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Tabatabaei N, Faridi-Majidi R, Boroumand S, Norouz F, Rahmani M, Rezaie F, Fayazbakhsh F, Faridi-Majidi R. Nanofibers in Respiratory Masks: An Alternative to Prevent Pathogen Transmission. IEEE Trans Nanobioscience 2023; 22:685-701. [PMID: 35724284 PMCID: PMC10620960 DOI: 10.1109/tnb.2022.3181745] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Recent global outbreak of COVID-19 has raised serious awareness about our abilities to protect ourselves from hazardous pathogens and volatile organic compounds. Evidence suggests that personal protection equipment such as respiratory masks can radically decrease rates of transmission and infections due to contagious pathogens. To increase filtration efficiency without compromising breathability, application of nanofibers in production of respiratory masks have been proposed. The emergence of nanofibers in the industry has since introduced a next generation of respiratory masks that promises improved filtration efficiency and breathability via nanometric pores and thin fiber thickness. In addition, the surface of nanofibers can be functionalized and enhanced to capture specific particles. In addition to conventional techniques such as melt-blown, respiratory masks by nanofibers have provided an opportunity to prevent pathogen transmission. As the surge in global demand for respiratory masks increases, herein, we reviewed recent advancement of nanofibers as an alternative technique to be used in respiratory mask production.
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2
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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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3
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Kim J, Kim JY, Bhattarai G, So HS, Kook SH, Lee JC. Periodontal Ligament-Mimetic Fibrous Scaffolds Regulate YAP-Associated Fibroblast Behaviors and Promote Regeneration of Periodontal Defect in Relation to the Scaffold Topography. ACS APPLIED MATERIALS & INTERFACES 2023; 15:599-616. [PMID: 36575925 PMCID: PMC9837821 DOI: 10.1021/acsami.2c18893] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 12/16/2022] [Indexed: 06/17/2023]
Abstract
Although multiple regenerative strategies are being developed for periodontal reconstruction, guided periodontal ligament (PDL) regeneration is difficult because of its cellular and fibrous complexities. Here, we manufactured four different types of PDL-mimic fibrous scaffolds on a desired single mat. These scaffolds exhibited a structure of PDL matrix and human PDL fibroblasts (PDLFs) cultured on the scaffolds resembling morphological phenotypes present in native PDLF. The scaffold-seeded PDLF exerted proliferative, osteoblastic, and osteoclastogenic potentials depending on the fiber topographical cues. Fiber surface-regulated behaviors of PDLF were correlated with the expression patterns of yes-associated protein (YAP), CD105, periostin, osteopontin, and vinculin. Transfection with si-RNA confirmed that YAP acted as the master mechanosensing regulator. Of the as-spun scaffolds, aligned or grid-patterned microscale scaffold regulated the YAP-associated behavior of PDLF more effectively than nanomicroscale or random-oriented microscale scaffold. Implantation with hydrogel complex conjugated with microscale-patterned or grid-patterned scaffold, but not other types of scaffolds, recovered the defected PDL with native PDL-mimic cellularization and fiber structure in the reformed PDL. Our results demonstrate that PDL-biomimetic scaffolds regulate topography-related and YAP-mediated behaviors of PDLF in relation to their topographies. Overall, this study may support a clinical approach of the fiber-hydrogel complex in guided PDL regenerative engineering.
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Affiliation(s)
- Jeong
In Kim
- Cluster
for Craniofacial Development and Regeneration Research, Institute
of Oral Biosciences and School of Dentistry, Jeonbuk National University, Jeonju 54896, South Korea
| | - Ju Yeon Kim
- Department
of Bionanosystem Engineering, Jeonbuk National
University, Jeonju 54896, South Korea
| | - Govinda Bhattarai
- Cluster
for Craniofacial Development and Regeneration Research, Institute
of Oral Biosciences and School of Dentistry, Jeonbuk National University, Jeonju 54896, South Korea
| | - Han-Sol So
- Department
of Bioactive Material Sciences, Research Center of Bioactive Materials, Jeonbuk National University, Jeonju 54896, South Korea
| | - Sung-Ho Kook
- Department
of Bioactive Material Sciences, Research Center of Bioactive Materials, Jeonbuk National University, Jeonju 54896, South Korea
| | - Jeong-Chae Lee
- Cluster
for Craniofacial Development and Regeneration Research, Institute
of Oral Biosciences and School of Dentistry, Jeonbuk National University, Jeonju 54896, South Korea
- Department
of Bioactive Material Sciences, Research Center of Bioactive Materials, Jeonbuk National University, Jeonju 54896, South Korea
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4
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Gungor M, Selcuk S, Toptas A, Kilic A. Aerosol Filtration Performance of Solution Blown PA6 Webs with Bimodal Fiber Distribution. ACS OMEGA 2022; 7:46602-46612. [PMID: 36570188 PMCID: PMC9773963 DOI: 10.1021/acsomega.2c05449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 11/28/2022] [Indexed: 06/17/2023]
Abstract
A bimodal web, where both nanofibers and microfibers are present and distributed randomly across the same web, can deliver high filter efficiency and low pressure drop at the same time since in such a web, filter efficiency is high thanks to small pores created by the presence of nanofibers and the interfiber space created by the presence of microfibers, which is large enough for air to flow through with little resistance. In this work, a bimodal polyamide 6 (PA6) filter web was fabricated via a modified solution blowing (m-SB) technique that produced nanofibers and microfibers simultaneously. Scanning electron microscope (SEM) images of the webs were used to analyze the fiber morphology. Additionally, air permeability, solidity, porosity, filtration performance, and tensile strength of the samples were measured. The bimodal filter web consisted of nanofibers and microfibers with average diameters of 81.5 ± 127 nm and 1.6 ± 0.458 μm, respectively. Its filter efficiency, pressure drop at 95 L min-1, and tensile strength were 98.891%, 168 Pa, and 0.1 MPa, respectively. Its quality factor (QF) and tensile strength were 0.0268 Pa-1 and 0.1 MPa, respectively. When compared with commercially available filters, the bimodal web produced had superior filter performance, constituting a suitable alternative for air filter applications.
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Affiliation(s)
- Melike Gungor
- TEMAG
Lab., Textile Technol. and Design Faculty, Istanbul Technical University, Istanbul34437, Turkey
- Areka
Advanced Technologies Ltd. Co., Istanbul34467, Turkey
| | - Sule Selcuk
- TEMAG
Lab., Textile Technol. and Design Faculty, Istanbul Technical University, Istanbul34437, Turkey
| | - Ali Toptas
- TEMAG
Lab., Textile Technol. and Design Faculty, Istanbul Technical University, Istanbul34437, Turkey
- Safranbolu
Vocational School, Karabuk University, Karabuk78050, Turkey
| | - Ali Kilic
- TEMAG
Lab., Textile Technol. and Design Faculty, Istanbul Technical University, Istanbul34437, Turkey
- Areka
Advanced Technologies Ltd. Co., Istanbul34467, Turkey
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5
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Numerical simulation of mixed aerosols deposition behavior on cylindrical cross fibers. ADV POWDER TECHNOL 2022. [DOI: 10.1016/j.apt.2022.103849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Hu S, Zheng Z, Tian Y, Zhang H, Wang M, Yu Z, Zhang X. Preparation and Characterization of Electrospun PAN-CuCl2 Composite Nanofiber Membranes with a Special Net Structure for High-Performance Air Filters. Polymers (Basel) 2022; 14:polym14204387. [PMID: 36297966 PMCID: PMC9611402 DOI: 10.3390/polym14204387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 10/09/2022] [Accepted: 10/10/2022] [Indexed: 11/30/2022] Open
Abstract
The growing issue of particulate matter (PM) air pollution has given rise to extensive research into the development of high-performance air filters recently. As the core of air filters, various types of electrospun nanofiber membranes have been fabricated and developed. With the novel poly(acrylonitrile) (PAN)-CuCl2 composite nanofiber membranes as the filter membranes, we demonstrate the high PM removal efficiency exceeding 99% and can last a long service time. The nanoscale morphological characteristics of nanofiber membranes were investigated by scanning electron microscopy, transmission electron microscopy, and mercury intrusion porosimeter. It is found that they appear to have a special net structure at specific CuCl2 concentrations, which substantially improves PM removal efficiency. We anticipate the PAN-CuCl2 composite nanofiber membranes will be expected to effectively solve some pressing problems in air filtration.
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Affiliation(s)
- Shiqian Hu
- Department of Electrical Engineering and Computer Science, Ningbo University, Ningbo 315211, China
| | - Zida Zheng
- Department of Electrical Engineering and Computer Science, Ningbo University, Ningbo 315211, China
| | - Ye Tian
- Department of Electrical Engineering and Computer Science, Ningbo University, Ningbo 315211, China
| | - Huihong Zhang
- Department of Electrical Engineering and Computer Science, Ningbo University, Ningbo 315211, China
- Correspondence: (H.Z.); (X.Z.)
| | - Mao Wang
- Nantong Hongda Petrochemical Equipment Manufacturing Co., Ltd., Nantong 226010, China
| | - Zhongwei Yu
- Nantong Hongda Petrochemical Equipment Manufacturing Co., Ltd., Nantong 226010, China
| | - Xiaowei Zhang
- Department of Electrical Engineering and Computer Science, Ningbo University, Ningbo 315211, China
- National Laboratory of Solid State Microstructures, Department of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China
- Correspondence: (H.Z.); (X.Z.)
