摘要
为了进一步提高聚偏氟乙烯(PVDF)中空纤维膜的亲水性,采用熔融纺丝拉伸法制备PVDF/乙烯-乙烯醇(EVOH)中空纤维膜,成功制备了多重孔结构PVDF中空纤维膜。将PVDF、EVOH和功能粒子熔融共混制备初生中空纤维膜,利用两相之间的相容性差异,通过后拉伸设计多重孔结构,探究了EVOH及拉伸比对中空纤维膜孔结构及性能的影响。结果表明,EVOH能明显提高膜的亲水性能及孔隙率。当拉伸比达到150%时,水接触角达到61°,纯水通量达到354 L/(m^(2)·h)。在制备过程中没有使用有机溶剂和有毒试剂,实现了PVDF中空纤维膜的绿色制备。
In order to further improve the permeability of poly(vinylidene fluoride)(PVDF)hollow fiber membranes,PVDF/ethylene vinyl alcohol copolymer(EVOH)hollow fiber membranes were prepared by melt spinning and stretching method,and multiple pore structure PVDF hollow fiber membranes were successfully prepared.Primary hollow fiber membranes were prepared by melt blending PVDF,EVOH and functional particles,and the compatibility difference between the two phases was utilized to explore the effects of different stretching ratios on the pore structure as well as the performance of hollow fiber membranes by designing the multiple pore structure through post-stretching.The results show that EVOH can significantly improve the hydrophilicity and porosity of the prepared membranes.When the stretch ratio reaches 150%,the water contact angle reaches 61°,and the pure water flux reaches 354 L/(m^(2)·h).Meanwhile,no organic solvent and toxic reagent were used in the preparation process,which realizes the green preparation of PVDF hollow fiber membrane.
作者
岳征杰
陈凯凯
王琦铭
代云龙
严海波
张爽
闫静静
肖长发
Zhengjie Yue;Kaikai Chen;Qiming Wang;Yunlong Dai;Haibo Yan;Shuang Zhang;Jingjing Yan;Changfa Xiao(School of Textiles and Fashion,Shanghai University of Engineering Science,Shanghai 201620,China;School of Materials Science and Engineering,Tiangong University,Tianjin 300380,China)
出处
《高分子材料科学与工程》
北大核心
2025年第6期49-58,共10页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目(52103035,52173038)。
关键词
聚偏氟乙烯
乙烯-乙烯醇共聚物
中空纤维膜
熔融纺丝拉伸法
多重孔
渗透性
poly(vinylidene fluoride)
ethylene vinyl alcohol copolymer
hollow fiber membrane
melt-spinning and stretching method
multiple pores
permeability
