聚丙烯腈
过滤(数学)
材料科学
微型多孔材料
纳米纤维
空气过滤器
复合材料
化学工程
气流
滤波器(信号处理)
粒子(生态学)
活性炭
微粒
聚合物
化学
有机化学
计算机科学
吸附
入口
工程类
地质学
海洋学
统计
机械工程
数学
计算机视觉
作者
Mihailo Mirković,Dušica Stojanović,Daniel M. Mijailović,Nemanja Barać,Đorđe Janaćković,Petar S. Uskoković
标识
DOI:10.1016/j.matchemphys.2022.126103
摘要
Particulate matter 2.5 (PM2.5) pollutant particles have been identified as significant participants in air pollution, thus, special attention is paid to air filtration as a method of their efficient removal. A novel and simple method of producing nanofiber-based filters for efficient PM2.5 capture with multiple active components are proposed. Electrospun polyacrylonitrile (PAN) polymer was used both as a base filter material and as a precursor for producing microporous carbon nanofibers (MCNFs), which incorporated into the nanofibrous structure of the filter media. The fabricated PAN/MCNFs filters could reach removal efficiency of PM2.5 pollutant particles of up to 99% for with polluted air airflow velocity of 500 ml min−1, showing greater pollutant particle binding affinity with incorporated MCNFs. Experiments also show enhanced mechanical and thermal properties of studied air filters, with the addition of MCNFs – more than 4% and 6% increase in storage modulus and cyclization temperature in comparison to the base PAN filter, respectively. While using a facemask with inserted PAN/MCNFs filter, a reduced temperature variation in the facial region of the user was recorded – several degrees less when compared to a commonly used 3 M Aura 9320+ mask. This opens a possibility of their application in both industrial air filtering and as filters in facemask production.
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