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7
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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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8
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Chen SS, Wang TQ, Song WC, Tang ZJ, Cao ZM, Chen HJ, Lian Y, Hu X, Zheng WJ, Lian HZ. A novel particulate matter sampling and cell exposure strategy based on agar membrane for cytotoxicity study. CHEMOSPHERE 2022; 300:134473. [PMID: 35367490 DOI: 10.1016/j.chemosphere.2022.134473] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 03/26/2022] [Accepted: 03/28/2022] [Indexed: 06/14/2023]
Abstract
Laboratories use different strategies to sample and extract atmospheric particulate matter (PM), some of which can be very complicated. Due to the absence of a standard protocol, it is difficult to compare the results of PM toxicity assessment across different laboratories. Here, we proposed a novel PM sampling and cell exposure strategy based on agar membrane. The agar membrane, prepared by a simple freeze-drying method, has a relatively flat surface and porous interior. We demonstrated that the agar membrane was a reliable substitute material for PM sampling. Then the PM on the agar membranes was directly extracted with the culture medium by vortex method, and the PM on the polytetrafluoroethylene (PTFE) filters was extracted with water by the traditional ultrasonic method for comparison. The extraction efficiency was evaluated and in vitro cytotoxicity assays were carried out to investigate the toxic effects of PM extracted with two strategies on macrophage cells. The results showed that the PM extracted from agar membranes induced higher cytotoxicity and more differentially expressed proteins. Overall, the novel PM sampling-cell exposure strategy based on the agar membrane is easy to operate, biocompatible and comparable, and has low disturbance, could be an alternative sampling and extraction method for PM toxicity assessment.
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Affiliation(s)
- Si-Si Chen
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry & Chemical Engineering and Center of Materials Analysis, Nanjing University, Nanjing, 210023, China
| | - Tian-Qi Wang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry & Chemical Engineering and Center of Materials Analysis, Nanjing University, Nanjing, 210023, China
| | - Wan-Chen Song
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, 210023, China
| | - Zhi-Jie Tang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry & Chemical Engineering and Center of Materials Analysis, Nanjing University, Nanjing, 210023, China
| | - Zhao-Ming Cao
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry & Chemical Engineering and Center of Materials Analysis, Nanjing University, Nanjing, 210023, China
| | - Hong-Juan Chen
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, 210023, China
| | - Yi Lian
- Department of Epidemiology, Biostatistics and Occupational Health, McGill University, QC, H3A 1A2, Canada
| | - Xin Hu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry & Chemical Engineering and Center of Materials Analysis, Nanjing University, Nanjing, 210023, China
| | - Wei-Juan Zheng
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, 210023, China
| | - Hong-Zhen Lian
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry & Chemical Engineering and Center of Materials Analysis, Nanjing University, Nanjing, 210023, China.
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9
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Lin S, Fu X, Luo M, Zhong WH. Tailoring bimodal protein fabrics for enhanced air filtration performance. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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10
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Robert B, Nallathambi G. Tailoring mechanically robust nanofibrous membrane for PM 2.5-0.3 filtration and evaluating their behavior using response surface Box–Behnken design. SEP SCI TECHNOL 2022. [DOI: 10.1080/01496395.2022.2075757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Berly Robert
- Department of Textile Technology, Anna University, Chennai, India
| | - Gobi Nallathambi
- Department of Textile Technology, Anna University, Chennai, India
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11
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Tang N, Chen Y, Li Y, Yu B. 2D Polymer Nanonets: Controllable Constructions and Functional Applications. Macromol Rapid Commun 2022; 43:e2200250. [PMID: 35524950 DOI: 10.1002/marc.202200250] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 04/24/2022] [Indexed: 11/12/2022]
Abstract
Two-dimensional (2D) polymer nanonets have demonstrated great potential in various application fields due to their integrated advantages of ultrafine diameter, small pore size, high porosity, excellent interconnectivity, and large specific surface area. Here, a comprehensive overview of the controlled constructions of the polymer nanonets derived from electrospinning/netting, direct electronetting, self-assembly of cellulose nanofibers, and nonsolvent-induced phase separation is provided. Then, the widely researched multifunctional applications of polymer nanonets in filtration, sensor, tissue engineering, and electricity are also given. Finally, the challenges and possible directions for further developing the polymer nanonets are also intensively highlighted. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Ning Tang
- College of Textile Science and Engineering (International Institute of Silk), Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Yu Chen
- College of Textile Science and Engineering (International Institute of Silk), Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Yuyao Li
- School of Textile Science and Engineering, Tiangong University, Tianjin, 300387, China
| | - Bin Yu
- College of Textile Science and Engineering (International Institute of Silk), Zhejiang Sci-Tech University, Hangzhou, 310018, China
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12
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Avinash Patil N, Macchindra Gore P, Shanmugrajan D, Patil H, Kudav M, Kandasubramanian B. Functionalized non-woven surfaces for combating the spread of the COVID-19 pandemic. Interface Focus 2022; 12:20210040. [PMID: 34956609 PMCID: PMC8662388 DOI: 10.1098/rsfs.2021.0040] [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: 05/09/2021] [Accepted: 11/09/2021] [Indexed: 12/29/2022] Open
Abstract
The worldwide outbreak of SARS-CoV-2 infection has necessitated mandatory use of face masks, personal protective equipment and intake of a healthy diet for immunity boosting. As per WHO's recommendation, continuous use of masks has been proven effective in decreasing the SARS-CoV-2 infection rate. The present study reports on the bacterial filtration efficacy (BFE) of a novel 4-ply functionalized non-woven face mask. We synthesized a polypropylene-based fabric with inner layers of melt-blown fine fibres coated with polylactic acid and immune-boosting herbal phytochemicals. Experimental studies on the synthesized face mask demonstrated a BFE of greater than 99% against Staphylococcus aureus (a bacterium species frequently found in mammalian respiratory tract). A thorough computational analysis using LibDock algorithm demonstrated an effective docking performance of herbal phytochemicals against harmful virus structures. More importantly, the face mask also showed sufficient and stable breathability as per regulatory standards. A breathing resistance of 30 Pa at an aerosol flow rate of 30 l h−1 was reported under standard temperature and pressure conditions, indicating a high potential for real-world applications.
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Affiliation(s)
- Nikhil Avinash Patil
- Nanofibre and Nano Surface Texturing Laboratory, Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology, Ministry of Defence, Girinagar, Pune, Maharashtra 411025, India
| | - Prakash Macchindra Gore
- Nanofibre and Nano Surface Texturing Laboratory, Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology, Ministry of Defence, Girinagar, Pune, Maharashtra 411025, India.,Institute for Frontier Materials, Deakin University, Waurn Ponds Campus, Geelong 3216, Victoria, Australia
| | - Dhivya Shanmugrajan
- Department of Life Sciences, Altem Technologies, Platinum Partner of Dassault Systemes, Bangalore 560095, Karnataka, India
| | - Harshal Patil
- Venus Safety and Health Pvt Ltd, New Mumbai 410208, Maharashtra, India
| | - Mahesh Kudav
- Venus Safety and Health Pvt Ltd, New Mumbai 410208, Maharashtra, India
| | - Balasubramanian Kandasubramanian
- Nanofibre and Nano Surface Texturing Laboratory, Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology, Ministry of Defence, Girinagar, Pune, Maharashtra 411025, India.,Institute for Frontier Materials, Deakin University, Waurn Ponds Campus, Geelong 3216, Victoria, Australia
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13
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Wang L, Gao Y, Xiong J, Shao W, Cui C, Sun N, Zhang Y, Chang S, Han P, Liu F, He J. Biodegradable and high-performance multiscale structured nanofiber membrane as mask filter media via poly(lactic acid) electrospinning. J Colloid Interface Sci 2022; 606:961-970. [PMID: 34487943 PMCID: PMC8559669 DOI: 10.1016/j.jcis.2021.08.079] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 08/11/2021] [Accepted: 08/12/2021] [Indexed: 12/19/2022]
Abstract
The usage of single-use face masks (SFMs) has increased since the outbreak of the coronavirus pandemic. However, non-degradability and mismanagement of SFMs have raised serious environmental concerns. Moreover, both melt-blown and nanofiber-based mask filters inevitably suffer from poor filtration performance, like a continuous decrease in the removal efficiency for particulate matter (PM) and weak breathability. Herein, we report a new method to create biodegradable and reusable fibrous mask filters. The filter consists of a true nanoscale bio-based poly(lactic acid) (PLA) fiber (an average size of 37 ± 4 nm) that is fabricated via electrospinning of an extremely dilute solution. Furthermore, we designed a multiscale structure with integrated features, such as low basis weight (0.91 g m−2), small pore size (0.73 μm), and high porosity (91.72%), formed by electrospinning deposition of true nanoscale fibers on large pore of 3D scaffold nanofiber membranes. The resultant mask filter exhibited a high filtration efficiency (PM0.3–99.996%) and low pressure drop (104 Pa) superior to the commercial N95 filter. Importantly, this filter has a durable filtering efficiency for PM and natural biodegradability based on PLA. Therefore, this study offers an innovative strategy for the preparation of PLA nanofibers and provides a new design for high-performance nanofiber filters.
