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Polyvinylidene fluoride multi-scale nanofibrous membrane modified using N-halamine with high filtration efficiency and durable antibacterial properties for air filtration. J Colloid Interface Sci 2022; 628:627-636. [PMID: 36027773 PMCID: PMC9381945 DOI: 10.1016/j.jcis.2022.08.077] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 08/07/2022] [Accepted: 08/11/2022] [Indexed: 12/14/2022]
Abstract
HYPOTHESIS Particulate matter (PM) pollution and the coronavirus (COVID-19) pandemic have increased demand for protective masks. However, typical protective masks only intercept particles and produce peculiar odors if worn for extended periods owing to bacterial growth. Therefore, new protective materials with good filtration and antibacterial capabilities are required. EXPERIMENTS In this study, we prepared multi-scale polyvinylidene fluoride (PVDF) nanofibrous membranes for efficient filtration and durable antibacterial properties via N-halamine modification. FINDINGS The N-halamine-modified nanofibrous membrane (PVDF-PAA-TMP-Cl) had sufficient active chlorine content (800 ppm), and the tensile stress and strain were improved compared with the original membrane, from 6.282 to 9.435 MPa and from 51.3 % to 56.4 %, respectively. To further improve the interception efficiency, ultrafine nanofibers (20-35 nm) were spun on PVDF-PAA-TMP-Cl nanofibrous membranes, and multi-scale PVDF-PAA-TMP-Cl nanofibrous membranes were prepared. These membranes exhibited good PM0.3 interception (99.93 %), low air resistance (79 Pa), promising long-term PM2.5 purification ability, and high bactericidal efficiency (>98 %). After ten chlorination cycles, the antibacterial efficiency against Escherichia coli and Staphylococcus aureus exceeded 90 %; hence, the material demonstrated highly efficient filtration and repeatable antibacterial properties. The results of this study have implications for the development of air and water filtration systems and multi-functional protective materials.
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Xia W, Peng G, Hu Y, Dou G. Desired properties and corresponding improvement measures of electrospun nanofibers for membrane distillation, reinforcement, and self‐healing applications. POLYM ENG SCI 2022. [DOI: 10.1002/pen.25851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Weihai Xia
- College of Mechanical Engineering, Zhejiang University of Technology Hangzhou China
| | - Guangjian Peng
- College of Mechanical Engineering, Zhejiang University of Technology Hangzhou China
| | - Yahao Hu
- College of Mechanical Engineering, Zhejiang University of Technology Hangzhou China
| | - Guijing Dou
- College of Mechanical Engineering, Zhejiang University of Technology Hangzhou China
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Ghorbani-Choghamarani A, Taherinia Z, Heidarnezhad Z, Moradi Z. Application of Nanofibers Based on Natural Materials as Catalyst in Organic Reactions. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2020.10.028] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Li J, Cai Z, Wang T, Wang C, Liu X, Li Y. A modified method for elastic properties of nanowires based on surface effect. NANOTECHNOLOGY 2020; 31:355701. [PMID: 32396879 DOI: 10.1088/1361-6528/ab925b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this paper, a modified method for predicting surface effect parameters based on experimental data is developed using the surface effect theory. Polyacrylonitrile (PAN) nanowires with diameters in a range of 100 nm - 320 nm are manufactured by electrospinning. The data of the effective elastic moduli of PAN nanowire varying with diameters are obtained by experimenting with contact atomic-force microscopy (C-AFM). It was found that the effective Young's modulus of nanowires increased with the diameter of the nanowires decreases. The validity of the method in this paper are confirmed by comparing with the existing work. By taking into account the effect of surface energy on the bending, the deviation of the prediction of surface effect parameters in the existing work is solved. The current results will also be useful for predicting nanowire surface effect parameters and be helpful for the design of nanostructures and nanodevices related to nanowires.
