PSF支撑层结构对PDMS复合膜渗透汽化性能的影响  

INFLUENCE OF PSF SUPPORT LAYER STRUCTURE ON THE PERVAPORATION PERFORMANCE OF PDMS/PSF COMPOSITE MEMBRANES

作　　者：顾瑾 朱颖 李俊俊 孙余凭 张林[2] 陈欢林[2] 

机构地区：[1]江南大学化学与材料工程学院,江苏无锡214122 [2]浙江大学化学工程与生物工程学系,浙江杭州310027

出　　处：《水处理技术》2012年第5期48-50,54,共4页Technology of Water Treatment

基　　金：国家高技术研究发展计划(863)项目(2009AA02Z208);中央高校基本科研业务费专项资金资助项目

摘　　要：以4种不同结构的聚砜(PSF)作为支撑层,制备PDMS/PSF渗透汽化复合膜,考察其用于乙醇/水体系的分离性能,以研究支撑层结构对渗透汽化复合膜分离性能的影响。采用SEM和EDX分析复合膜表层结构,结果表明,支撑层结构几乎不影响复合膜的选择性,但对膜通量有较大影响,特别是支撑层的表面结构对复合膜性能的影响比断面结构更明显。In this paper,four polysulfone（PSF） microporous membranes were used as substrate to prepare PDMS/PSF pervaporation composite membranes for concentrating ethanol aqueous solution,and the influence of substrate structure on the pervaporation performance of composite membranes was investigated.The structure and morphology of substrate and composite membranes were characterized by SEM and EDX,the results showed that the structure of the support membranes hardly influenced the selectivity of composite PDMS membranes,but significantly influenced the total flux.Meanwhile,compared with the cross-section structure,the surface structure of substrate was a key factor of pervaporation flux.

关 键 词：渗透汽化 PSF支撑层 PDMS复合膜 乙醇水溶液 

分 类 号：TQ028.8[化学工程]