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Affiliation(s)
- Ling Wang
- Textile and Garment Industry of Research Institute, Zhongyuan University of Technology, Zhengzhou 450007, People's Republic of China; International Joint Laboratory of New Textile Materials and Textiles of Henan Province, Zhengzhou 450007, People's Republic of China
| | - Yanfei Gao
- Textile and Garment Industry of Research Institute, Zhongyuan University of Technology, Zhengzhou 450007, People's Republic of China; International Joint Laboratory of New Textile Materials and Textiles of Henan Province, Zhengzhou 450007, People's Republic of China.
| | - Junpeng Xiong
- Textile and Garment Industry of Research Institute, Zhongyuan University of Technology, Zhengzhou 450007, People's Republic of China; International Joint Laboratory of New Textile Materials and Textiles of Henan Province, Zhengzhou 450007, People's Republic of China
| | - Weili Shao
- Textile and Garment Industry of Research Institute, Zhongyuan University of Technology, Zhengzhou 450007, People's Republic of China; International Joint Laboratory of New Textile Materials and Textiles of Henan Province, Zhengzhou 450007, People's Republic of China.
| | - Chen Cui
- Textile and Garment Industry of Research Institute, Zhongyuan University of Technology, Zhengzhou 450007, People's Republic of China; International Joint Laboratory of New Textile Materials and Textiles of Henan Province, Zhengzhou 450007, People's Republic of China
| | - Ning Sun
- Textile and Garment Industry of Research Institute, Zhongyuan University of Technology, Zhengzhou 450007, People's Republic of China; International Joint Laboratory of New Textile Materials and Textiles of Henan Province, Zhengzhou 450007, People's Republic of China
| | - Yuting Zhang
- Textile and Garment Industry of Research Institute, Zhongyuan University of Technology, Zhengzhou 450007, People's Republic of China; International Joint Laboratory of New Textile Materials and Textiles of Henan Province, Zhengzhou 450007, People's Republic of China
| | - Shuzhen Chang
- Textile and Garment Industry of Research Institute, Zhongyuan University of Technology, Zhengzhou 450007, People's Republic of China; International Joint Laboratory of New Textile Materials and Textiles of Henan Province, Zhengzhou 450007, People's Republic of China
| | - Pengju Han
- Textile and Garment Industry of Research Institute, Zhongyuan University of Technology, Zhengzhou 450007, People's Republic of China; International Joint Laboratory of New Textile Materials and Textiles of Henan Province, Zhengzhou 450007, People's Republic of China
| | - Fan Liu
- Textile and Garment Industry of Research Institute, Zhongyuan University of Technology, Zhengzhou 450007, People's Republic of China; International Joint Laboratory of New Textile Materials and Textiles of Henan Province, Zhengzhou 450007, People's Republic of China
| | - Jianxin He
- Textile and Garment Industry of Research Institute, Zhongyuan University of Technology, Zhengzhou 450007, People's Republic of China; International Joint Laboratory of New Textile Materials and Textiles of Henan Province, Zhengzhou 450007, People's Republic of China
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14
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Lin S, Fu X, Luo M, Wang C, Zhong WH. Interface-tailored forces fluffing protein fiber membranes for high-performance filtration. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119570] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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15
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Sun W, Yang K, Wang Z, Niu M, Luo T, Su Z, Li R, Fu Q. Ultrahigh Molecular Weight Polyethylene Lamellar-Thin Framework on Square Meter Scale. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 34:e2107941. [PMID: 34794204 DOI: 10.1002/adma.202107941] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 11/08/2021] [Indexed: 02/05/2023]
Abstract
A new member of low-dimensional structures with a high aspect ratio (LDHA) is introduced. For the first time, commodity polymer is processed into LDHA, which has long been stagnated by the lack of suitable processing techniques. The key to solve the current bottleneck is to overcome the trade-off between kinetic processability and thermodynamic stability. These two factors are both highly determined by intermolecular interaction level (IIL). Thus with a wide tuning range of IIL, ultrahigh molecular weight polyethylene (UHMWPE) is selected and investigated to break through the trade-off. Polymeric LDHA preparation needs both thinning and stiffening. By focusing on one then the other sequentially, they are realized simultaneously. Thus the over sixty-year-old material is finally thinned down by seven orders of magnitude into a 65.5 nm thick and 0.64 m2 large lamellar-thin framework (LTF). LTF exhibits a series of exceptional properties such as over-95% transparency, and seven times higher specific strength referred to steel. For the first time, cryogenic electron microscopy (Cryo-EM) is utilized to observe commodity polymers directly. This new LDHA material is promising to expand the scale boundaries of both fundamental research and practical applications, not only for UHMWPE, but also for more commodity polymers to come.
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Affiliation(s)
- Weilong Sun
- College of Polymer Science & Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 P. R. China
| | - Kailin Yang
- College of Polymer Science & Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 P. R. China
| | - Zirui Wang
- College of Polymer Science & Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 P. R. China
| | - Mingze Niu
- State Key Laboratory of Biotherapy and Cancer Center Department of Geriatrics and National Clinical Research Center for Geriatrics West China Hospital Sichuan University Chengdu Sichuan 610041 P. R. China
| | - Tao Luo
- School of Chemical Engineering Sichuan University Chengdu 610065 P. R. China
| | - Zhaoming Su
- State Key Laboratory of Biotherapy and Cancer Center Department of Geriatrics and National Clinical Research Center for Geriatrics West China Hospital Sichuan University Chengdu Sichuan 610041 P. R. China
| | - Runlai Li
- College of Polymer Science & Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 P. R. China
| | - Qiang Fu
- College of Polymer Science & Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 P. R. China
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16
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Kang HK, Oh HJ, Kim JY, Kim HY, Choi YO. Effect of Process Control Parameters on the Filtration Performance of PAN-CTAB Nanofiber/Nanonet Web Combined with Meltblown Nonwoven. Polymers (Basel) 2021; 13:3591. [PMID: 34685350 PMCID: PMC8537697 DOI: 10.3390/polym13203591] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 10/08/2021] [Accepted: 10/14/2021] [Indexed: 12/03/2022] Open
Abstract
Nanofibers have potential applications as filters for particles with diameters <10 μm owing to their large specific surface area, macropores, and controllable geometry or diameter. The filtration efficiency can be increased by creating nanonets (<50 nm) whose diameter is smaller than that of nanofibers. This study investigates the effect of process conditions on the generation of nanonet structures from a polyacrylonitrile (PAN) solution containing cation surfactants; in addition, the filtration performance is analyzed. The applied electrospinning voltage and the electrostatic treatment of meltblown polypropylene (used as a substrate) are the most influential process parameters of nanonet formation. Electrospun polyacrylonitrile-cetylmethylammonium bromide (PAN-CTAB) showed a nanofiber/nanonet structure and improved thermal and mechanical properties compared with those of the electrospun PAN. The pore size distribution and filter efficiency of the PAN nanofiber web and PAN-CTAB nanofiber/nanonet web with meltblown were measured. The resulting PAN-CTAB nanofiber/nanonet air filter showed a high filtration efficiency of 99% and a low pressure drop of 7.7 mmH2O at an air flow rate of 80 L/min. The process control methods for the nanonet structures studied herein provide a new approach for developing functional materials for air-filtration applications.
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Affiliation(s)
- Hyo Kyoung Kang
- Advanced Textile R&D Department, Korea Institute of Industrial Technology, Ansan 15588, Korea; (H.K.K.); (H.J.O.); (J.Y.K.)
- Department of Organic Materials and Fiber Engineering, Jeonbuk National University, Jeonju 54896, Korea
| | - Hyun Ju Oh
- Advanced Textile R&D Department, Korea Institute of Industrial Technology, Ansan 15588, Korea; (H.K.K.); (H.J.O.); (J.Y.K.)
| | - Jung Yeon Kim
- Advanced Textile R&D Department, Korea Institute of Industrial Technology, Ansan 15588, Korea; (H.K.K.); (H.J.O.); (J.Y.K.)
| | - Hak Yong Kim
- Department of Organic Materials and Fiber Engineering, Jeonbuk National University, Jeonju 54896, Korea
- Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju 54896, Korea
| | - Yeong Og Choi
- Advanced Textile R&D Department, Korea Institute of Industrial Technology, Ansan 15588, Korea; (H.K.K.); (H.J.O.); (J.Y.K.)