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Affiliation(s)
- Ji'an Li
- School of Mechanics and Engineering Southwest Jiaotong University Chengdu 610031 People's Republic of China
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The effect of oxygen plasma pretreatment on the properties of mussel-inspired polydopamine-decorated polyurethane nanofibers. JOURNAL OF POLYMER ENGINEERING 2020. [DOI: 10.1515/polyeng-2019-0219] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
AbstractIn this study, polyurethane (PU) scaffolds were fabricated by electrospinning technology and modified through the deposition of polydopamine (PDA) on the activated surface under oxygen plasma treatment. Herein, the effect of the modification process on the homogeneous surface coating and the changes in the physicochemical and biological properties were evaluated. Morphological observations demonstrated decoration of the nanofibrous microstructure with PDA, while the uniformity and homogeneity of the deposited layer increased after plasma oxygen treatment. Hydrophilicity measurements and swelling ratio indicated a remarkable improvement in the interaction of scaffolds with water molecules when the PDA coating is applied on the surface of the treated nanofibers. The biomineralization of the samples was characterized using X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM) images. It was found that PDA has the capability for mineralization, and the amount of deposited hydroxyapatite increased as a function of PDA content. The in vitro evaluation of constructs indicated great improvement in cell-scaffold interactions, biocompatibility, and alkaline phosphatase activity after coating the PDA on the plasma-modified matrix. These results suggest that PDA coating, especially after oxygen plasma treatment, improves the physicochemical and in vitro properties of PU scaffolds for bone tissue engineering application.
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Elnabawy E, Hassanain AH, Shehata N, Popelka A, Nair R, Yousef S, Kandas I. Piezoelastic PVDF/TPU Nanofibrous Composite Membrane: Fabrication and Characterization. Polymers (Basel) 2019; 11:E1634. [PMID: 31658601 PMCID: PMC6836188 DOI: 10.3390/polym11101634] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 10/02/2019] [Accepted: 10/05/2019] [Indexed: 11/17/2022] Open
Abstract
Poly (vinylidene fluoride) nanofibers (PVDF NFs) have been extensively used in energy harvesting applications due to their promising piezoresponse characteristics. However, the mechanical properties of the generated fibers are still lacking. Therefore, we are presenting in this work a promising improvement in the elasticity properties of PVDF nanofibrous membrane through thermoplastic polyurethane (TPU) additives. Morphological, physical, and mechanical analyses were performed for membranes developed from different blend ratios. Then, the impact of added weight ratio of TPU on the piezoelectric response of the formed nanofibrous composite membranes was studied. The piezoelectric characteristics were studied through impulse loading testing where the electric voltage had been detected under applied mass weights. Piezoelectric characteristics were investigated further through a pressure mode test the developed nanofibrous composite membranes were found to be mechanically deformed under applied electric potential. This work introduces promising high elastic piezoelectric materials that can be used in a wide variety of applications including energy harvesting, wearable electronics, self-cleaning filters, and motion/vibration sensors.
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Affiliation(s)
- Eman Elnabawy
- Center of Smart Nanotechnology and Photonics (CSNP), SmartCI Research Center of Excellence, Alexandria University, Alexandria 21544, Egypt.
| | - Ahmed H Hassanain
- Center of Smart Nanotechnology and Photonics (CSNP), SmartCI Research Center of Excellence, Alexandria University, Alexandria 21544, Egypt.
- Department of Textile Engineering, Faculty of Engineering, Alexandria University, Alexandria 21544, Egypt.
| | - Nader Shehata
- Center of Smart Nanotechnology and Photonics (CSNP), SmartCI Research Center of Excellence, Alexandria University, Alexandria 21544, Egypt.
- Department of Engineering Mathematics and Physics, Faculty of Engineering, Alexandria University, Alexandria 21544, Egypt.
- Department of Physics, Kuwait College of Science and Technology (KCST), Jahraa 13133, Kuwait.
- Faculty of Science, Utah State University, Logan, UT 84341, USA.
