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标题：Design and Development of a Novel Nanofiber Nasal Filter (NNF) to Improve Respiratory Health
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作者：Taewon T. Han ; Letao Yang ; Ki-Bum Lee 等
期刊名称：Aerosol and Air Quality Research
印刷版ISSN：1680-8584
出版年度：2018
卷号：18
期号：8
页码：2064-2076
DOI：10.4209/aaqr.2018.03.0086
语种：English
出版社：Chinese Association for Aerosol Research in Taiwan
摘要：Currently available nasal filters are not well-suited for protecting humans against the fine and ultrafine airborne particles. In this research, we designed and evaluated a novel nanofiber nasal filter (NNF) capable of reducing personal exposure not only to large allergenic particles but also to ultrafine particles, thus reducing respiratory health risks. A new hybrid filter (HF) medium for the NNF was fabricated by overlaying a carbon filter substrate with nylon nanofibers produced by electrospinning. After optimizing the filter’s production parameters, the HF was produced using the Nylon-6 polymer solution with a concentration of 15 wt%, a substrate based on a MERV 5 carbon filter with a density of 61 kg m–3, and a nanofiber surface coating density of 0.72 g m–2 (or 0.54 g m–2 as a second choice). The new HF was tested with fluorescent polystyrene latex beads sized 0.026–3.1 µm and at operating flow rates of 7.5–30 L min–1. The newly developed NNF showed more than a 90% collection efficiency for particles > 1 µm, representing bacteria and molds, and more than a 50% efficiency for particles < 0.5 µm, including ultrafine particles—about a 2.3-fold improvement compared to commercially available nasal filters. Thus, this NNF may serve as a useful tool to minimize our exposure to airborne pollutants.
关键词：Personal exposure;Electrospinning;Hybrid filter;Carbon filter;Ultrafine particles