静电纺聚丙烯腈多层纳米纤维膜的制备、结构与性能  

Preparation,Structure and Properties of Electrospun Polyacrylonitrile Nanofiber Membrane

作　　者：应黎君[1] 常怀云[2] 熊杰[1,2] 

机构地区：[1]浙江理工大学材料与纺织学院,杭州310018 [2]浙江理工大学先进纺织材料与制备技术教育部重点实验室,杭州310018

出　　处：《现代纺织技术》2014年第6期1-4,共4页Advanced Textile Technology

摘　　要：将不同浓度的聚丙烯腈纺丝液依次进行静电纺丝,制备多层纳米纤维膜,并对其孔隙率、比表面积、力学性能和过滤性能进行测试分析。结果显示:多层纳米纤维膜的孔隙率和比表面积均较高,由4种质量分数为14%、12%、10%和8%的聚丙烯腈纺丝液依次纺丝制备的四层纳米纤维膜的孔隙率和比表面积最高,分别为54.7%和11.0m2/g,且此纳米纤维膜的力学性能优异。静电纺PAN多层纳米纤维膜的过滤效率值也较高,由质量分数分别为14%和8%两种纺丝液循环1次纺丝制备二层的纳米纤维膜过滤效率最高,对所有测试粒径的粒子的过滤效率都高于99.99994%,过滤阻力为863Pa,随循环次数增加,纳米纤维膜的过滤效率有所降低,过滤阻力则明显降低,这与多层纳米纤维膜的孔隙率和比表面积的变化趋势相反。This study conducts electro-spinning on polyacrylonitrile spinning solutions with different concentrations orderly,prepares multi-layer nanofiber membranes and tests and analyzes their porosity factor,specific surface area,mechanical properties and filtration properties.The result shows that multi-layer nanofiber membranes have a high porosity factor and specific surface area; nanofiber membrane prepared by spinning of polyacrylonitrile spinning solutions with a concentration of 14%,12%,10%and 8% orderly has the highest porosity factor and specific surface area,respectively 54.7%and 11.0m2/g and this nanofiber membrane has excellent mechanical properties.Electrospun PAN multilayer nanofiber membrane has a high filtration efficiency.Nanofiber membrane prepared by spinning of spinning solutions with a concentration of 14% and 8% for one cycle has the highest filtration efficiency and its filtration efficiency for all particles with test particle size is more than 99.99994%.Its filtration resistance is 863 Pa.With the increase of number of cycles,the filtration efficiency of nanofiber membrane decreases and its filtration resistance decreases greatly.This is opposite to the variation trend of porosity factor and specific surface area of multi-layer nanofiber membrane.

关 键 词：静电纺丝 聚丙烯腈 多层纳米纤维膜 复合纤维膜 过滤性能 

分 类 号：TS151.9[轻工技术与工程—纺织材料与纺织品设计]