Polyacrylonitrile microscaffolds assembled from mesh structures of aligned electrospun nanofibers as high-efficiency particulate air filters

Tzu Hao Kao, Shuenn Kung Su, Ching Iuan Su, Ai Wei Lee, Jem Kun Chen

研究成果: 雜誌貢獻文章同行評審

20 引文 斯高帕斯(Scopus)

摘要

Electrospun polyacrylonitrile (PAN) fibers of very small diameters have potential for integration into filters capable of increasing the particle filtration efficiency. To fulfill the requirements for high-efficiency particulate air (HEPA) filters with a reasonable pressure drop, we generated aligned electrospun PAN fibers through pre-alignment at various rotation rates and subsequent solvent vapor annealing (SVA) under a loading. We evaluated the properties of microscaffold filters assembled from aligned electrospun PAN fibers in the form of linear, square, and triangular multiple meshes. The microscaffolds featuring multiple square meshes exhibited dramatically increased filtration efficiency without a significant pressure drop. A nine-layer cross-ply structure provided a filtration efficiency of 99.98% for 0.25-μm particles at a face velocity of 10 cm s−1; its filtration quality factor was the highest among all of the tested microscaffolds. Thus, HEPA filters featuring a low packing density can be achieved using PAN fibers.

原文英語
頁(從 - 到)615-625
頁數11
期刊Aerosol Science and Technology
50
發行號6
DOIs
出版狀態已發佈 - 六月 2 2016

ASJC Scopus subject areas

  • 材料科學(全部)
  • 環境化學
  • 污染

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