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17
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Multilevel structured TPU/PS/PA-6 composite membrane for high-efficiency airborne particles capture: Preparation, performance evaluation and mechanism insights. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119392] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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18
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Fu X, Liu J, Ding C, Lin S, Zhong WH. Building bimodal structures by a wettability difference-driven strategy for high-performance protein air-filters. JOURNAL OF HAZARDOUS MATERIALS 2021; 415:125742. [PMID: 34088201 DOI: 10.1016/j.jhazmat.2021.125742] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 03/18/2021] [Accepted: 03/22/2021] [Indexed: 06/12/2023]
Abstract
Building bimodal structures for air-filters is promising to reduce the airflow resistance without sacrificing the filtration efficiency. To do so, multi-jet electrospinning is among the most broadly used methods, yet the interplay between single fibers in electrospinning, which is significant to their morphologies, is overlooked. In this study, we report a wettability difference-driven strategy to fabricate a bimodal protein fabric with superior filtration performance. We surprisingly find that only by co-spinning of two proteins, zein and gelatin, with different wettability between them, a drastic change of fiber diameters is spontaneously achieved. The generated protein-blend fabric possesses bimodally distributed diameters of 270 nm for gelatin fibers and of 1.12 µm for zein fibers; both pure protein fabrics via single-jet electrospinning have diameters unimodally distributed in the range of 500-700 nm. The bimodal protein-blend fabric delivers exceptional removal efficiencies of 99.67% for PM2.5 and 98.80% for PM0.3, yielding an ultra-low airflow resistance of 38 Pa. The PM2.5 removal efficiency retains to be 96.04% after filtering 1000 L polluted air, indicating a good long-term performance. This study brings about a new insight into fabrication of bimodal structures using multi-jet electrospinning method and promotes the development of natural products for broad applications.
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Affiliation(s)
- Xuewei Fu
- School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164, USA.
| | - Juejing Liu
- School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164, USA
| | - Chenfeng Ding
- School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164, USA; School of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Shengnan Lin
- School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164, USA
| | - Wei-Hong Zhong
- School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164, USA.
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Patil NA, Gore PM, Jaya Prakash N, Govindaraj P, Yadav R, Verma V, Shanmugarajan D, Patil S, Kore A, Kandasubramanian B. Needleless electrospun phytochemicals encapsulated nanofibre based 3-ply biodegradable mask for combating COVID-19 pandemic. CHEMICAL ENGINEERING JOURNAL (LAUSANNE, SWITZERLAND : 1996) 2021; 416:129152. [PMID: 33654455 PMCID: PMC7907737 DOI: 10.1016/j.cej.2021.129152] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 02/11/2021] [Accepted: 02/22/2021] [Indexed: 05/09/2023]
Abstract
The emergence of COVID-19 pandemic has severely affected human health and world economies. According to WHO guidelines, continuous use of face mask is mandatory for personal protection for restricting the spread of bacteria and virus. Here, we report a 3-ply cotton-PLA-cotton layered biodegradable face-mask containing encapsulated phytochemicals in the inner-filtration layer. The nano-fibrous PLA filtration layer was fabricated using needleless electrospinning of PLA & phytochemical-based herbal-extracts. This 3-layred face mask exhibits enhanced air permeability with a differential pressure of 35.78 Pa/cm2 and superior bacterial filtration efficiency of 97.9% compared to conventional face masks. Close-packed mesh structure of the nano-fibrous mat results in effective adsorption of particulate matter, aerosol particles, and bacterial targets deep inside the filtration layer. The outer hydrophobic layer of mask exhibited effective blood splash resistance up to a distance of 30 cm, ensuring its utilization for medical practices. Computational analysis of constituent phytochemicals using the LibDock algorithm predicted inhibitory activity of chemicals against the protein structured bacterial sites. The computational analysis projected superior performance of phytochemicals considering the presence of stearic acid, oleic acid, linoleic acid, and Arachidic acid exhibiting structural complementarity to inhibit targeted bacterial interface. Natural cotton fibers and PLA bio-polymer demonstrated promising biodegradable characteristics in the presence of in-house cow-dung based biodegradation slurry. Addition of jaggery to the slurry elevated the biodegradation performance, resulting in increment of change of weight from 07% to 12%. The improved performance was attributed to the increased sucrose content in biodegradation slurry, elevating the bacterial growth in the slurry. An innovative face mask has shown promising results for utilization in day-to-day life and medical frontline workers, considering the post-pandemic environmental impacts.
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Affiliation(s)
- Nikhil Avinash Patil
- Nanofibre & Nano Surface Texturing Laboratory, Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology, Ministry of Defence, Girinagar, Pune 411025, Maharashtra, India
| | - Prakash Macchindra Gore
- Nanofibre & Nano Surface Texturing Laboratory, Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology, Ministry of Defence, Girinagar, Pune 411025, Maharashtra, India
- Institute for Frontier Materials, Deakin University, Waurn Ponds Campus, Geelong 3216, Victoria, Australia
| | - Niranjana Jaya Prakash
- Nanofibre & Nano Surface Texturing Laboratory, Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology, Ministry of Defence, Girinagar, Pune 411025, Maharashtra, India
| | - Premika Govindaraj
- Materials Science and Engineering at the Factory of Future - Swinburne University of Technology, Hawthorn 3122, Victoria, Australia
| | - Ramdayal Yadav
- Institute for Frontier Materials, Deakin University, Waurn Ponds Campus, Geelong 3216, Victoria, Australia
| | - Vivek Verma
- Synthesis and Solid State Pharmaceutical Centre, Department of Chemical Sciences, Bernal Institute, University of Limerick, V94T9PX Limerick, Ireland
| | - Dhivya Shanmugarajan
- Department of Life Sciences, Altem Technologies, Platinum Partner of Dassault Systemes, Bangalore 560095, Karnataka, India
| | - Shivanand Patil
- Siddheshwar Techtessile Pvt. Ltd., Kolhapur 416012, Maharashtra, India
| | - Abhay Kore
- Siddheshwar Techtessile Pvt. Ltd., Kolhapur 416012, Maharashtra, India
| | - Balasubramanian Kandasubramanian
- Nanofibre & Nano Surface Texturing Laboratory, Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology, Ministry of Defence, Girinagar, Pune 411025, Maharashtra, India
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20
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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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21
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Lu T, Cui J, Qu Q, Wang Y, Zhang J, Xiong R, Ma W, Huang C. Multistructured Electrospun Nanofibers for Air Filtration: A Review. ACS APPLIED MATERIALS & INTERFACES 2021; 13:23293-23313. [PMID: 33974391 DOI: 10.1021/acsami.1c06520] [Citation(s) in RCA: 114] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Air filtration materials (AFMs) have gradually become a research hotspot on account of the increasing attention paid to the global air quality problem. However, most AFMs cannot balance the contradiction between high filtration efficiency and low pressure drop. Electrospinning nanofibers have a large surface area to volume ratio, an adjustable porous structure, and a simple preparation process that make them an appropriate candidate for filtration materials. Therefore, electrospun nanofibers have attracted increased attention in air filtration applications. In this paper, first, the preparation methods of high-performance electrospun air filtration membranes (EAFMs) and the typical surface structures and filtration principles of electrospun fibers for air filtration are reviewed. Second, the research progress of EAFMs with multistructures, including nanoprotrusion, wrinkled, porous, branched, hollow, core-shell, ribbon, beaded, nets structure, and the application of these nanofibers in air filtration are summarized. Finally, challenges with the fabrication of EAFMs, limitations of their use, and trends for future developments are presented.
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Affiliation(s)
- Tao Lu
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent) College of Chemical Engineering Nanjing Forestry University (NFU), Nanjing 210037, P. R. China
| | - Jiaxin Cui
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent) College of Chemical Engineering Nanjing Forestry University (NFU), Nanjing 210037, P. R. China
| | - Qingli Qu
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent) College of Chemical Engineering Nanjing Forestry University (NFU), Nanjing 210037, P. R. China
| | - Yulin Wang
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent) College of Chemical Engineering Nanjing Forestry University (NFU), Nanjing 210037, P. R. China
| | - Jian Zhang
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent) College of Chemical Engineering Nanjing Forestry University (NFU), Nanjing 210037, P. R. China
| | - Ranhua Xiong
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent) College of Chemical Engineering Nanjing Forestry University (NFU), Nanjing 210037, P. R. China
| | - Wenjing Ma
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent) College of Chemical Engineering Nanjing Forestry University (NFU), Nanjing 210037, P. R. China
| | - Chaobo Huang
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent) College of Chemical Engineering Nanjing Forestry University (NFU), Nanjing 210037, P. R. China
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22
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Lou Y, Ding S, Wang B, Wang J, Sun Q, Jin X, Li X. Controllable morphology of electrospun nanofiber membranes with tunable groove structure and the enhanced filtration performance for ultrafine particulates. NANOTECHNOLOGY 2021; 32:315708. [PMID: 33862612 DOI: 10.1088/1361-6528/abf8da] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 04/16/2021] [Indexed: 06/12/2023]
Abstract
As researchers are striving to develop high-performance filtration membranes with hierarchical micro/nano structures, the challenges and costs of processing often limit creative innovation. Here, we propose a polyethersulfone/polyacrylonitrile (PES/PAN) nanofiber membrane with groove structure by electrospinning and facile post-processing. The resulted membrane can form a groove structure on the surface of the fiber after being soaked in chloroform, thereby increasing the collision probability and extending the residence time for ultrafine particulates and improving the filtration efficiency. The groove structure can be attributed to the solubility of PES constituent in chloroform, while PAN constituent will not be dissolved, thus forming a high-performance nanofiber membrane with high filtration efficiency (ca. 99.54%) and withstand pressure drop (ca. 133.9 Pa) for dioctyl phthalate aerosol particles with diameter of 0.3μm. The results show that this convenient and low-cost fabrication technology can be used to prepare high-performance nanofiber membrane based air filters that have broad application prospects in respiratory protective equipment.
