Improved filter media with PVA/citric acid/Triton X-100 nanofibers for filtration of nanoparticles from air

Poly(vinyl alcohol) nanofibers for air filtration were produced by electrospinning using citric acid and different concentrations of Triton X-100 surfactant that enhances nanofibers production by electrospinning. Filtration tests with nanoparticles (5.94-224.7 nm) and tests of resistance to wet air streams were performed and it was found that there was an optimum concentration of surfactant that provided the highest quality factors for nanofiltration. The median fiber size, filter porosity, thickness of the filter medium, and the Darcian permeability constant were strongly dependent on the concentration of Triton X-100 in the polymer solution. The filters were resistant to humidity, with a maximum 4.1% change of the pressure drop after 60 min exposure to an air stream at 90% relative humidity.

用于空气过滤的聚乙烯醇纳米纤维是通过使用柠檬酸和不同浓度的Triton X-100表面活性剂进行电纺丝生产的，该表面活性剂可增强通过电纺丝生产纳米纤维的能力。进行使用纳米颗粒（5.94-224.7 nm）的过滤测试和对湿气流的耐受性测试，结果发现存在最佳浓度的表面活性剂，为纳米过滤提供了最高的质量因子。 中值纤维尺寸，过滤器孔隙率，过滤器介质厚度和Darcian渗透率常数在很大程度上取决于聚合物溶液中Triton X-100的浓度。 过滤器具有抗湿性，暴露于90％相对湿度的气流60分钟后，压降最大变化为4.1％。

Published: 2020

Journal ：POLYMER BULLETIN

Impact Factor：1.859

Paper link: https://link.springer.com/article/10.1007/s00289-020-03431-w