In this minireview, recent progress in the development of novel materials and structural designs for PPE application are presented in detail with the introduction of various material-based strategies for different PPE types, as well as the examples, which apply auxiliary components into face masks to enrich the functionalities and improve the personal feelings in the pandemic period.
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Affiliation(s)
- J Shi
- College of Engineering Physics, Shenzhen Technology University, 518118, Shenzhen, China
| | - H Li
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - F Xu
- College of Engineering Physics, Shenzhen Technology University, 518118, Shenzhen, China
| | - X Tao
- Research Center for Smart Wearable Technology, Institute of Textiles and Clothing, The Hong Kong Polytechnic University, 999077, Hong Kong, China
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33
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Li R, Zhang M, Wu Y, Tang P, Sun G, Wang L, Mandal S, Wang L, Lang J, Passalacqua A, Subramaniam S, Song G. What We Are Learning from COVID-19 for Respiratory Protection: Contemporary and Emerging Issues. Polymers (Basel) 2021; 13:4165. [PMID: 34883668 PMCID: PMC8659889 DOI: 10.3390/polym13234165] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 11/23/2021] [Accepted: 11/24/2021] [Indexed: 02/07/2023] Open
Abstract
Infectious respiratory diseases such as the current COVID-19 have caused public health crises and interfered with social activity. Given the complexity of these novel infectious diseases, their dynamic nature, along with rapid changes in social and occupational environments, technology, and means of interpersonal interaction, respiratory protective devices (RPDs) play a crucial role in controlling infection, particularly for viruses like SARS-CoV-2 that have a high transmission rate, strong viability, multiple infection routes and mechanisms, and emerging new variants that could reduce the efficacy of existing vaccines. Evidence of asymptomatic and pre-symptomatic transmissions further highlights the importance of a universal adoption of RPDs. RPDs have substantially improved over the past 100 years due to advances in technology, materials, and medical knowledge. However, several issues still need to be addressed such as engineering performance, comfort, testing standards, compliance monitoring, and regulations, especially considering the recent emergence of pathogens with novel transmission characteristics. In this review, we summarize existing knowledge and understanding on respiratory infectious diseases and their protection, discuss the emerging issues that influence the resulting protective and comfort performance of the RPDs, and provide insights in the identified knowledge gaps and future directions with diverse perspectives.
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Affiliation(s)
- Rui Li
- Department of Apparel, Events, and Hospitality Management, Iowa State University, Ames, IA 50010, USA; (R.L.); (M.Z.); (Y.W.); (L.W.)
| | - Mengying Zhang
- Department of Apparel, Events, and Hospitality Management, Iowa State University, Ames, IA 50010, USA; (R.L.); (M.Z.); (Y.W.); (L.W.)
| | - Yulin Wu
- Department of Apparel, Events, and Hospitality Management, Iowa State University, Ames, IA 50010, USA; (R.L.); (M.Z.); (Y.W.); (L.W.)
| | - Peixin Tang
- Department of Biological and Agricultural Engineering, University of California, Davis, CA 95616, USA; (P.T.); (G.S.)
| | - Gang Sun
- Department of Biological and Agricultural Engineering, University of California, Davis, CA 95616, USA; (P.T.); (G.S.)
| | - Liwen Wang
- Department of Apparel, Events, and Hospitality Management, Iowa State University, Ames, IA 50010, USA; (R.L.); (M.Z.); (Y.W.); (L.W.)
| | - Sumit Mandal
- Department of Design, Housing and Merchandising, Oklahoma State University, Stillwater, OK 74078, USA;
| | - Lizhi Wang
- Department of Industrial and Manufacturing Systems Engineering, Iowa State University, Ames, IA 50010, USA;
| | - James Lang
- Department of Kinesiology, Iowa State University, Ames, IA 50010, USA;
| | - Alberto Passalacqua
- Department of Mechanical Engineering, Iowa State University, Ames, IA 50010, USA; (A.P.); (S.S.)
| | - Shankar Subramaniam
- Department of Mechanical Engineering, Iowa State University, Ames, IA 50010, USA; (A.P.); (S.S.)
| | - Guowen Song
- Department of Apparel, Events, and Hospitality Management, Iowa State University, Ames, IA 50010, USA; (R.L.); (M.Z.); (Y.W.); (L.W.)
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Hu Z, Wang J, Wang Y, Wang C, Wang Y, Zhang Z, Xu P, Zhao T, Luan Y, Liu C, Qiao L, Shu M, Mi J, Pan X, Xu M. A Robust and Wearable Triboelectric Tactile Patch as Intelligent Human-Machine Interface. MATERIALS (BASEL, SWITZERLAND) 2021; 14:6366. [PMID: 34771892 PMCID: PMC8585222 DOI: 10.3390/ma14216366] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 10/21/2021] [Accepted: 10/21/2021] [Indexed: 01/12/2023]
Abstract
The human-machine interface plays an important role in the diversified interactions between humans and machines, especially by swaping information exchange between human and machine operations. Considering the high wearable compatibility and self-powered capability, triboelectric-based interfaces have attracted increasing attention. Herein, this work developed a minimalist and stable interacting patch with the function of sensing and robot controlling based on triboelectric nanogenerator. This robust and wearable patch is composed of several flexible materials, namely polytetrafluoroethylene (PTFE), nylon, hydrogels electrode, and silicone rubber substrate. A signal-processing circuit was used in this patch to convert the sensor signal into a more stable signal (the deviation within 0.1 V), which provides a more effective method for sensing and robot control in a wireless way. Thus, the device can be used to control the movement of robots in real-time and exhibits a good stable performance. A specific algorithm was used in this patch to convert the 1D serial number into a 2D coordinate system, so that the click of the finger can be converted into a sliding track, so as to achieve the trajectory generation of a robot in a wireless way. It is believed that the device-based human-machine interaction with minimalist design has great potential in applications for contact perception, 2D control, robotics, and wearable electronics.