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Affiliation(s)
- Yaoyuan Lou
- School of Materials Science & Engineering, Beijing Institute of Fashion Technology, Beijing 100029, People's Republic of China
| | - Shanshan Ding
- School of Materials Science & Engineering, Beijing Institute of Fashion Technology, Beijing 100029, People's Republic of China
| | - Bin Wang
- School of Materials Science & Engineering, Beijing Institute of Fashion Technology, Beijing 100029, People's Republic of China
- Beijing Key Laboratory of Clothing Materials R & D and Assessment, Beijing Engineering Research Center of Textile Nanofiber, Beijing Institute of Fashion Technology, Beijing 100029, People's Republic of China
| | - Jie Wang
- School of Materials Science & Engineering, Beijing Institute of Fashion Technology, Beijing 100029, People's Republic of China
| | - Qing Sun
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou Zhejiang, 310014, People's Republic of China
| | - Xu Jin
- School of Materials Science & Engineering, Beijing Institute of Fashion Technology, Beijing 100029, People's Republic of China
| | - Xiuyan Li
- School of Materials Science & Engineering, Beijing Institute of Fashion Technology, Beijing 100029, People's Republic of China
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23
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Lab-scale design of two layers wood cellulose filter media to maximize life span for intake air filtration. Sci Rep 2021; 11:3153. [PMID: 33542441 PMCID: PMC7862255 DOI: 10.1038/s41598-021-82855-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 01/21/2021] [Indexed: 11/25/2022] Open
Abstract
The requirement of continuous and stringent growth on filtration performance, including longer life span, higher overall efficiency, lower initial pressure drop and more cost effective, has still drove filter media manufactures to research and develop. One of the possible way to achieve these challenges, was to utilize a dual-channel head-box with two sets of pulp conveying system, which can produce filter media with bulky and gradient properties. In this study, three kinds of commercial cellulose were chosen to make two layers filtration media, analyzed the effect of fiber blend on physical properties and filtration performance. By fine-tune the slurry ratio of top layer, we made one single layer and two layers composition filter media, the thickness and air permeability of composition media were higher than single layer media. According to ISO 5011, filtration performance test has been done to compare single layer media with composition media, this composition gradient profiles that provided the life span 37.0% improvement to the terminal pressure drop during dust injecting, and the dust hold capacity improved 34.7%, the main contributor of dust hold capacity was decided by top layer, however, the overall efficiency was depended on wire side layer.
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24
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Anstey A, Chang E, Kim ES, Rizvi A, Kakroodi AR, Park CB, Lee PC. Nanofibrillated polymer systems: Design, application, and current state of the art. Prog Polym Sci 2021. [DOI: 10.1016/j.progpolymsci.2020.101346] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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25
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Saudi S, Bhattarai SR, Adhikari U, Khanal S, Sankar J, Aravamudhan S, Bhattarai N. Nanonet-nano fiber electrospun mesh of PCL-chitosan for controlled and extended release of diclofenac sodium. NANOSCALE 2020; 12:23556-23569. [PMID: 33135713 DOI: 10.1039/d0nr05968d] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Electrospun nanofiber (EN) technology has been used in the past to generate electrostatically charged multilayer-nanofibers. This platform offers versatile applications including in tissue engineering, drug delivery, wound dressings, and high-efficiency particulate air filters. In this study, we synthesized for the first time nanonet-nanofiber electrospun meshes (NNEMs) of polycaprolactone (PCL)-chitosan (CH) using EN technology. The fabricated NNEMs were utilized for high payload delivery and controlled release of a water-soluble drug. Diclofenac Sodium (DS), a hydrophilic anti-inflammatory drug, was selected as a model drug because of its high aqueous solubility and poor compatibility with insoluble polymers. Various compositions of DS drug-loaded NNEMs (DS-NNEMs) were synthesized. The physicochemical properties such as structure, morphology, and aqueous stability and the chemical properties of DS-NNEMs were evaluated. High drug entrapment efficiency and concentration-dependent drug release patterns were investigated for up to 14 days. Furthermore, the biocompatibility of the DS-NNEMs was tested with NIH 3T3 cells. The physicochemical characterization results showed that the DS drug is a key contributing factor in the generation of nanonet-nanofiber networks during electrospinning. DS-NNEMs also enhanced 3T3 cell adhesion, viability, and proliferation in the nanonet-nano fiber network through the controlled release of DS. The presented EN technology-based biodegradable NNEM material is not only limited for the controlled release of hydrophilic anti-inflammatory drugs, but also can be a suitable platform for loading and release of antiviral drugs.
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Affiliation(s)
- Sheikh Saudi
- Department of Nanoengineering, Joint School of Nanoscience and Nanoengineering, North Carolina A&T State University, Greensboro, NC 27401, USA
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26
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Wong BJF, Hakimi AA, Elghobashi S. Smoke Evacuator Use with Ultra-Low Particulate Air Filtration in Rhinoplasty and Sinus Surgery. Facial Plast Surg Aesthet Med 2020; 22:404-405. [PMID: 33180638 DOI: 10.1089/fpsam.2020.0434] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Brian J F Wong
- Beckman Laser Institute and Medical Clinic, University of California Irvine, Irvine, California, USA.,Department of Biomedical Engineering, Samueli School of Engineering, University of California Irvine, Irvine, California, USA.,Department of Otolaryngology-Head and Neck Surgery, University of California Irvine Medical Center, Orange, California, USA
| | - Amir A Hakimi
- Beckman Laser Institute and Medical Clinic, University of California Irvine, Irvine, California, USA
| | - Said Elghobashi
- Department of Mechanical and Aerospace Engineering, Samueli School of Engineering, University of California Irvine, Irvine, California, USA
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27
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Ko K, Yang SC. Magnetoelectric Membrane Filters of Poly(vinylidene fluoride)/Cobalt Ferrite Oxide for Effective Capturing of Particulate Matter. Polymers (Basel) 2020; 12:E2601. [PMID: 33167528 PMCID: PMC7694521 DOI: 10.3390/polym12112601] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 10/31/2020] [Accepted: 11/04/2020] [Indexed: 01/25/2023] Open
Abstract
In the last decade, particulate matter (PM) has gradually become a serious public health issue due to its harmful impact on the human body. In this study, we report a novel filtration system for high PM capturing, based on the magnetoelectric (ME) effect that induces an effective surface charge in membrane filters. To elucidate the ME effect on PM capturing, we prepared electrospun poly(vinylidene fluoride)(PVDF)/CoFe2O4(CFO) membranes and investigated their PM capturing efficiency. After electrical poling under a high electric field of 10 kV/mm, PM-capturing efficiencies of the poled-PVDF/CFO membrane filters were improved with carbon/fluorine(C/F) molar ratios of C/F = 4.81 under Hdc = 0 and C/F = 7.01 under Hdc = 700 Oe, respectively. The result illustrates that electrical poling and a dc magnetic field could, respectively, enhance the surface charge of the membrane filters through (i) a strong beta-phase alignment in PVDF (poling effect) and (ii) an efficient shape change of PVDF/CFO membranes (magnetostriction effect). The diffusion rate of a water droplet on the PVDF/CFO membrane surface is reduced from 0.23 to 0.05 cm2/s by covering the membrane surface with PM. Consequently, the PM capturing efficiency is dramatically improved up to 175% from ME membranes with the poling process and applying a magnetic field. Furthermore, the PM was successfully captured on the prototype real mask derived from the magnetoelectric effect induced by a permanent magnet with a diameter of 2 cm without any external power.
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Affiliation(s)
| | - Su-Chul Yang
- Department of Chemical Engineering (BK21 FOUR), Dong-A University, Busan 49315, Korea;
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28
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Liu J, Ding C, Dunne FO, Guo Y, Fu X, Zhong WH. A Bimodal Protein Fabric Enabled via In Situ Diffusion for High-Performance Air Filtration. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:12042-12050. [PMID: 32936622 DOI: 10.1021/acs.est.0c02828] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Design and fabrication of bimodal structures are essential for successful development of advanced air filters with ultralow airflow resistance. To realize this goal, simplified processing procedures are necessary for meeting the practical needs. Here, a bimodal protein fabric with high-performance air filtration, and effectively lowered airflow resistance is reported. The various functional groups of proteins provide versatile interactions with pollutants. By utilizing a novel and cost-effective "cross-axial" configuration with an optimized condition (75° of contacting angle between solution nozzle and cospinning solvent nozzle), the diffusion in Taylor cone is in situ controlled, which results in the successful production of bimodal protein fabric. The bimodal protein fabric (16.7 g/m2 areal density) is demonstrated to show excellent filtration performance for removing particulate matter (PM) pollutants and only causes 17.1 Pa air pressure drop. The study of multilayered protein fabric air filters shows a further improvement in filtration performance of removing 97% of PM0.3 and 99% of PM2.5 with a low airflow resistance (34.9 Pa). More importantly, the four-layered bimodal protein fabric shows an exceptional long-term performance and maintains a high removal efficiency in the humid environment. This study presents an effective and viable strategy for fabricating bimodal fibrous materials for advanced air filtration.