- The Bradley Department of Electrical and Computer Engineering, Virginia Tech, Blacksburg, VA 24061, USA.
| | - Anton Popelka
- Center of Advanced Materials (CAM), Qatar University, Doha 2713, Qatar.
| | - Remya Nair
- Department of Engineering Mathematics and Physics, Faculty of Engineering, Alexandria University, Alexandria 21544, Egypt.
| | - Saifallah Yousef
- Center of Smart Nanotechnology and Photonics (CSNP), SmartCI Research Center of Excellence, Alexandria University, Alexandria 21544, Egypt.
| | - Ishac Kandas
- Center of Smart Nanotechnology and Photonics (CSNP), SmartCI Research Center of Excellence, Alexandria University, Alexandria 21544, Egypt.
- Department of Engineering Mathematics and Physics, Faculty of Engineering, Alexandria University, Alexandria 21544, Egypt.
- Department of Physics, Kuwait College of Science and Technology (KCST), Jahraa 13133, Kuwait.
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Yin C, Okamoto R, Kondo M, Tanaka T, Hattori H, Tanaka M, Sato H, Iino S, Koshiro Y. Electrospinning of Block and Graft Type Silicone Modified Polyurethane Nanofibers. NANOMATERIALS 2018; 9:nano9010034. [PMID: 30591700 PMCID: PMC6359549 DOI: 10.3390/nano9010034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 12/19/2018] [Accepted: 12/24/2018] [Indexed: 11/16/2022]
Abstract
Silicone modified polyurethane (PUSX) has attracted interest as a useful material by various properties, which are combined with silicone and polyurethane. In this paper, we tried to optimize the electrospinning process of silicone modified polyurethane (PUSX) nanofibers on a lab scale device and a multinozzle pilot scale set-up to investigate the potential and limitations of preparing PUSX nanofibrous sheets using different equipment. The morphology and diameter of the obtained fibers were studied via scanning electron microscopy (SEM). Attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR) was also carried out to analyze the chemical structure of PUSX nanofibers. As a result, we successfully figured out the optimal parameters of PUSX electrospinning process and demonstrated the great potential of the process for mass production of PUSX nanofibrous sheets from solutions.
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Affiliation(s)
- Chuan Yin
- Interdisciplinary Graduate School of Science and Technology, Shinshu University, 3-15-1, Tokida, Ueda-shi, Nagano 386-8567, Japan.
| | - Rino Okamoto
- Interdisciplinary Graduate School of Science and Technology, Shinshu University, 3-15-1, Tokida, Ueda-shi, Nagano 386-8567, Japan.
| | - Mikihisa Kondo
- Interdisciplinary Graduate School of Science and Technology, Shinshu University, 3-15-1, Tokida, Ueda-shi, Nagano 386-8567, Japan.
| | - Toshihisa Tanaka
- Interdisciplinary Graduate School of Science and Technology, Shinshu University, 3-15-1, Tokida, Ueda-shi, Nagano 386-8567, Japan.
| | - Hatsuhiko Hattori
- Silicone-Electronics Materials Research Center, Shin-Etsu Chemical Co., 1-10, Hitomi, Matsuida-machi, Annaka-shi, Gunma 379-0224, Japan.
| | - Masaki Tanaka
- Silicone-Electronics Materials Research Center, Shin-Etsu Chemical Co., 1-10, Hitomi, Matsuida-machi, Annaka-shi, Gunma 379-0224, Japan.
| | - Hiromasa Sato
- Dainichiseika Color & Chemicals Mfg. Co., 1-4-3, Ukima, Kita-ku, Tokyo 115-8622, Japan.
| | - Shota Iino
- Dainichiseika Color & Chemicals Mfg. Co., 1-4-3, Ukima, Kita-ku, Tokyo 115-8622, Japan.
| | - Yoshitaka Koshiro
- Dainichiseika Color & Chemicals Mfg. Co., 1-4-3, Ukima, Kita-ku, Tokyo 115-8622, Japan.
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