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Affiliation(s)
- Zhiyuan Hu
- Dalian Key Laboratory of Marine Micro/Nano Energy and Self-Powered Systems, Marine Engineering College, Dalian Maritime University, Dalian 116026, China; (Z.H.); (J.W.); (Y.W.); (C.W.); (Y.W.); (Z.Z.); (P.X.); (Y.L.); (C.L.)
| | - Junpeng Wang
- Dalian Key Laboratory of Marine Micro/Nano Energy and Self-Powered Systems, Marine Engineering College, Dalian Maritime University, Dalian 116026, China; (Z.H.); (J.W.); (Y.W.); (C.W.); (Y.W.); (Z.Z.); (P.X.); (Y.L.); (C.L.)
| | - Yan Wang
- Dalian Key Laboratory of Marine Micro/Nano Energy and Self-Powered Systems, Marine Engineering College, Dalian Maritime University, Dalian 116026, China; (Z.H.); (J.W.); (Y.W.); (C.W.); (Y.W.); (Z.Z.); (P.X.); (Y.L.); (C.L.)
- Center for Intelligent Sensors and MEMS (CISM), National University of Singapore, Singapore 117576, Singapore
| | - Chuan Wang
- Dalian Key Laboratory of Marine Micro/Nano Energy and Self-Powered Systems, Marine Engineering College, Dalian Maritime University, Dalian 116026, China; (Z.H.); (J.W.); (Y.W.); (C.W.); (Y.W.); (Z.Z.); (P.X.); (Y.L.); (C.L.)
| | - Yawei Wang
- Dalian Key Laboratory of Marine Micro/Nano Energy and Self-Powered Systems, Marine Engineering College, Dalian Maritime University, Dalian 116026, China; (Z.H.); (J.W.); (Y.W.); (C.W.); (Y.W.); (Z.Z.); (P.X.); (Y.L.); (C.L.)
| | - Ziyi Zhang
- Dalian Key Laboratory of Marine Micro/Nano Energy and Self-Powered Systems, Marine Engineering College, Dalian Maritime University, Dalian 116026, China; (Z.H.); (J.W.); (Y.W.); (C.W.); (Y.W.); (Z.Z.); (P.X.); (Y.L.); (C.L.)
| | - Peng Xu
- Dalian Key Laboratory of Marine Micro/Nano Energy and Self-Powered Systems, Marine Engineering College, Dalian Maritime University, Dalian 116026, China; (Z.H.); (J.W.); (Y.W.); (C.W.); (Y.W.); (Z.Z.); (P.X.); (Y.L.); (C.L.)
| | - Tiancong Zhao
- School of Marine Engineering and Technology, Sun Yat-sen University, Guangzhou 510275, China;
| | - Yu Luan
- Dalian Key Laboratory of Marine Micro/Nano Energy and Self-Powered Systems, Marine Engineering College, Dalian Maritime University, Dalian 116026, China; (Z.H.); (J.W.); (Y.W.); (C.W.); (Y.W.); (Z.Z.); (P.X.); (Y.L.); (C.L.)
| | - Chang Liu
- Dalian Key Laboratory of Marine Micro/Nano Energy and Self-Powered Systems, Marine Engineering College, Dalian Maritime University, Dalian 116026, China; (Z.H.); (J.W.); (Y.W.); (C.W.); (Y.W.); (Z.Z.); (P.X.); (Y.L.); (C.L.)
| | - Lin Qiao
- Navigation College, Dalian Maritime University, Dalian 116026, China;
| | - Mingrui Shu
- Institute for Ocean Engineering, Tsinghua Shenzhen International Graduate School, Shenzhen 518000, China;
| | - Jianchun Mi
- College of Engineering, Peking University, Beijing 100871, China;
| | - Xinxiang Pan
- School of Electronics and Information Technology, Guangdong Ocean University, Zhanjiang 524088, China;
| | - Minyi Xu
- Dalian Key Laboratory of Marine Micro/Nano Energy and Self-Powered Systems, Marine Engineering College, Dalian Maritime University, Dalian 116026, China; (Z.H.); (J.W.); (Y.W.); (C.W.); (Y.W.); (Z.Z.); (P.X.); (Y.L.); (C.L.)
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Fine S, He P, Huang J. Self-Charging Textile Woven from Dissimilar Household Fibers for Air Filtration: A Proof of Concept. ACS OMEGA 2021; 6:26311-26317. [PMID: 34660990 PMCID: PMC8515584 DOI: 10.1021/acsomega.1c03412] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 09/21/2021] [Indexed: 06/13/2023]
Abstract
A proof of concept is demonstrated concerning self-charging fabrics for air filtration purposes based on common household fibers. Triboelectrically dissimilar fibers, such as wool and polyester, were interwoven into a single-layer fabric, so that local charges can be developed and partially retained at the junctions of the insulating fibers as a result of their constant frictional contact. Voluminous fibers that are typically used for knitting were chosen here, leveraging their broad availability and ease of use, so that they can be handwoven into a leak-free fabric, preventing unfiltered air to pass through directly. When tested for PM2.5 and PM10 removal, this hybrid fabric outperforms a single-material fabric made similarly from household cotton yarns. And its pressure drop and filtration efficiency were found to be in between those of a common surgical mask and a KN95 mask.
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Affiliation(s)
- Simona
G. Fine
- Department of Materials Science
and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Pan He
- Department of Materials Science
and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Jiaxing Huang
- Department of Materials Science
and Engineering, Northwestern University, Evanston, Illinois 60208, United States
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Self-Supporting Three-Dimensional Electrospun Nanofibrous Membrane for Highly Efficient Air Filtration. NANOMATERIALS 2021; 11:nano11102567. [PMID: 34685007 PMCID: PMC8540260 DOI: 10.3390/nano11102567] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 09/23/2021] [Accepted: 09/25/2021] [Indexed: 12/12/2022]
Abstract
High-performance air filtration was the key to health protection from biological and ultrafine dust pollution. A self-supporting, three-dimensional (3D) nanofibrous membrane with curled pattern was electrospun for the filtration, of which the micro-fluffy structure displayed high-filtration efficiency and low-pressure drop. The flow field in the 3D filtration membrane was simulated to optimize the process parameters to increase the filtration performance. The qualification factor increased from 0.0274 Pa−1 to 0.0309 Pa−1 by 12.77% after the optimization of the electrospinning parameters. The best filtration efficiency and pressure drop were 93.6% and 89.0 Pa, separately. This work provides a new strategy to fabricate 3D structures through the construction of fiber morphology and promotes further improvement of air filtration performance of fibrous filters.