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Affiliation(s)
- Juejing Liu
- School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Chenfeng Ding
- School of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Francis O Dunne
- School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Yiran Guo
- School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Xuewei Fu
- School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Wei-Hong Zhong
- School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
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29
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Choy S, Moon H, Park Y, Jung YM, Koo JM, Oh DX, Hwang DS. Mechanical properties and thermal stability of intermolecular-fitted poly(vinyl alcohol)/α-chitin nanofibrous mat. Carbohydr Polym 2020; 244:116476. [DOI: 10.1016/j.carbpol.2020.116476] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 05/13/2020] [Accepted: 05/17/2020] [Indexed: 10/24/2022]
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30
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Jung S, Kim J. Advanced Design of Fiber-Based Particulate Filters: Materials, Morphology, and Construction of Fibrous Assembly. Polymers (Basel) 2020; 12:E1714. [PMID: 32751674 PMCID: PMC7464808 DOI: 10.3390/polym12081714] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 07/27/2020] [Accepted: 07/28/2020] [Indexed: 11/24/2022] Open
Abstract
With increasing air pollution and sporadic outbreaks of epidemics, there is ramping attention on the filtration devices. The main constituents of airborne pollutants are particulate matters of solid particles, liquid aerosol, bioaerosol/bio-droplets, and gas/vapor. With the growing demand for high-performance filters, novel materials and functionalities are being developed applying advanced technologies. In this paper, recent developments of fiber-based particulate filters are reviewed, with a focus on the important performance parameters and material properties. Trends in technology and research activities are briefly reviewed, and the evaluative measures of filtration performance are reported. Recent studies on the advanced filter materials are reviewed in the aspect of polymers and the fabrication process of fibrous assembly. The characterization method including 3D modeling and simulation is also briefly introduced. Multifunctional filters such as antimicrobial filter and gas and particulate filters are briefly introduced, and efforts for developing environmentally sustainable filters are noted.
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Affiliation(s)
- Seojin Jung
- Department of Textiles, Merchandising and Fashion Design, Seoul National University, Seoul 08826, Korea;
| | - Jooyoun Kim
- Department of Textiles, Merchandising and Fashion Design, Seoul National University, Seoul 08826, Korea;
- Research Institute of Human Ecology, Seoul National University, Seoul 08826, Korea
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31
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Serra DS, de Souza KCL, Naidu ST, de Lima JR, de Lima Gondim F, Gomes MDM, Araújo RDS, de Oliveira MLM, Cavalcante FSÁ. Lung injury caused by exposure to the gaseous fraction of exhaust from biomass combustion (cashew nut shells): a mice model. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:9568-9581. [PMID: 31919820 DOI: 10.1007/s11356-019-07576-8] [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: 07/04/2019] [Accepted: 12/29/2019] [Indexed: 06/10/2023]
Abstract
Currently, to reduce the use of nonrenewable energy sources in energy matrices, some industries have already incorporated biomass as a source of energy for their processes. Additionally, filters are used in an attempt to retain the particulate matter present in exhaust gases. In this work, the emission gases of a cashew nut shell (CNS) combustion reactor and the deleterious effects on the respiratory system of mice exposed to gaseous fraction present in CNS emissions (GF-CNS) are analyzed. The system for CNS combustion is composed of a cylindrical stainless steel burner, and exhaust gases generated by CNS combustion were directed through a chimney to a system containing two glass fiber filters to retain all the PM present in the CNS exhaust and, posteriorly, were directed to a mice exposure chamber. The results show changes in the variables of respiratory system mechanics (G, H, CST, IC, and PV loop area) in oxidative stress (SOD, CAT, and NO2-), as well as in the histopathological analysis and lung morphometry (alveolar collapse, PMN cells, mean alveolar diameter, and BCI). Through our results, it has been demonstrated that even with the use of filters by industries for particulate material retention, special attention should still be given to the gaseous fraction that is released into the environment.
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Affiliation(s)
- Daniel Silveira Serra
- Science and Technology Center, State University of Ceará, Av. Dr. Silas Munguba, 1700, Fortaleza, CE, 60714-903, Brazil.
| | | | | | - Jéssica Rocha de Lima
- Department of Chemistry and Environment, Federal Institute of Ceará, Fortaleza, CE, Brazil
| | | | | | | | - Mona Lisa Moura de Oliveira
- Science and Technology Center, State University of Ceará, Av. Dr. Silas Munguba, 1700, Fortaleza, CE, 60714-903, Brazil
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32
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Affiliation(s)
- Arun Karthick Selvam
- Department of Biomedical Engineering, SSN College of Engineering, Chennai, India
- Department of Textile Technology, Anna University, Chennai, India
| | - Devi Baskar
- Department of Textile Technology, Anna University, Chennai, India
| | - Gobi Nallathambi
- Department of Textile Technology, Anna University, Chennai, India
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33
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Vasireddi R, Kruse J, Vakili M, Kulkarni S, Keller TF, Monteiro DCF, Trebbin M. Solution blow spinning of polymer/nanocomposite micro-/nanofibers with tunable diameters and morphologies using a gas dynamic virtual nozzle. Sci Rep 2019; 9:14297. [PMID: 31586141 PMCID: PMC6778068 DOI: 10.1038/s41598-019-50477-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Accepted: 09/12/2019] [Indexed: 12/31/2022] Open
Abstract
Uniform endless fibers are ubiquitous and their applications range from functional textiles over biomedical engineering to high-performance filtering and drug delivery systems. Here, we report a new method for the direct, reproducible fabrication of uniform polymer and composite micro-/nanofibers using a microfluidic gas flow focusing nozzle (Gas Dynamic Virtual Nozzle (GDVN)) relinquishing the need for external fiber pulling mechanisms. Compared to other methods, this technique is inexpensive, user-friendly and permits precise fiber diameter control (~250 nm to ~15 µm), high production rate (m/s-range) and direct fiber deposition without clogging due to stable, gas-focused jetting. Control over shape (flat or round) and surface patterning are achieved by simply tuning the air pressure and polymer concentration. The main thinning process happens after the polymer exits the device and is, therefore, mostly independent of the nozzle's internal geometry. Nevertheless, the lithography-based device design is versatile, allowing for precise flow-field control for operation stability as well as particle alignment control. As an example, we demonstrate the successful production of endless hematite nanocomposite fibers which highlights this technology's exciting possibilities that can lead to the fabrication of multifunctional/stimuli-responsive fibers with thermal and electrical conductivity, magnetic properties and enhanced mechanical stability.
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Affiliation(s)
- Ramakrishna Vasireddi
- The Hamburg Center for Ultrafast Imaging (CUI), University of Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany
| | - Joscha Kruse
- The Hamburg Center for Ultrafast Imaging (CUI), University of Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany
- Donostia International Physics Center (DIPC), Manuel Lardizabal Ibilbidea 4, 20018, San Sebastian, Spain
| | - Mohammad Vakili
- The Hamburg Center for Ultrafast Imaging (CUI), University of Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany
| | | | - Thomas F Keller
- Deutsches Elektronen-Synchrotron (DESY), 22607, Hamburg, Germany
- Department of Physics, University of Hamburg, 20355, Hamburg, Germany
| | - Diana C F Monteiro
- The Hamburg Center for Ultrafast Imaging (CUI), University of Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany
| | - Martin Trebbin
- Department of Chemistry, The State University of New York, University at Buffalo, 760 Natural Sciences Complex, Buffalo, New York, 14260-3000, USA.
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Wang B, Sun Z, Sun Q, Wang J, Du Z, Li C, Li X. The preparation of bifunctional electrospun air filtration membranes by introducing attapulgite for the efficient capturing of ultrafine PMs and hazardous heavy metal ions. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 249:851-859. [PMID: 30954833 DOI: 10.1016/j.envpol.2019.03.122] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 03/28/2019] [Accepted: 03/29/2019] [Indexed: 05/29/2023]
Abstract
The comprehensive sources of particulate matter (PM) require air purification materials to possess both high filtration efficiencies and low air resistances in an effort to provide healthcare. However, the assembly of multiple-layered filters with different functions leads to high pressure drop and high operating cost. Therefore, a multifunctional air filter that can provide excellent air filtration capacity and healthcare is highly desired. Here, a novel bifunctional polyacrylonitrile/attapulgite hierarchical-structured filter with low air resistance and high adsorption capacity was designed and fabricated by embedding attapulgite nanorods during a facile electrospinning process. The hierarchical polyacrylonitrile/attapulgite membranes showed only a ∼64 Pa resistance for 0.1 μm PM. Another benefit of using the attapulgite nanorods is an adsorption effect for hazardous heavy metal ions that accompany airborne ultrafine PMs. Thereby this hierarchical membrane simultaneously exhibits an enhanced filtration performance and hazardous protection ability. Furthermore, due to the electret effect of the attapulgite nanorods, the surface potential of the membrane remains at above 2.2 kV after 600 min of continuous use, which could improve the air filtration efficiency and ensure the long-term service life of the filters. This work may provide a new approach for the design and development of multifunctional air filters for simultaneously capturing ultrafine PMs and any other accompanying hazardous chemicals.
