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Polarity-Dominated Stable N97 Respirators for Airborne Virus Capture Based on Nanofibrous Membranes
See http://tny.im/pBc — The worldwide COVID-19 pandemic has led to an extensive attention on the usage of N95-grade face respirators(N95 FFRs), which are dominated by external electrostatic charged polypropylene meltblown fabrics. However, their longevity and reusability are limited by consecutive donning and disinfection treatments. Herein, we developed stable N97 nanofibrous respirators based on chemically modified surface to enable remarkable filtration characteristics via polarity driven interaction. This was achieved by a thin-film coated polyacrylonitrile nanofibrous membrane (TFPNM), giving an overall long-lasting filtration performance with high quality factor at 0.42 Pa -1 (filtration efficiency: over 97%; pressure drop: around 10 Pa),…
Published in Informational
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