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Ghaemi F, Amiri A, Bajuri MY, Yuhana NY, Ferrara M. Role of different types of nanomaterials against diagnosis, prevention and therapy of COVID-19. SUSTAINABLE CITIES AND SOCIETY 2021; 72:103046. [PMID: 34055576 PMCID: PMC8146202 DOI: 10.1016/j.scs.2021.103046] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 05/21/2021] [Accepted: 05/22/2021] [Indexed: 05/24/2023]
Abstract
In 2019, a novel type of coronavirus emerged in China called SARS-COV-2, known COVID-19, threatens global health and possesses negative impact on people's quality of life, leading to an urgent need for its diagnosis and remedy. On the other hand, the presence of hazardous infectious waste led to the increase of the risk of transmitting the virus by individuals and by hospitals during the COVID-19 pandemic. Hence, in this review, we survey previous researches on nanomaterials that can be effective for guiding strategies to deal with the current COVID-19 pandemic and also decrease the hazardous infectious waste in the environment. We highlight the contribution of nanomaterials that possess potential to therapy, prevention, detect targeted virus proteins and also can be useful for large population screening, for the development of environmental sensors and filters. Besides, we investigate the possibilities of employing the nanomaterials in antiviral research and treatment development, examining the role of nanomaterials in antiviral- drug design, including the importance of nanomaterials in drug delivery and vaccination, and for the production of medical equipment. Nanomaterials-based technologies not only contribute to the ongoing SARS- CoV-2 research efforts but can also provide platforms and tools for the understanding, protection, detection and treatment of future viral diseases.
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Affiliation(s)
- Ferial Ghaemi
- Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia (UKM), 43600, Bangi, Selangor, Malaysia
| | - Amirhassan Amiri
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad 9177948974, Iran
| | - Mohd Yazid Bajuri
- Department of Orthopaedics and Traumatology, Faculty of Medicine, Universiti Kebangsaan Malaysia(UKM), Kuala Lumpur, Malaysia
| | - Nor Yuliana Yuhana
- Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia (UKM), 43600, Bangi, Selangor, Malaysia
| | - Massimiliano Ferrara
- ICRIOS - The Invernizzi Centre for Research in Innovation, Organization, Strategy and Entrepreneurship, Bocconi University, Department of Management and Technology Via Sarfatti, 25 20136, Milano (MI), Italy
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Tian E, Yu Q, Gao Y, Wang H, Wang C, Zhang Y, Li B, Zhu M, Mo J, Xu G, Li J. Ultralow Resistance Two-Stage Electrostatically Assisted Air Filtration by Polydopamine Coated PET Coarse Filter. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2102051. [PMID: 34309205 DOI: 10.1002/smll.202102051] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 06/17/2021] [Indexed: 06/13/2023]
Abstract
Airborne particulate matters (PM) pose serious health threats to the population, and efficient filtration is needed for indoor and vehicular environments. However, there is an intrinsic conflict between filtration efficiency, air resistance, and service life. In this study, a two-stage electrostatically assisted air (EAA) filtration device is designed and the efficiency-air resistance-filter life envelope is significantly improved by a thin coating of polydopamine (PDA) on the polyethylene terephthalate (PET) coarse filter by in situ dopamine polymerization. The 8 mm thick EAA PDA-140@PET filter has a high filtration efficiency of 99.48% for 0.3 µm particles, low air resistance of 9.5 Pa at a filtration velocity of 0.4 m s-1 , and steady performance up to 30 d. Compared with the bare PET filter, the penetration rate for 0.3 µm particles is lowered by 20×. The coated PDA is of submicron thickness, 10-3 × the gap distance between filter fibers, so low air resistance could be maintained. The filter shows steadily high filtration efficiency and an acceptable increase of air resistance and holds nearly as many particles as its own weight in a 30 day long-term test. The working mechanism of the EAA coarse filter is investigated, and the materials design criteria are proposed.
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Affiliation(s)
- Enze Tian
- Department of Nuclear Science and Engineering and Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Department of Building Science, Tsinghua University, Beijing, 100084, China
- Beijing Key Laboratory of Indoor Air Quality Evaluation and Control, Beijing, 100084, China
| | - Qipeng Yu
- Department of Nuclear Science and Engineering and Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Shenzhen Key Laboratory on Power Battery Safety Research and Shenzhen Geim Graphene Center, Tsinghua Shenzhen International Graduate School, Shenzhen, 518055, China
- School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
| | - Yilun Gao
- Department of Building Science, Tsinghua University, Beijing, 100084, China
- Beijing Key Laboratory of Indoor Air Quality Evaluation and Control, Beijing, 100084, China
| | - Hua Wang
- Department of Nuclear Science and Engineering and Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Chao Wang
- Department of Nuclear Science and Engineering and Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Yinping Zhang
- Department of Building Science, Tsinghua University, Beijing, 100084, China
- Beijing Key Laboratory of Indoor Air Quality Evaluation and Control, Beijing, 100084, China
| | - Baohua Li
- Shenzhen Key Laboratory on Power Battery Safety Research and Shenzhen Geim Graphene Center, Tsinghua Shenzhen International Graduate School, Shenzhen, 518055, China
| | - Meifang Zhu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Jinhan Mo
- Department of Building Science, Tsinghua University, Beijing, 100084, China
- Beijing Key Laboratory of Indoor Air Quality Evaluation and Control, Beijing, 100084, China
| | - Guiyin Xu
- Department of Nuclear Science and Engineering and Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Ju Li
- Department of Nuclear Science and Engineering and Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
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Zhang Y, Gao X, Wu Y, Gui J, Guo S, Zheng H, Wang ZL. Self-powered technology based on nanogenerators for biomedical applications. EXPLORATION (BEIJING, CHINA) 2021; 1:90-114. [PMID: 37366464 PMCID: PMC10291576 DOI: 10.1002/exp.20210152] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 07/09/2021] [Indexed: 06/28/2023]
Abstract
Biomedical electronic devices have enormous benefits for healthcare and quality of life. Still, the long-term working of those devices remains a great challenge due to the short life and large volume of conventional batteries. Since the nanogenerators (NGs) invention, they have been widely used to convert various ambient mechanical energy sources into electrical energy. The self-powered technology based on NGs is dedicated to harvesting ambient energy to supply electronic devices, which is an effective pathway to conquer the energy insufficiency of biomedical electronic devices. With the aid of this technology, it is expected to develop self-powered biomedical electronic devices with advanced features and distinctive functions. The goal of this review is to summarize the existing self-powered technologies based on NGs and then review the applications based on self-powered technologies in the biomedical field during their rapid development in recent years, including two main directions. The first is the NGs as independent sensors to converts biomechanical energy and heat energy into electrical signals to reflect health information. The second direction is to use the electrical energy produced by NGs to stimulate biological tissues or powering biomedical devices for achieving the purpose of medical application. Eventually, we have analyzed and discussed the remaining challenges and perspectives of the field. We believe that the self-powered technology based on NGs would advance the development of modern biomedical electronic devices.
