Abstract
In order to solve the problem of air pollution, especially in high temperature environment, an ultrafine poly(tetrafluoroethylene) (PTFE) porous fibrous membrane (UPPFM) was created by electro-centrifugal spinning, sintering calcination and impregnation technology in this paper. The pores distribution on the surface of the fibers could be simply controlled by adjusting PVP/PTFE ratios, and prompted the porosity of obtained membrane up to 94.1%. The obtained membrane presented an ultralow air resistance to 89.9 Pa with filtration efficiency higher than 99.72%. Moreover, UPPFM showed excellent heat stability and reusability, and therefore exhibited a great potential application in the high temperature air filtration.
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