聚亚甲基-b-聚(N-异丙基丙烯酰胺)-b-聚苯乙烯三嵌段共聚物的合成及制备的有序多孔薄膜的性能  

Syntheses of polymethylene-b-p(N-isopropylacrylamide)-b-polystyrene triblock copolymers and its ordered porous films

作　　者：刘金霞[1] 杨倩丽[1,2] 吴昊天[2] 魏柳荷[1] 马志[2] 

机构地区：[1]郑州大学化学与分子工程学院郑州市弹性密封材料重点实验室,河南郑州450052 [2]中国科学院上海有机化学研究所有机功能分子合成与组装化学重点实验室,上海200032

出　　处：《石油化工》2017年第6期751-758,共8页Petrochemical Technology

基　　金：国家自然科学基金资助项目(21374130;21074146);河南省教委自然科学基金资助项目(2010A150023)

摘　　要：将叶立德同源聚合与可逆加成-断裂链转移聚合相结合,设计合成了系列结构可控、组成可调的含有聚烯烃链段和温度响应性聚合物链段的共聚物,即聚亚甲基-b-聚(N-异丙基丙烯酰胺)-b-聚苯乙烯(PM-b-PNIPAM-b-PS)三嵌段共聚物(M_n=6 100~25 200,M_w/M_n=1.18~1.32,PS链段M_n=1 350~18 000),研究了共聚物在溶液中的自组装性质和温度响应性,并利用静态呼吸图法制备了该三嵌段共聚物的有序多孔薄膜。实验结果表明,所制备的PM-b-PNIPAM-b-PS三嵌段共聚物在THF/H2O中自组装,于水溶液中形成平均粒径为200 nm的球形胶束,且具有温度响应性。以氯仿为溶剂、22℃、95%湿度条件下,PM-b-PNIPAM-b-PS三嵌段共聚物可制得到孔径均一(平均直径为1.03μm和2.02μm)的有序多孔薄膜。A series of well-defined polymethylene-b-p（N-isopropylacrylamide）-b-polystyrene（PM-bPNIPAM-b-PS） triblock copolymers（M_n 6 100-25 200,M_w/M_n 1.18-1.32;M_n（PS segment） 1 350-18 000） with polymethylene as polyolefin segment and PNIPAM as temperature-responsive segment were synthesized via the combination of living polymerization of Ylides and reversible additionfragmentation chain transfer polymerization. The self-assembly and temperature-responsive behaviors of such triblock copolymers in solution were investigated. The ordered porous films of such triblock copolymers were fabricated via static Breath-Figure process. The results showed that the spherical micelles of PM-b-PNIPAM-b-PS triblock copolymers with average pore size of 200 nm in water can be formed by self-assembly in THF/H_2O solution and showed temperature-responsive properties. The PMb-PNIPAM-b-PS triblock copolymers can be fabricated into ordered porous films with average pore sizes of 1.03 μm and 2.02 μm using CHCl_3 as solvent at 22 ℃ under relative humidity of 95%.

关 键 词：聚烯烃功能化 嵌段共聚物 自组装 温度响应性 有序多孔薄膜 

分 类 号：TQ325.2[化学工程—合成树脂塑料工业]