作　　者： (刘金霞）; (杨倩丽）; (吴昊天）; (魏柳荷）; (马志）;

机构地区： 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

出　　处： 《石油化工》 2017年第6期751-758,共8页

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