活性炭纤维布与电纺纤维的杂化及其颗粒物过滤性能

Hybridization of activated carbon fiber cloth with electrospun nanofibers for particle filtration

活性炭纤维具有较高的吸附容量而被用于挥发性有机物的治理,而静电纺丝纤维对颗粒物具有较好的拦截能力可望用于过滤材料。本文采用高压静电纺丝的方法,将聚乙烯醇和聚丙烯腈纳米纤维纺丝至酚醛树脂基活性炭纤维布上获得了2种杂化纤维材料。通过颗粒物过滤测试系统评价了杂化纤维材料的过滤性能,结果表明样品的过滤效率与电纺丝纤维量呈正相关。由于电纺丝纤维引入的压电效应,使得样品的过滤效率随着气流流速的增加而提高。杂化纤维材料还具有较好的挥发性有机物吸附性能。这表明活性炭纤维布与电纺纤维的杂化材料在空气污染治理方面将具有较好的应用前景。

Activated carbon fibers(ACFs)have high adsorption capacities and can be used in the treatment of benzene,while electrospun nanofibers are expected to be used as a filtration material.In this work,two hybrids of electrospun nanofibers and ACF cloth were prepared by electrospinning polyvinyl alcohol and polyacrylonitrile nanofibers into a phenolic resin-based ACF cloth.The filtration performance of the two hybrids was evaluated.Results indicate that there is a positive correlation between the filtration efficiency and the amount of electrospun nanofibers in the hybrid.The filtration efficiency increases with increasing air velocity,which is attributed to a piezoelectric effect introduced by the electrospun nanofibers.The hybrids have a good adsorption capacity for benzene,which suggests that the materials are promising for treating air pollution.