热致相分离法制备聚偏氟乙烯微孔膜的微观结构研究  

Study on microstructure of PVDF membrane formed via TIPS

作　　者：李永国[1] 苏仪[1] 陈翠仙[1] 李继定[1] 

机构地区：[1]清华大学化工系膜技术与工程研究中心,北京100084

出　　处：《膜科学与技术》2006年第4期10-13,共4页Membrane Science and Technology

基　　金：国家973项目(2003CB615701);国家自然科学基金资助项目(20576059);中国博士后科学基金(2005038345)

摘　　要：以邻苯二甲酸二丁酯(DBP)和十二醇组成的混合溶剂为稀释剂,采用热致相分离法(TIPS法)制备了聚偏氟乙烯(PVDF)微孔膜.测试了不同体系的固-液相分离温度,研究了稀释剂、冷却条件、聚合物浓度对膜断面微观结构的影响.The flat sheet microporous PVDF membrane was prepared via thermally induced phase separation （TIPS） method using DBP/lauryl alcohol mixture as the diluent. The solid - liquid phase separation temperatures of different systems were determined by DSC, and the membrane cross- section structure was observed by scanning electron microscope （SEM）. The effects of polymer concentration, cooling rate and diluent on the membrane cross- section structure were studied.

关 键 词：热致相分离 聚偏氟乙烯 微孔膜 

分 类 号：TB383.2[一般工业技术—材料科学与工程]