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Affiliation(s)
- Yuanzheng Zhang
- Key Laboratory of Artificial Micro‐ and Nano‐structures of Ministry of EducationSchool of Physics and TechnologyWuhan UniversityWuhanP. R. China
- International Joint Research Laboratory of New Energy Materials and Devices of Henan ProvinceHenan UniversityKaifengP. R. China
| | - Xiangyang Gao
- Key Laboratory of Artificial Micro‐ and Nano‐structures of Ministry of EducationSchool of Physics and TechnologyWuhan UniversityWuhanP. R. China
| | - Yonghui Wu
- International Joint Research Laboratory of New Energy Materials and Devices of Henan ProvinceHenan UniversityKaifengP. R. China
| | - Jinzheng Gui
- Key Laboratory of Artificial Micro‐ and Nano‐structures of Ministry of EducationSchool of Physics and TechnologyWuhan UniversityWuhanP. R. China
| | - Shishang Guo
- Key Laboratory of Artificial Micro‐ and Nano‐structures of Ministry of EducationSchool of Physics and TechnologyWuhan UniversityWuhanP. R. China
| | - Haiwu Zheng
- International Joint Research Laboratory of New Energy Materials and Devices of Henan ProvinceHenan UniversityKaifengP. R. China
| | - Zhong Lin Wang
- Beijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijingP. R. China
- School of Materials Science and EngineeringGeorgia Institute of TechnologyAtlantaGeorgiaUSA
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Wang L, Bian Y, Lim CK, Niu Z, Lee PKH, Chen C, Zhang L, Daoud WA, Zi Y. Tribo-charge enhanced hybrid air filter masks for efficient particulate matter capture with greatly extended service life. NANO ENERGY 2021; 85:106015. [PMID: 36571102 PMCID: PMC9764213 DOI: 10.1016/j.nanoen.2021.106015] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 03/17/2021] [Accepted: 03/18/2021] [Indexed: 05/09/2023]
Abstract
Face masks have been an effective and indispensable personal protective measure against particulate matter pollutants and respiratory diseases, especially the novel Coronavirus disease recently. However, disposable surgical face masks suffer from low filtration efficiency for particles ranging from nano- to micro-size, and the limited service life of ~ 4 h. Here, a nano/micro fibrous hybrid air filter mask composing of electrospun nanofibrous network and poly(3,4-ethylenedioxythiophene:poly(styrenesulfonate) coated polypropylene (PP) is proposed. Furthermore, the resultant filter is supplied with tribo-charges by a freestanding sliding triboelectric nanogenerator. Through the enhanced synergistic effect of mechanical interception and electrostatic forces, the hybrid air filter demonstrates high filtration efficiency for particle size of 11.5 nm to 2.5 µm, with a 9.3-34.68% enhancement for particles of 0.3-2.5 µm compared to pristine PP, and 48-h stable filtration efficiency of 94% (0.3-0.4 µm) and 99% (1-2.5 µm) with a low pressure drop of ~110 Pa. In addition, sterilization ability of the tribo-charge enhanced air filter is demonstrated. This work provides a facile and cost-effective approach for state-of-the-art face masks toward high filtration performance of nano- to micro- particles with greatly extended service life.
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Affiliation(s)
- Lingyun Wang
- Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
- School of Energy and Environment, City University of Hong Kong, Hong Kong, Kowloon, China
| | - Ye Bian
- Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
- School of Energy and Environment, Southeast University, Nanjing 210096, China
| | - Chee Kent Lim
- School of Energy and Environment, City University of Hong Kong, Hong Kong, Kowloon, China
| | - Zhuolun Niu
- Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
| | - Patrick K H Lee
- School of Energy and Environment, City University of Hong Kong, Hong Kong, Kowloon, China
| | - Chun Chen
- Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
| | - Li Zhang
- Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
| | - Walid A Daoud
- School of Energy and Environment, City University of Hong Kong, Hong Kong, Kowloon, China
| | - Yunlong Zi
- Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
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Ogbuoji EA, Zaky AM, Escobar IC. Advanced Research and Development of Face Masks and Respirators Pre and Post the Coronavirus Disease 2019 (COVID-19) Pandemic: A Critical Review. Polymers (Basel) 2021; 13:1998. [PMID: 34207184 PMCID: PMC8235328 DOI: 10.3390/polym13121998] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 06/11/2021] [Accepted: 06/11/2021] [Indexed: 12/05/2022] Open
Abstract
The outbreak of the COVID-19 pandemic, in 2020, has accelerated the need for personal protective equipment (PPE) masks as one of the methods to reduce and/or eliminate transmission of the coronavirus across communities. Despite the availability of different coronavirus vaccines, it is still recommended by the Center of Disease Control and Prevention (CDC), World Health Organization (WHO), and local authorities to apply public safety measures including maintaining social distancing and wearing face masks. This includes individuals who have been fully vaccinated. Remarkable increase in scientific studies, along with manufacturing-related research and development investigations, have been performed in an attempt to provide better PPE solutions during the pandemic. Recent literature has estimated the filtration efficiency (FE) of face masks and respirators shedding the light on specific targeted parameters that investigators can measure, detect, evaluate, and provide reliable data with consistent results. This review showed the variability in testing protocols and FE evaluation methods of different face mask materials and/or brands. In addition to the safety requirements needed to perform aerosol viral filtration tests, one of the main challenges researchers currently face is the inability to simulate or mimic true aerosol filtration scenarios via laboratory experiments, field tests, and in vitro/in vivo investigations. Moreover, the FE through the mask can be influenced by different filtration mechanisms, environmental parameters, filtration material properties, number of layers used, packing density, fiber charge density, fiber diameter, aerosol type and particle size, aerosol face velocity and concentration loadings, and infectious concentrations generated due to different human activities. These parameters are not fully understood and constrain the design, production, efficacy, and efficiency of face masks.
