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Title: Waterproof-breathable PTFE nano- and microfiber membrane as high efficiency PM2.5 filter
Authors: Li, X.
Wang, X.-X.
Yue, T.-T.
Xu, Y.
Zhao, M.-L.
Yu, M.
Ramakrishna, S. 
Long, Y.-Z.
Keywords: Air filter
PTFE nanofiber membrane
Issue Date: 2019
Publisher: MDPI AG
Citation: Li, X., Wang, X.-X., Yue, T.-T., Xu, Y., Zhao, M.-L., Yu, M., Ramakrishna, S., Long, Y.-Z. (2019). Waterproof-breathable PTFE nano- and microfiber membrane as high efficiency PM2.5 filter. Polymers 11 (4) : 590. ScholarBank@NUS Repository.
Rights: Attribution 4.0 International
Abstract: This study shows the feasibility of using electrospinning technique to prepare polytetrafluoroethylene/poly (vinyl alcohol) (PTFE/PVA) nanofibers on PTFE microfiber membrane as substrate. Then, PVA in the fiber membrane was removed by thermal treatment at about 350 °C. Compared to PTFE microfiber substrates, the composite PTFE fiber membranes (CPFMs) have improved filtration efficiency by 70% and water contact angle by 23°. Experimental test data showed that the water contact angle of the sample increased from about 107° to 130°, the filtration efficiency of PM2.5 increased from 44.778% to 98.905%, and the filtration efficiency of PM7.25 increased from 66.655% to 100% due to the electrospun PTFE nanofiber layer. This work demonstrates the potential of CPFMs as a filter for the production of indoor or outdoor dust removal and industrially relevant gas filtration. © 2019 by the authors.
Source Title: Polymers
ISSN: 20734360
DOI: 10.3390/polym11040590
Rights: Attribution 4.0 International
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