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Dong T, Hua Y, Han G, Zhang Y, Chi S, Liu Y, Liu C, Lou CW, Lin JH. Biomimetic Fibrous Leaf-Vein Membrane Enabling Unidirectional Water Penetration and Effective Antibacterial PM Filtration. ACS Appl Mater Interfaces 2022; 14:37192-37203. [PMID: 35916495 DOI: 10.1021/acsami.2c10254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Air pollution induced by pathogenic particulate matter (PM) has posed a serious threat to public health worldwide. Advanced air filters are thus required, not only exhibiting high PM capture efficiency, low breathing resistance, and high internal moisture transferring performance but also isolating and inactivating external pathogenic aerosols. In this study, we demonstrated a facile approach to construct a biomimetic fibrous leaf-vein membrane with unidirectional water penetration and effective antibacterial PM filtration by one-step electrospinning of poly(vinylidene fluoride) (PVDF)-based multilayer nanofibers. With ultrathin fibers penetrating the skeletal framework of bimodal thick fibers, the membranes showed gradient interconnected porous structures and achieved a highly efficient and stable (in an acid and alkali environment) PM0.3 interception (>99.98%) with low air drag (51-71 Pa). In addition, the gradient narrow pores of the membranes contributed to a gradient higher hydrophilicity. The subsequent unidirectional water motion effectively isolates pathogenic aerosols typically generated by external individuals or ultrafast water penetration from the inverse face. Moreover, the membranes demonstrated an antibacterial efficacy (>99.99%) in a 5 min contact, inactivating the intercepted airborne pathogens efficiently. The test results proved that the proposed membranes were promising advanced air filters for respirator applications.
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Affiliation(s)
- Ting Dong
- College of Textile and Clothing, Qingdao University, #308, Ningxia Road, Qingdao 266071, P. R. China
- Advanced Medical Care and Protection Technology Research Center, Qingdao University, #308 Ningxia Road, Qingdao 266071, P. R. China
- Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, #308 Ningxia Road, Qingdao 266071, P. R. China
| | - Yue Hua
- College of Textile and Clothing, Qingdao University, #308, Ningxia Road, Qingdao 266071, P. R. China
- Advanced Medical Care and Protection Technology Research Center, Qingdao University, #308 Ningxia Road, Qingdao 266071, P. R. China
| | - Guangting Han
- Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, #308 Ningxia Road, Qingdao 266071, P. R. China
| | - Yuanming Zhang
- Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, #308 Ningxia Road, Qingdao 266071, P. R. China
| | - Shan Chi
- Bestee Material Co., Ltd., Qingdao, Shandong 266001, P. R. China
| | - Yanming Liu
- Sinotech Academy of Textile Co., Ltd., Qingdao, Shandong 266001, P. R. China
| | - Cui Liu
- Qingdao Byherb New Material Co., Ltd., Qingdao, Shandong 266001, P. R. China
| | - Ching-Wen Lou
- College of Textile and Clothing, Qingdao University, #308, Ningxia Road, Qingdao 266071, P. R. China
- Advanced Medical Care and Protection Technology Research Center, Qingdao University, #308 Ningxia Road, Qingdao 266071, P. R. China
- Department of Bioinformatics and Medical Engineering, Asia University, Taichung City 413305, Taiwan
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung City 404333, Taiwan
- Innovation Platform of Intelligent and Energy-Saving Textiles, School of Textile Science and Engineering, Tiangong University, Tianjin 300387, P. R. China
- College of Material and Chemical Engineering, Minjiang University, Fuzhou 350108, P. R. China
| | - Jia-Horng Lin
- College of Textile and Clothing, Qingdao University, #308, Ningxia Road, Qingdao 266071, P. R. China
- Advanced Medical Care and Protection Technology Research Center, Qingdao University, #308 Ningxia Road, Qingdao 266071, P. R. China
- Advanced Medical Care and Protection Technology Research Center, Department of Fiber and Composite Materials, Feng Chia University, Taichung City 407102, Taiwan
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung City 404333, Taiwan
- Innovation Platform of Intelligent and Energy-Saving Textiles, School of Textile Science and Engineering, Tiangong University, Tianjin 300387, P. R. China
- College of Material and Chemical Engineering, Minjiang University, Fuzhou 350108, P. R. China
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