七通道中空纤维超滤膜的制备与性能调控  

Fabrication and Performance Modulation of Seven-Channel Hollow Fiber Ultrafiltration Membrane

作　　者：张靖昱 董香灵 付晓燕[3] 周美青[1] 康国栋[1] 金焱 曹义鸣[1] ZHANG Jingyu;DONG Xiangling;FU Xiaoyan;ZHOU Meiqing;KANG Guodong;JIN Yan;CAO Yiming(Dalian Institute of Chemical Physics,Chinese Aeademy of ＆iences,Dalian 116023,China;University of Chinese Academy of Sciences,Beijing 100049,China;Dalian Environmental Monitoring Centre,Dalian 116023,China;Guiyang Walton Technology Co.,Ltd,Guiyang 550003,China)

机构地区：[1]中国科学院大连化学物理研究所,辽宁大连116023 [2]中国科学院大学,北京100049 [3]大连市环境监测中心,辽宁大连116023 [4]贵阳时代沃顿科技有限公司,贵州贵阳550003

出　　处：《水处理技术》2018年第9期47-50,共4页Technology of Water Treatment

基　　金：辽宁省自然科学基金面上项目(2015020579)

摘　　要：以聚醚酰亚胺(PEI)为膜材料、N,N-二甲基乙酰胺为溶剂、水为凝固浴,采用干-湿相转化法制备七通道中空纤维超滤膜,研究了PEI含量和3种添加剂γ-丁内酯、聚乙二醇600(PEG600)、聚乙烯吡咯烷酮-K30对膜结构和性能的影响。结果表明,随着PEI含量升高,膜断面由指状孔向海绵状孔转化,拉断力和爆破压力大幅提升。以PEG600为添加剂时膜具有最佳的综合性能,拉断力为16.55 N,纯水通量为247.39 L/(m^2·h),对牛血清白蛋白的截留率达93.9%。A novel seven-channel hollow fiber membrane was fabricated via dry-wet phase separation method using polyetherimide （PEI） as membrane material, N,N-dimethylacetamide as solvent and tap water as coagulation bath. The effect of PEl content and three additives including y-butyrolactone, polyethylene glycol 600 （PEG600） and polyvinylpyrrolidone K-30 on membrane structure and performance were investigated. The results showed that, the cross-section morphology transferred from finger-liked to sponge-liked, the breaking load and burst pressure improved dramatically with the increase of PEI content. In addition, PEG600 exhibited the best performance among three additives, the breaking load of membrane was 16.55 N, the water flux and bovine serum albumin rejection were 247.39 L/（m2·h） and 93.9%, respectively.

关 键 词：七通道中空纤维膜 聚醚酰亚胺 PEG600 干-湿相转化法 

分 类 号：TQ028.8[化学工程]