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Affiliation(s)
- Ebuka A. Ogbuoji
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY 40506, USA;
| | - Amr M. Zaky
- BioMicrobics Inc., 16002 West 110th Street, Lenexa, KS 66219, USA;
| | - Isabel C. Escobar
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY 40506, USA;
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Lyu C, Zhao P, Xie J, Dong S, Liu J, Rao C, Fu J. Electrospinning of Nanofibrous Membrane and Its Applications in Air Filtration: A Review. NANOMATERIALS 2021; 11:nano11061501. [PMID: 34204161 PMCID: PMC8228272 DOI: 10.3390/nano11061501] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 06/02/2021] [Accepted: 06/04/2021] [Indexed: 02/07/2023]
Abstract
Air pollution caused by particulate matter and toxic gases is violating individual’s health and safety. Nanofibrous membrane, being a reliable filter medium for particulate matter, has been extensively studied and applied in the field of air purification. Among the different fabrication approaches of nanofibrous membrane, electrospinning is considered as the most favorable and effective due to its advantages of controllable process, high production efficiency, and low cost. The electrospun membranes, made of different materials and unique structures, exhibit good PM2.5 filtration performance and multi-functions, and are used as masks and filters against PM2.5. This review presents a brief overview of electrospinning techniques, different structures of electrospun nanofibrous membranes, unique characteristics and functions of the fabricated membranes, and summarization of the outdoor and indoor applications in PM filtration.
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Affiliation(s)
- Chenxin Lyu
- The State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, China; (C.L.); (J.X.); (J.L.); (C.R.); (J.F.)
- Key Lab of 3D Printing Process and Equipment of Zhejiang Province, Zhejiang University, Hangzhou 310027, China
| | - Peng Zhao
- The State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, China; (C.L.); (J.X.); (J.L.); (C.R.); (J.F.)
- Key Lab of 3D Printing Process and Equipment of Zhejiang Province, Zhejiang University, Hangzhou 310027, China
- Correspondence:
| | - Jun Xie
- The State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, China; (C.L.); (J.X.); (J.L.); (C.R.); (J.F.)
- Key Lab of 3D Printing Process and Equipment of Zhejiang Province, Zhejiang University, Hangzhou 310027, China
| | - Shuyuan Dong
- School of Mathematics, Jilin University, Changchun 130012, China;
| | - Jiawei Liu
- The State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, China; (C.L.); (J.X.); (J.L.); (C.R.); (J.F.)
- Key Lab of 3D Printing Process and Equipment of Zhejiang Province, Zhejiang University, Hangzhou 310027, China
| | - Chengchen Rao
- The State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, China; (C.L.); (J.X.); (J.L.); (C.R.); (J.F.)
- Key Lab of 3D Printing Process and Equipment of Zhejiang Province, Zhejiang University, Hangzhou 310027, China
| | - Jianzhong Fu
- The State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, China; (C.L.); (J.X.); (J.L.); (C.R.); (J.F.)
- Key Lab of 3D Printing Process and Equipment of Zhejiang Province, Zhejiang University, Hangzhou 310027, China
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43
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Karmacharya M, Kumar S, Gulenko O, Cho YK. Advances in Facemasks during the COVID-19 Pandemic Era. ACS APPLIED BIO MATERIALS 2021; 4:3891-3908. [PMID: 35006814 PMCID: PMC7839420 DOI: 10.1021/acsabm.0c01329] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 01/04/2021] [Indexed: 12/17/2022]
Abstract
The outbreak of coronavirus disease (COVID-19) has transformed the daily lifestyles of people worldwide. COVID-19 was characterized as a pandemic owing to its global spread, and technologies based on engineered materials that help to reduce the spread of infections have been reported. Nanotechnology present in materials with enhanced physicochemical properties and versatile chemical functionalization offer numerous ways to combat the disease. Facemasks are a reliable preventive measure, although they are not 100% effective against viral infections. Nonwoven materials, which are the key components of masks, act as barriers to the virus through filtration. However, there is a high chance of cross-infection because the used mask lacks virucidal properties and can become an additional source of infection. The combination of antiviral and filtration properties enhances the durability and reliability of masks, thereby reducing the likelihood of cross-infection. In this review, we focus on masks, from the manufacturing stage to practical applications, and their abilities to combat COVID-19. Herein, we discuss the impacts of masks on the environment, while considering safe industrial production in the future. Furthermore, we discuss available options for future research directions that do not negatively impact the environment.