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Affiliation(s)
- Bin Wang
- School of Materials Science & Engineering, Beijing Institute of Fashion Technology, Beijing, 100029, China; Beijing Key Laboratory of Clothing Materials R & D and Assessment, Beijing Engineering Research Center of Textile Nanofiber, Beijing Institute of Fashion Technology, Beijing, 100029, China
| | - Zhiming Sun
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China
| | - Qing Sun
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Jie Wang
- School of Materials Science & Engineering, Beijing Institute of Fashion Technology, Beijing, 100029, China
| | - Zongxi Du
- School of Materials Science & Engineering, Beijing Institute of Fashion Technology, Beijing, 100029, China
| | - Congju Li
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Xiuyan Li
- School of Materials Science & Engineering, Beijing Institute of Fashion Technology, Beijing, 100029, China.
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35
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Wang R, Li Y, Si Y, Wang F, Liu Y, Ma Y, Yu J, Yin X, Ding B. Rechargeable polyamide-based N-halamine nanofibrous membranes for renewable, high-efficiency, and antibacterial respirators. NANOSCALE ADVANCES 2019; 1:1948-1956. [PMID: 36134243 PMCID: PMC9418896 DOI: 10.1039/c9na00103d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 03/24/2019] [Indexed: 05/25/2023]
Abstract
Emerging infectious diseases (EIDs) have been acknowledged as a major public health concern worldwide. Unfortunately, most protective respirators used to prevent EID transmission suffer from the disadvantage of lacking antimicrobial activity, leading to an increased risk of cross-contamination and post-infection. Herein, we report a novel and facile strategy to fabricate rechargeable and biocidal air filtration materials by creating advanced N-halamine structures based on electrospun polyamide (PA) nanofibers. Our approach can endow the resultant nanofibrous membranes with powerful biocidal activity (6 log CFU reduction against E. coli), an ultrahigh fine particle capture efficiency of 99.999% (N100 level for masks), and can allow the antibacterial efficacy and air filtration performance to be renewed in a one-step chlorination process, which has never been reported before. More importantly, for the first time, we revealed the synergistic effect involving the intrinsic structure of polymers and the assembling structure of nanofibers on the chlorination capacity. The successful fabrication of such a fascinating membrane can provide new insights into the development of nanofibrous materials in a multifunctional, durable, and renewable form.
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Affiliation(s)
- Ru Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University Shanghai 201620 China
| | - Yuyao Li
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University Shanghai 201620 China
| | - Yang Si
- Innovation Center for Textile Science and Technology, Donghua University Shanghai 200051 China
| | - Fei Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University Shanghai 201620 China
| | - Yitao Liu
- Innovation Center for Textile Science and Technology, Donghua University Shanghai 200051 China
| | - Ying Ma
- Innovation Center for Textile Science and Technology, Donghua University Shanghai 200051 China
| | - Jianyong Yu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University Shanghai 201620 China
- Innovation Center for Textile Science and Technology, Donghua University Shanghai 200051 China
| | - Xia Yin
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University Shanghai 201620 China
- Innovation Center for Textile Science and Technology, Donghua University Shanghai 200051 China
| | - Bin Ding
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University Shanghai 201620 China
- Innovation Center for Textile Science and Technology, Donghua University Shanghai 200051 China
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36
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Zhang H, Liu J, Zhang X, Huang C, Zhang Y, Fu Y, Jin X. Design of three‐dimensional gradient nonwoven composites with robust dust holding capacity for air filtration. J Appl Polym Sci 2019. [DOI: 10.1002/app.47827] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Haifeng Zhang
- College of Textile and ClothingNantong University Nantong 226019 Jiangsu China
| | - Jinxin Liu
- Engineering Research Center of Technical Textiles, Ministry of EducationDonghua University Shanghai 201620 China
| | - Xing Zhang
- Engineering Research Center of Technical Textiles, Ministry of EducationDonghua University Shanghai 201620 China
| | - Chen Huang
- Engineering Research Center of Technical Textiles, Ministry of EducationDonghua University Shanghai 201620 China
| | - Yu Zhang
- College of Textile and ClothingNantong University Nantong 226019 Jiangsu China
| | - Yijun Fu
- College of Textile and ClothingNantong University Nantong 226019 Jiangsu China
| | - Xiangyu Jin
- Engineering Research Center of Technical Textiles, Ministry of EducationDonghua University Shanghai 201620 China
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37
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Li X, Wang C, Huang X, Zhang T, Wang X, Min M, Wang L, Huang H, Hsiao BS. Anionic Surfactant-Triggered Steiner Geometrical Poly(vinylidene fluoride) Nanofiber/Nanonet Air Filter for Efficient Particulate Matter Removal. ACS APPLIED MATERIALS & INTERFACES 2018; 10:42891-42904. [PMID: 30427661 DOI: 10.1021/acsami.8b16564] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The emergence of Steiner minimal tree is of fundamental importance, and designing such geometric structure and developing its application have practical effect in material engineering and biomedicine. We used a cutting-edge nanotechnology, electrospinning/netting, to generate a Steiner geometrical poly(vinylidene fluoride) (PVDF) nanofiber/nanonet filter for removing airborne particulate matter (PM). Manipulation of surface morphologies by precise control of charged situation enabled the creation of two-dimensional nanonets with Steiner geometry. A significant crystalline phase transition of PVDF from α-phase to β-phase was triggered by the dipole orientation and the intermolecular interactions derived from the electrostatic potential analysis. Particularly, the synergy of electrical interaction (ion-dipole and dipole-dipole) and hydrophobic interaction facilitated the formation of Steiner geometric structure during the evolution process of nanonets. The resultant PVDF nanofiber/nanonet air filter exhibited high filtration efficiency of 99.985% and low pressure drop of 66.7 Pa under the airflow velocity of 32 L/min for PM0.26 removal by the safest physical sieving mechanism. Furthermore, such filter possessed robust structure integrity for reusability, comparable optical transmittance, superior thermal stability, and prominent purification capacity for smoke PM2.5. The successful construction of such fascinating Steiner geometrical PVDF nanonets will provide new insights into the design and exploitation of novel filter media for air cleaning and haze treatment.
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Affiliation(s)
- Xiong Li
- Key Laboratory of Oceanic and Polar Fisheries, Ministry of Agriculture and Rural Affairs, East China Sea Fisheries Research Institute , Chinese Academy of Fishery Sciences , Shanghai 200090 , PR China
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering , Donghua University , Shanghai 201620 , PR China
| | - Ce Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering , Donghua University , Shanghai 201620 , PR China
| | - Xiaohua Huang
- Key Laboratory of Open-Sea Fishery Development , Ministry of Agriculture and Rural Affairs , Guangzhou 510300 , PR China
| | - Tonghui Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering , Donghua University , Shanghai 201620 , PR China
| | - Xuefen Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering , Donghua University , Shanghai 201620 , PR China
| | - Minghua Min
- Key Laboratory of Oceanic and Polar Fisheries, Ministry of Agriculture and Rural Affairs, East China Sea Fisheries Research Institute , Chinese Academy of Fishery Sciences , Shanghai 200090 , PR China
| | - Lumin Wang
- Key Laboratory of Oceanic and Polar Fisheries, Ministry of Agriculture and Rural Affairs, East China Sea Fisheries Research Institute , Chinese Academy of Fishery Sciences , Shanghai 200090 , PR China
| | - Hongliang Huang
- Key Laboratory of Oceanic and Polar Fisheries, Ministry of Agriculture and Rural Affairs, East China Sea Fisheries Research Institute , Chinese Academy of Fishery Sciences , Shanghai 200090 , PR China
| | - Benjamin S Hsiao
- Department of Chemistry , Stony Brook University , Stony Brook , New York 11794-3400 , United States
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38
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Yi Z, Cheng P, Chen J, Liu K, Liu Q, Li M, Zhong W, Wang W, Lu Z, Wang D. PVA-co-PE Nanofibrous Filter Media with Tailored Three-Dimensional Structure for High Performance and Safe Aerosol Filtration via Suspension-Drying Procedure. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b02523] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Zhibing Yi
- Hubei Key Laboratory of Advanced Textile Materials & Application, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials & Application, Wuhan Textile University, Wuhan 430200, China
| | - Pan Cheng
- Hubei Key Laboratory of Advanced Textile Materials & Application, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials & Application, Wuhan Textile University, Wuhan 430200, China
| | - Jiahui Chen
- Hubei Key Laboratory of Advanced Textile Materials & Application, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials & Application, Wuhan Textile University, Wuhan 430200, China
| | - Ke Liu
- Hubei Key Laboratory of Advanced Textile Materials & Application, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials & Application, Wuhan Textile University, Wuhan 430200, China
| | - Qiongzhen Liu
- Hubei Key Laboratory of Advanced Textile Materials & Application, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials & Application, Wuhan Textile University, Wuhan 430200, China
| | - Mufang Li
- Hubei Key Laboratory of Advanced Textile Materials & Application, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials & Application, Wuhan Textile University, Wuhan 430200, China
| | - Weibing Zhong
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| | - Wenwen Wang
