【作者】 宋雪； 张国俊； 纪树兰； 刘忠洲；

【Author】 SONG Xue~1,ZHANG Guojun~1,JI Shulan~1,LIU Zhongzhou~2 (1.College of Environmental and Energy Engineering,Beijing University of Technology, Beijing 100022,China;2.Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences,Beijing 100085,China)

【机构】 北京工业大学环境与能源工程学院； 中国科学院生态环境研究中心；

【摘要】 探索采用动态层-层静电吸附法（动态LBL）,以聚丙烯腈作为基膜,以聚丙烯酸（PAA）和聚乙烯亚胺（PEI）为聚离子派对制备中空纤维聚离子复合膜,初步考察了中空纤维聚离子复合膜的渗透汽化性能和对一价、二价阳离子的截留情况.研究结果表明:随着复合层数的增多,复合膜的渗透汽化分离因子表现出增长趋势;并且对Li⁺、Mg²⁺、Ca²⁺有一定的截留效果.更多还原

【Abstract】 The hollow fiber polyion composite membranes were prepared by dynamically depositing polyacrylic acid（PAA） and polyethyleneimine（PEI） alternatively on the ultrafiltration support membrane under a certain pressure.The hollow fiber polyion composite membranes were used to pervaporation separation of water—ethanol mixture in a pervaporation apparatus.The removal of univalent and bivalent cations using the assembled membrane was also evaluated. With the increase of polyion bilayer numbers,the pervaporation separation factor increased.Furthermore,the membranes assembled showed a certain capability to retain the cations of Li⁺,Mg²⁺ and Ca²⁺.更多还原