十四烷基三甲基氯化铵/聚丙烯腈静电纺纤维膜的制备及其PM_(0.26)过滤性能  

Fabrication and properties of electrospun tetradecyl trimethyl ammonium chloride/polyacrylonitrile fibrous membrane for air filtration of PM_(0.26)

作　　者：周智勇 杨宇晨 刘力 覃小红[1,2] ZHOU Zhiyong;YANG Yuchen;LIU Li;QIN Xiaohong(Key Laboratory of Textile Science&Technology,Ministry of Education,Donghua University,Shanghai 201620,China;College of Textiles,Donghua University,Shanghai 201620,China)

机构地区：[1]东华大学纺织面料技术教育部重点实验室,上海201620 [2]东华大学纺织学院,上海201620

出　　处：《东华大学学报（自然科学版）》2022年第5期35-41,共7页Journal of Donghua University(Natural Science)

基　　金：长江学者(青年学者)计划资助项目(51773037);国家自然科学基金资助项目(51373033)。

摘　　要：基于静电纺丝技术提出了有机离子盐诱导纤维非稳态沉积以制备高效低阻滤材的新方法。通过调控十四烷基三甲基氯化铵(TTAC)离子盐的质量分数,制备不同孔隙率的聚丙烯腈(PAN)纤维,初步探明高孔隙率纤维膜的成型机制,同时系统研究TTAC质量分数、纺丝时间以及过滤测试流量对纤维膜过滤性能的影响。结果表明:当过滤测试流量为32 L/min时,TTAC掺杂质量分数为30%的PAN纤维膜孔隙率高达89.82%,对0.26μm粒径颗粒物(PM_(0.26))的过滤效率高达99.50%,过滤阻力仅为119.56 Pa,在同等过滤效率下,比TTAC掺杂质量分数为10%和20%的PAN纤维膜的过滤阻力分别降低了54.6%和29.9%。Based on electrospinning technique,a novel method was proposed to prepare a high-efficiency and low-resistance filter with fluffy structure,which was achieved by organic salt-induced unsteady deposition of fibers.Polyacrylonitrile(PAN)fibrous membranes with high porosity were obtained by adjusting the mass fraction of tetradecyl trimethyl ammonium chloride(TTAC).The formation mechanism of the highly porous nanofiber membrane was revealed.Meanwhile,the effect of mass fraction of TTAC,spinning time and flow rate on the filtration performance were also studied.The results show when the mass fraction of TTAC is 30%,the PAN fibrous membrane possesses high porosity of 89.82%,which endows itself with low filtration resistance of 119.56 Pa and high filtration efficiency of 99.50%to 0.26μm particle(PM_(0.26)).Moreover,the filtration resistance of the one is 29.9%and 54.6%lower than that of PAN nanofiber membranes doped with 20%TTAC and 10%TTAC,respectively.

关 键 词：空气过滤 静电纺丝 纳米纤维 聚丙烯腈 十四烷基三甲基氯化铵 

分 类 号：TS155.6[轻工技术与工程—纺织材料与纺织品设计]