- Hubei Key Laboratory of Advanced Textile Materials & Application, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials & Application, Wuhan Textile University, Wuhan 430200, China
| | - Zhentan Lu
- Hubei Key Laboratory of Advanced Textile Materials & Application, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials & Application, Wuhan Textile University, Wuhan 430200, China
| | - Dong Wang
- Hubei Key Laboratory of Advanced Textile Materials & Application, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials & Application, Wuhan Textile University, Wuhan 430200, China
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
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39
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Rahimi M, Mokhtari J. Modeling and optimization of waterproof-breathable thermo-regulating core-shell nanofiber/net structured membrane for protective clothing applications. POLYM ENG SCI 2018. [DOI: 10.1002/pen.24776] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Massoumeh Rahimi
- Department of Textile Engineering, Faculty of Engineering; University of Guilan; Guilan Province 4199613776 Iran
| | - Javad Mokhtari
- Department of Textile Engineering, Faculty of Engineering; University of Guilan; Guilan Province 4199613776 Iran
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40
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Xu H, Jin W, Wang F, Li C, Wang J, Zhu H, Guo Y. Preparation and properties of PTFE hollow fiber membranes for the removal of ultrafine particles in PM2.5 with repetitive usage capability. RSC Adv 2018; 8:38245-38258. [PMID: 35559087 PMCID: PMC9089834 DOI: 10.1039/c8ra07789d] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 10/26/2018] [Indexed: 12/13/2022] Open
Abstract
This study reveals the first attempt to apply PTFE hollow fiber membranes for removing ultrafine particles in PM2.5. The asymmetric polytetrafluoroethylene (PTFE) hydrophobic hollow fiber membranes were prepared through a cold pressing method including paste extrusion, stretching and heating. The reduction ratio, stretching ratio and heating temperature have influences on the morphology, structure, porosity, shrinkage ratio, tensile strength and permeability of the PTFE hollow fiber membranes. The morphological properties of the PTFE hollow fiber membrane were studied using field emission scanning electron microscopy (FESEM). The increase of stretching ratio can improve the pore size and porosity of the hollow membrane, but be negative for the mechanical properties. By changing the reduction ratio we can obtain different inner diameter PTFE hollow fiber membranes. Finally, the PTFE hollow fiber membranes were tested for their performances in the removal of ultrafine particles in PM2.5. The PTFE hollow fiber membranes had the microstructure of nodes interconnected by fibrils, designed to possess the synergistic advantages of porous filters and fibrous filters with a sieve-like outer surface and a fibrous-like porous substrate. Under dead-end filtration, the filtration efficiency is related to the wall thickness, pore size and porosity of the membranes. The air filtration achieved was higher than 99.99% for PM2.5 and 90% for PM0.3, indicating that all the prepared PTFE hollow fiber membranes exhibited satisfactory removal of ultrafine particles performances. Because of the hydrophobicity, PTFE hollow fiber membranes have self-cleaning ability and a large dust-holding capacity of >120 g m−2, slowing down membrane fouling. The fouled filter media after washing retained a high filtration efficiency without obvious deterioration. The hydrophobic PTFE hollow fiber membranes developed in this work exhibited potential applications in air filtration. This study reveals the first attempt to apply PTFE hollow fiber membranes for removing ultrafine particles in PM2.5.![]()
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Affiliation(s)
- Huan Xu
- Zhejiang Provincial Key Laboratory of Fiber Materials and Manufacturing Technology
- Zhejiang Sci-Tech University
- Hangzhou
- China
| | - Wangyong Jin
- Zhejiang Dong Da Environment Engineering CO., LTD
- Zhuji 311800
- China
| | - Feng Wang
- Zhejiang Provincial Key Laboratory of Fiber Materials and Manufacturing Technology
- Zhejiang Sci-Tech University
- Hangzhou
- China
- Zhejiang Kertice Hi-Tech Fluor-Material Co., LTD
| | - Chengcai Li
- Zhejiang Provincial Key Laboratory of Fiber Materials and Manufacturing Technology
- Zhejiang Sci-Tech University
- Hangzhou
- China
| | - Jieqi Wang
- Zhejiang Provincial Key Laboratory of Fiber Materials and Manufacturing Technology
- Zhejiang Sci-Tech University
- Hangzhou
- China
| | - Hailin Zhu
- Zhejiang Provincial Key Laboratory of Fiber Materials and Manufacturing Technology
- Zhejiang Sci-Tech University
- Hangzhou
- China
- Zhejiang Kertice Hi-Tech Fluor-Material Co., LTD
| | - Yuhai Guo
- Zhejiang Provincial Key Laboratory of Fiber Materials and Manufacturing Technology
- Zhejiang Sci-Tech University
- Hangzhou
- China
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41
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Zuo F, Zhang S, Liu H, Fong H, Yin X, Yu J, Ding B. Free-Standing Polyurethane Nanofiber/Nets Air Filters for Effective PM Capture. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1702139. [PMID: 29044916 DOI: 10.1002/smll.201702139] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 08/16/2017] [Indexed: 05/26/2023]
Abstract
The filtration performance and light transmittance of nanofiber air filters are restricted by their thick fiber diameter, large pore size, and substrate dependence, which can be solved by constructing substrate-free fibrous membranes with true nanoscale diameters and ultrathin thicknesses, however, it has proven to be extremely challenging. Herein, a roust approach is presented to create free-standing polyurethane (PU) nanofiber/nets air filters composed of bonded nanofibers and 2D nanonets for particular matter (PM) capture via combining electrospinning/netting technique and facile peel off process from designed substrates. This strategy causes widely distributed Steiner-tree structured nanonets with diameters of ≈20 nm and bonded scaffold nanofibers to assemble into ultrathin membranes with small pore size, high porosity, and robust mechanical strength on a large scale based on ionic liquid inspiration and surface structure optimization of receiver substrates. As a consequence, the resulting free-standing PU nanofiber/nets filters exhibit high PM1-0.5 removal efficiency of >99.00% and PM2.5-1 removal efficiency of >99.73%, maintaining high light transmittance of ≈70% and low pressure drop of 28 Pa; even achieve >99.97% removal efficiency with ≈40% transmittance for PM0.3 filtration, and robust purification capacity for real smoke PM2.5 , making them promising high-efficiency and transparent filtration materials for various filtration and separation applications.
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Affiliation(s)
- Fenglei Zuo
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai, 201620, China
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai, 200051, China
| | - Shichao Zhang
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai, 200051, China
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Hui Liu
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai, 201620, China
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai, 200051, China
| | - Hao Fong
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai, 201620, China
| | - Xia Yin
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai, 201620, China
| | - Jianyong Yu
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai, 200051, China
| | - Bin Ding
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai, 201620, China
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai, 200051, China
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
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Li M, Feng Y, Wang K, Yong WF, Yu L, Chung TS. Novel Hollow Fiber Air Filters for the Removal of Ultrafine Particles in PM 2.5 with Repetitive Usage Capability. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:10041-10049. [PMID: 28753306 DOI: 10.1021/acs.est.7b01494] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Severe air pollution has become a global concern, and there is a pressing need to develop effective and efficient air filters for removing airborne particulate matters (PMs). In this work, a highly permeable poly(ether sulfone) (PES) based hollow fiber membrane was developed via a one-step dry-jet wet spinning. For the first time, a hollow fiber membrane was used in removing the ultrafine particles (PMs with aerodynamic equivalent diameters of less than 100 nm) in PM2.5. The novel air filter was designed to possess the synergistic advantages of porous filters and fibrous filters with a sievelike outer surface and a fibrouslike porous substrate. A filtration efficiency of higher than 99.995% could be easily achieved when the self-support hollow fiber was challenged with less than 300 nm particulates. Without losses of the structural advantages, we have demonstrated that the permeation properties of the hollow fiber membrane can be facilely tailored via manipulation of the dope and bore fluid formulations. Various cleaning strategies were explored to regenerate the membrane performance after fouling. Both water rinse and backwash showed effectiveness to restore the membrane permeance for repetitive usage.
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Affiliation(s)
- Manqing Li
- Department of Chemical & Biomolecular Engineering and ‡Department of Civil & Environmental Engineering, National University of Singapore , Singapore 117585, Singapore
| | - Yingnan Feng
- Department of Chemical & Biomolecular Engineering and ‡Department of Civil & Environmental Engineering, National University of Singapore , Singapore 117585, Singapore
| | - Kaiyu Wang
- Department of Chemical & Biomolecular Engineering and ‡Department of Civil & Environmental Engineering, National University of Singapore , Singapore 117585, Singapore
| | - Wai Fen Yong
- Department of Chemical & Biomolecular Engineering and ‡Department of Civil & Environmental Engineering, National University of Singapore , Singapore 117585, Singapore
| | - Liya Yu
- Department of Chemical & Biomolecular Engineering and ‡Department of Civil & Environmental Engineering, National University of Singapore , Singapore 117585, Singapore
| | - Tai-Shung Chung
- Department of Chemical & Biomolecular Engineering and ‡Department of Civil & Environmental Engineering, National University of Singapore , Singapore 117585, Singapore
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