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Affiliation(s)
- Mamata Karmacharya
- Center for Soft and Living Matter,
Institute for Basic Science (IBS), UNIST-gil 50, Ulsan 44919,
Republic of Korea
- Department of Chemical Engineering, Ulsan
National Institute of Science and Technology (UNIST), UNIST-gil 50, Ulsan
44919, Republic of Korea
| | - Sumit Kumar
- Center for Soft and Living Matter,
Institute for Basic Science (IBS), UNIST-gil 50, Ulsan 44919,
Republic of Korea
- Department of Biomedical Engineering, Ulsan
National Institute of Science and Technology (UNIST), UNIST-gil 50, Ulsan
44919, Republic of Korea
| | - Oleksandra Gulenko
- Center for Soft and Living Matter,
Institute for Basic Science (IBS), UNIST-gil 50, Ulsan 44919,
Republic of Korea
- Department of Biomedical Engineering, Ulsan
National Institute of Science and Technology (UNIST), UNIST-gil 50, Ulsan
44919, Republic of Korea
| | - Yoon-Kyoung Cho
- Center for Soft and Living Matter,
Institute for Basic Science (IBS), UNIST-gil 50, Ulsan 44919,
Republic of Korea
- Department of Biomedical Engineering, Ulsan
National Institute of Science and Technology (UNIST), UNIST-gil 50, Ulsan
44919, Republic of Korea
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44
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Mariello M, Qualtieri A, Mele G, De Vittorio M. Metal-Free Multilayer Hybrid PENG Based on Soft Electrospun/-Sprayed Membranes with Cardanol Additive for Harvesting Energy from Surgical Face Masks. ACS APPLIED MATERIALS & INTERFACES 2021; 13:20606-20621. [PMID: 33896167 DOI: 10.1021/acsami.1c01740] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Disposable surgical face masks are usually used by medical/nurse staff but the current Covid-19 pandemic has caused their massive use by many people. Being worn closely attached to the people's face, they are continuously subjected to routine movements, i.e., facial expressions, breathing, and talking. These motional forces represent an unusual source of wasted mechanical energy that can be rather harvested by electromechanical transducers and exploited to power mask-integrated sensors. Typically, piezoelectric and triboelectric nanogenerators are exploited to this aim; however, most of the current devices are too thick or wide, not really conformable, and affected by humidity, which make them hardly embeddable in a mask, in contact with skin. Different from recent attempts to fabricate smart energy-harvesting cloth masks, in this work, a wearable energy harvester is rather enclosed in the mask and can be reused and not disposed. The device is a metal-free hybrid piezoelectric nanogenerator (hPENG) based on soft biocompatible materials. In particular, poly(vinylidene fluoride) (PVDF) membranes in the pure form and with a biobased plasticizer (cardanol oil, CA) are electrospun onto a laser-ablated polyimide flexible substrate attached on a skin-conformable elastomeric blend of poly(dimethylsiloxane) (PDMS) and Ecoflex. The multilayer structure of the device harnesses the piezoelectricity of the PVDF nanofibers and the friction triboelectric effects. The ultrasensitive mechanoelectrical transduction properties of the composite device are determined by the strong electrostatic behavior of the membranes and the plasticization effect of cardanol. In addition, encapsulation based on PVDF, PDMS, CA, and parylene C is used, allowing the hPENG to exhibit optimal reliability and resistance against the wet and warm atmosphere around the face mask. The proposed device reveals potential applications for the future development of smart masks with coupled energy-harvesting devices, allowing to use them not only for anti-infective protection but also to supply sensors or active antibacterial/viral devices.
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Affiliation(s)
- Massimo Mariello
- Center for Biomolecular Nanotechnologies, Istituto Italiano di Tecnologia, 73010 Arnesano (Lecce), Italy
- Dipartimento di Ingegneria dell'Innovazione, Università del Salento, 73100 Lecce, Italy
| | - Antonio Qualtieri
- Center for Biomolecular Nanotechnologies, Istituto Italiano di Tecnologia, 73010 Arnesano (Lecce), Italy
| | - Giuseppe Mele
- Dipartimento di Ingegneria dell'Innovazione, Università del Salento, 73100 Lecce, Italy
| | - Massimo De Vittorio
- Center for Biomolecular Nanotechnologies, Istituto Italiano di Tecnologia, 73010 Arnesano (Lecce), Italy
- Dipartimento di Ingegneria dell'Innovazione, Università del Salento, 73100 Lecce, Italy
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45
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Lin Y, Zhang Y, Zhang F, Zhang M, Li D, Deng G, Guan L, Dong M. Studies on the electrostatic effects of stretched PVDF films and nanofibers. NANOSCALE RESEARCH LETTERS 2021; 16:79. [PMID: 33939029 PMCID: PMC8093351 DOI: 10.1186/s11671-021-03536-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 04/20/2021] [Indexed: 05/09/2023]
Abstract
The electroactive β-phase in Poly (vinylidene fluoride, PVDF) is the most desirable conformation due to its highest pyro- and piezoelectric properties, which make it feasible to be used as flexible sensors, wearable electronics, and energy harvesters etc. In this study, we successfully developed a method to obtain high-content β-phase PVDF films and nanofiber meshes by mechanical stretching and electric spinning. The phase transition process and pyro- and piezoelectric effects of stretched films and nanofiber meshes were characterized by monitoring the polarized light microscopy (PLM) images, outputting currents and open-circuit voltages respectively, which were proved to be closely related to stretching ratio (λ) and concentrations. This study could expand a new route for the easy fabrication and wide application of PVDF films or fibers in wearable electronics, sensors, and energy harvesting devices.
