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Journal of Textile Research ›› 2018, Vol. 39 ›› Issue (09): 1-7.doi: 10.13475/j.fzxb.20170900107

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Preparation and filtration performance of polyacrylonitrile graded composite nanofiber membrane

  

  • Received:2017-09-01 Revised:2018-05-01 Online:2018-09-15 Published:2018-09-12

Abstract:

In order to play the role of nanofiber membrane in field of high efficiency air filter material and realize the continuous production of nanofiber filter material, the Box-Behnken trial design method was used to establish the relationship between polyacrylonitrile (PAN) nanofiber diameter and spinning process parameters. The nanofibers used in the field of air filtration were prepared with a self-made electrostatic-induction-assisted solution blown machine, and PAN nanofibers with controllable diameter were prepared continuously. PAN nanofibers with different diameters were prepared by continuous on-line composite design. The structure and morphology of the fiber membrane were prepared by continuous on-line composite design. The structure and morphology of the fiber membrane were characterized. The reaults indicates that by adjusting the spinning process parameters, the control of fiber diameter can be effectively achieved. Meanwhile, the composite membrane by this technology is fabricated by physical screening after eliminating static electricity. The removal rate and pressure drop of the composite membrane for dioctyl sebacate particles (0f 0.4 μm) are  99.923 % and 117 Pa, respectively. The filtration efficiency for particles with larger than 0.8 μm is 100%.

Key words: polyacrylonitrile micro-nanofiber')">

polyacrylonitrile micro-nanofiber, macro preparation, diameter control, composite fiber menbrane, efficient air filter material

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