分离丙烯/丙烷的超薄聚电解质中空纤维复合膜的制备  

Preparation of Thin-layer Hollow Fiber Polymer Electrolyte Composite Membrane for Propylene and Propane Separation

作　　者：王宏琳[1] 杨大令[1] 张守海[1] 王志鹏[1] 闻学秋[1] 蹇锡高[1] 

机构地区：[1]大连理工大学化工学院高分子系,大连116012

出　　处：《应用化学》2007年第3期241-244,共4页Chinese Journal of Applied Chemistry

基　　金：国家"八六三"计划项目(2003AA33G030);国家"九七三"基础研究计划项目(2003CB615700)

摘　　要：以含二氮杂萘联苯结构的聚芳醚砜酮PPESK（Tg为263-305℃）为膜材料,以干-湿纺丝技术制备基膜,外涂法涂覆聚电解质（聚乙烯基吡咯烷酮PVP）并络合Ag＋离子,制备了超薄皮层中空纤维复合膜,皮层厚度约为1μm。研究了复合膜聚电解质涂层PVP质量分数、Ag＋含量、气体压力差、测试温度和不同过渡金属离子等对复合膜丙烯/丙烷分离性能的影响。结果表明,在压力为200kPa、温度为23℃下,当PVP质量分数为10%、n（Ag＋）∶n（CO）=1∶1的条件下,复合膜对丙烯渗透率可达16.32GPU,分离系数为4.79。A substrate membrane of polyphthalazinone ether sulfone ketone（PPESK） with special morphology was spun, and the asymmetric hollow-fiber membranes was formed though dry/wet spinning. The composite membrane with thin layer（ ≈ 1 μm） was successfully prepared by coating PVP and complexing silver ion. The influences of PVP concentration, mole ratio of Ag ^＋ to C=O , operational pressure and tempe-rature, types of transition metals were systematically studied. At 200 kPa and 23℃, the propylene permeance was 16. 32 GPU, and propylene/propane selectivity reached 4. 79 when the concentration of PVP was 10% and mole ratio of Ag ＋ to C=O was 1.

关 键 词：聚芳醚砜酮 中空纤维 复合膜 聚电解质 过渡金属离子 

分 类 号：O631[理学—高分子化学] TB383[理学—化学]