热退火-选择性溶胀成孔法制备PS-b-PNIPAAm/PVDF纳米均孔复合膜  

Preparation of PS-b-PNIPAAm/PVDF composite membrane with ordered nanopores by thermal annealing-selective swelling-induced pore generation

作　　者：赖舒忆 马绍玲 李战[1] 王倩[1] 冯霞[1] Lai Shuyi Ma Shaoling Li Zhan Wang Qian Feng Xia(State Key Laboratory of Separation Membranes and Membrane Processes ,School of Material Science ＆ Engineering,Tianjin Polytechnic University, Tianjin 30038)

机构地区：[1]天津工业大学材料科学与工程学院,省部共建分离膜与膜过程国家重点实验室,天津300387

出　　处：《化工新型材料》2016年第10期61-63,共3页New Chemical Materials

基　　金：国家自然科学基金(51303129);天津市高等学校国家级大学生创新创业训练计划项目(20130058009)资助

摘　　要：将两亲嵌段共聚物聚苯乙烯-b-聚(N-异丙基丙烯酰胺)(PS-b-PNIPAAm)涂覆在聚偏氟乙烯(PVDF)膜上构建复合膜,采用热退火方式控制PS-b-PNIPAAm的微相分离行为,并以异丙醇为溶剂,利用选择性溶胀成孔法制备PS-b-PNIPAAm/PVDF复合膜,研究了不同退火温度对PS-b-PNIPAAm薄膜分相行为及PS-b-PNIPAAm/PVDF复合膜形貌的影响。结果表明:通过热退火和选择性溶胀成孔法能够得到纳米均孔复合膜,热退火温度对复合膜表面的形貌有较大影响。The composite membrane was prepared by coating the amphiphilic block copolymer polystyrene-b-poly （N-isopropyl acrylarnide）（PS-b-PNIPAAm） on polyvinylidene fluoride（PVDF）. The microphase separation behavior of PS-b-PNIPAAm was controlled by thermal annealing, and the PS-b-PNIPAAm/PVDF composite membrane was then prepared by selective swelling-induced pore generation with isopropanol as the selective solvent. The influence of annealing temperatures on the morphology of PS-b-PNIPAAm and PS-b-PNIPAAm/PVDF composite membrane was studied. The results showed that the composite membrane with ordered nanopores could be prepared by thermal annealing-selective swelling induced pore generation, and the morphology of composite membrane was controlled by the thermal annealing temperature.

关 键 词：两亲嵌段共聚物 选择性溶胀成孔法 热退火 纳米均孔复合膜 微相分离 

分 类 号：TB383.2[一般工业技术—材料科学与工程]