两亲性AB嵌段聚合物的合成与结构表征

Study on synthesis and structure characterization of amphiphilic AB-block copolymer

采用封闭体系,通过甲基丙烯酸甲酯的原子转移自由基聚合生成B段,并以此为大分子引发剂引发甲基丙烯酸缩水甘油酯(GMA)聚合,得到AB嵌段聚合物PMMA-b-PGMA.分别利用对硝基苯甲酸与二丁基胺对该聚合物中的环氧基团进行基团改性,制备了两亲性的AB嵌段聚合物.采用GPC、FT-IR以及化学分析等方法,对所制备的AB嵌段聚合物进行了结构表征.

An AB bolck copolymer PMMA-b-PGMA was prepared by the addition of glycidyl methacrylate（GMA） to macromolecular innitiator polymethylmethacrylate（PMMA）which was synthesized first via atom transfer radical polymerization in a closed system.The epoxy group,contained in the AB block copolymer（PMMA-b-PGMA）was then modified by p-nitrobenzzoic acid and dibutylamine and the amphiphilic AB block copolymers was obtained.The structure of the block copolymers was characterized with GPC,FT-IR and chemical analysis.