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Affiliation(s)
- Yixuan Lin
- Department of Chemistry, Renmin University of China, Beijing, 100872 People’s Republic of China
| | - Yuqiong Zhang
- Department of Chemistry, Renmin University of China, Beijing, 100872 People’s Republic of China
| | - Fan Zhang
- Department of Chemistry, Renmin University of China, Beijing, 100872 People’s Republic of China
| | - Meining Zhang
- Department of Chemistry, Renmin University of China, Beijing, 100872 People’s Republic of China
| | - Dalong Li
- School of Marine Science and Technology, Harbin Institute of Technology At Weihai, Weihai, 264209 Shandong People’s Republic of China
- Sino-Danish Center for Education and Research (SDC), Interdisciplinary Nanoscience Center (iNANO), Aarhus University, DK-8000 Aarhus C, Denmark
| | - Gaofeng Deng
- State Key Laboratory of Building Safety and Environment, China Academy of Building Research, Beijing, 100013 People’s Republic of China
| | - Li Guan
- Department of Chemistry, Renmin University of China, Beijing, 100872 People’s Republic of China
| | - Mingdong Dong
- Sino-Danish Center for Education and Research (SDC), Interdisciplinary Nanoscience Center (iNANO), Aarhus University, DK-8000 Aarhus C, Denmark
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Lin S, Wang S, Yang W, Chen S, Xu Z, Mo X, Zhou H, Duan J, Hu B, Huang L. Trap-Induced Dense Monocharged Perfluorinated Electret Nanofibers for Recyclable Multifunctional Healthcare Mask. ACS NANO 2021; 15:5486-5494. [PMID: 33626276 DOI: 10.1021/acsnano.1c00238] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Recently, wearable and breathable healthcare devices for air filtering and real-time vital signs monitoring have become urgently needed since virus and particulate matter (PM) cause serious health issues. Herein, we present a trap-induced dense monocharged hybrid perfluorinated electret nanofibrous membrane (HPFM) for highly efficient ultrafine PM0.3 removal with an efficiency of 99.712% under low pressure drop (38.1 Pa) and high quality factor of 0.154 Pa-1. Furthermore, a recyclable multifunctional healthcare mask is constructed by integrating the HPFM-based nanogenerator, which realizes efficient PM0.3 filtering and wireless real-time human respiration monitoring simultaneously. More importantly, the performance of this mask is still relatively stable even at 100%RH humidity and 92 °C temperature conditions for 48 h, which infers that it can be reused after disinfection. The strategy of fabricating HPFM provides an approach to obtain charge-rich stable electret materials, and the design of multifunctional masks demonstrates their potential application for future personal protection and health monitoring devices.
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Affiliation(s)
- Shizhe Lin
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, Hubei P.R. China
| | - Shuixiang Wang
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, Hubei P.R. China
| | - Wei Yang
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, Hubei P.R. China
| | - Shuwen Chen
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, Hubei P.R. China
| | - Zisheng Xu
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, Hubei P.R. China
| | - Xiwei Mo
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, Hubei P.R. China
| | - He Zhou
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, Hubei P.R. China
| | - Jiangjiang Duan
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, Hubei P.R. China
| | - Bin Hu
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, Hubei P.R. China
| | - Liang Huang
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, Hubei P.R. China
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47
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Figerez SP, Patra S, Rajalakshmi G, Narayanan TN. Graphene oxide-based rechargeable respiratory masks. OXFORD OPEN MATERIALS SCIENCE 2021; 1:itab003. [PMID: 38626262 PMCID: PMC8108635 DOI: 10.1093/oxfmat/itab003] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 01/20/2021] [Accepted: 01/24/2021] [Indexed: 12/23/2022]
Abstract
Respiratory masks having similar standards of 'N95', defined by the US National Institute for Occupational Safety and Health, will be highly sought after, post the current COVID-19 pandemic. Here, such a low-cost (∼$1/mask) mask design having electrostatic rechargeability and filtration efficiency of >95% with a quality factor of ∼20 kPa-1 is demonstrated. This filtration efficacy is for particles of size 300 nm. The tri-layer mask, named PPDFGO tri, contains nylon, modified polypropylene (PPY), and cotton nonwoven fabrics as three layers. The melt-spun PPY, available in a conventional N95 mask, modified with graphene oxide and polyvinylidene fluoride mixture containing paste using a simple solution casting method acts as active filtration layer. The efficacy of this tri-layer system toward triboelectric rechargeability using small mechanical agitations is demonstrated here. These triboelectric nanogenerator (TENG)-assisted membranes have high electrostatic charge retention capacity (∼1 nC/cm2 after 5 days in ambient condition) and high rechargeability even in very humid conditions (>80% RH). A simple but robust permeability measurement set up is also constructed to test these TENG-based membranes, where a flow rate of 30-35 L/min is maintained during the testing. Such a simple modification to the existing mask designs enabling their rechargeability via external mechanical disturbances, with enhanced usability for single use as well as for reuse with decontantamination, will be highly beneficial in the realm of indispensable personal protective equipment.
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Affiliation(s)
- Stelbin Peter Figerez
- Tata Institute of Fundamental Research - Hyderabad, Sy. No. 36/P Serilingampally Mandal, Gopanapally Village, Hyderabad - 500046, India
| | - Sudeshna Patra
- Tata Institute of Fundamental Research - Hyderabad, Sy. No. 36/P Serilingampally Mandal, Gopanapally Village, Hyderabad - 500046, India
| | - G Rajalakshmi
- Tata Institute of Fundamental Research - Hyderabad, Sy. No. 36/P Serilingampally Mandal, Gopanapally Village, Hyderabad - 500046, India
| | - Tharangattu N Narayanan
- Tata Institute of Fundamental Research - Hyderabad, Sy. No. 36/P Serilingampally Mandal, Gopanapally Village, Hyderabad - 500046, India
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48
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Dellweg D, Lepper PM, Nowak D, Köhnlein T, Olgemöller U, Pfeifer M. [Statement of the German Society for Pulmonology and Respiratory Medicine Regarding the Regulation to Use FFP and Surgical Masks in the General Population]. Pneumologie 2021; 75:181-186. [PMID: 33598902 DOI: 10.1055/a-1375-6717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
On January 19, 2021, a new regulation on the mask requirement was issued in an initiative by the federal and state governments. This regulation obliges citizens to wear medical masks on public transport and in shops. In its statement, the German Society for Pneumology and Respiratory Medicine (DGP) describes the technical background of the various medical masks and explains their functionality using the associated standards. The DGP comes to the conclusion that FFP masks of the EN 149 standard were designed for the self-protection of the wearer and ensure this if the mask is worn properly and closes tightly to the face. Incorrect use must be avoided at all costs. Surgical masks in accordance with the EN 14683 standard were designed to protect against bacteria-carrying aerosols and, due to their design, have a rather low self-protection component. Community masks are not yet subject to any official standard. Community masks with electrostatic properties and high filtration performance could represent a reusable alternative in the future. Depending on the severity of their illness, patients with heart and/or lung diseases require a stress test with a mask to minimize medical risks.
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Affiliation(s)
- D Dellweg
- Fachkrankenhaus Kloster Grafschaft GmbH, Akademisches Lehrkrankenhaus der Philipps-Universität Marburg, Schmallenberg Grafschaft
| | - P M Lepper
- Innere Medizin V - Pneumologie, Allergologie, Beatmungs- und Umweltmedizin, Universitätsklinikum des Saarlandes, Homburg/Saar
| | - D Nowak
- Klinikum der Universität München, Institut und Poliklinik für Arbeits-, Sozial- und Umweltmedizin, LMU München, Mitglied des Deutschen Zentrums für Lungenforschung (DZL), München
| | - T Köhnlein
- Pneumologisches Facharztzentrum Teuchern, Teuchern
| | - U Olgemöller
- Klinik für Kardiologie und Pneumologie, Universitätsmedizin Göttingen, Georg-August-Universität, Göttingen
| | - M Pfeifer
- Klinik und Poliklinik für Innere Medizin II, Universitätsklinik Regensburg, Regensburg.,Abteilung für Pneumologie, Fachklinik für Lungenerkrankungen Donaustauf, Donaustauf.,Krankenhaus Barmherzige Brüder, Klinik für Pneumologie und konservative Intensivmedizin, Regensburg
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49
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Xiong SW, Fu PG, Zou Q, Chen LY, Jiang MY, Zhang P, Wang ZG, Cui LS, Guo H, Gai JG. Heat Conduction and Antibacterial Hexagonal Boron Nitride/Polypropylene Nanocomposite Fibrous Membranes for Face Masks with Long-Time Wearing Performance. ACS APPLIED MATERIALS & INTERFACES 2021; 13:196-206. [PMID: 33356094 DOI: 10.1021/acsami.0c17800] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Wearing surgical masks is one of the best protective measures to protect humans from viral invasion during the 2019 coronavirus (COVID-19) outbreak. However, wearing surgical masks for extended periods will cause uncomfortable sweltering sense to users and are easy to breed bacteria. Here, we reported a novel fibrous membrane with outstanding comfortability and antibacterial activity prepared by PP ultrafine fiber nonwovens and antibacterial functionalized h-BN nanoparticles (QAC/h-BN). The thermal conductivity of commercial PP nonwovens was only 0.13 W m-1 K-1, but that of the QAC/h-BN/PP nanocomposite fibrous membranes can reach 0.88 W m-1 K-1, an enhancement of 706.5% than commercial PP nonwovens. The surface temperature of commercial PP surgical masks was 31.8 °C when the wearing time was 60 min. In contrast, QAC/h-BN/PP surgical masks can reach 33.6 °C at the same tested time, exhibiting stronger heat dissipation than commercial PP surgical masks. Besides, the antibacterial rates of QAC/h-BN/PP nanocomposite fibrous membranes were 99.3% for E. coli and 96.1% for S. aureus, and their antibacterial mechanism was based on "contact killing" without the release of unfavorable biocides. We think that the QAC/h-BN/PP nanocomposite fibrous membranes could provide better protection to people.
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Affiliation(s)
- Si-Wei Xiong
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu, Sichuan 610065, China
| | - Pei-Gen Fu
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu, Sichuan 610065, China
| | - Qian Zou
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu, Sichuan 610065, China
| | - Li-Ye Chen
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu, Sichuan 610065, China
| | - Meng-Ying Jiang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu, Sichuan 610065, China
| | - Pan Zhang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu, Sichuan 610065, China
| | - Ze-Gang Wang
- Shandong Chenzhong Machinery Co., Ltd, No.3 Jingtian Road, Tianzhuang Town, Huantai County, Zibo City, Shandong Province 256402, China
| | - Li-Sheng Cui
- Shandong Chenzhong Machinery Co., Ltd, No.3 Jingtian Road, Tianzhuang Town, Huantai County, Zibo City, Shandong Province 256402, China
| | - Hu Guo
- Shandong HFT Environmental Protection Technology CO., Ltd., Block B1, Chuangzhi Valley, Huantai County, Zibo City, Shandong Province 256400, China
| | - Jing-Gang Gai
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu, Sichuan 610065, China
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50
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Saxena A, Khare D, Agrawal S, Singh A, Dubey AK. Recent advances in materials science: a reinforced approach toward challenges against COVID-19. EMERGENT MATERIALS 2021; 4:57-73. [PMID: 33644691 PMCID: PMC7898028 DOI: 10.1007/s42247-021-00179-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Accepted: 01/27/2021] [Indexed: 05/15/2023]
Abstract
With the recent COVID-19 pandemic, medical professionals and scientists have encountered an unprecedented trouble to make the latest technological solutions to work. Despite of abundant tools available as well as initiated for diagnosis and treatment, researchers in the healthcare systems were in backfoot to provide concrete answers to the demanding challenge of SARS-CoV-2. It has incited global collaborative efforts in every field from economic, social, and political to dedicated science to confront the growing demand toward solution to this outbreak. Field of materials science has been in the frontline to the current scenario to provide major diagnostic tools, antiviral materials, safety materials, and various therapeutic means such as, antiviral drug design, drug delivery, and vaccination. In the present article, we emphasized the role of materials science to the development of PPE kits such as protecting suits, gloves, and masks as well as disinfection of the surfaces/surroundings. In addition, contribution of materials science towards manufacturing diagnostic devices such as microfluidics, immunosensors as well as biomaterials with a point of care analysis has also been discussed. Further, the efficacy of nanoparticles and scaffolds for antiviral drug delivery and micro-physiological systems as well as materials derived from human tissues for extracorporeal membrane oxygenation (ECMO) devices have been elaborated towards therapeutic applications.
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Affiliation(s)
- Abhinav Saxena
- Department of Ceramic Engineering, Indian Institute of Technology (Banaras Hindu University), -221005, Varanasi, India
| | - Deepak Khare
- Department of Ceramic Engineering, Indian Institute of Technology (Banaras Hindu University), -221005, Varanasi, India
| | - Swati Agrawal
- Department of Ceramic Engineering, Indian Institute of Technology (Banaras Hindu University), -221005, Varanasi, India
| | - Angaraj Singh
- Department of Ceramic Engineering, Indian Institute of Technology (Banaras Hindu University), -221005, Varanasi, India
| | - Ashutosh Kumar Dubey
- Department of Ceramic Engineering, Indian Institute of Technology (Banaras Hindu University), -221005, Varanasi, India
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