连续ATRP法合成两亲性聚苯乙烯－b-聚甲基丙烯酸嵌段共聚物  

Synthesis of amphiphilic diblock copolymer PS-b-PMAA via consecutive ATRPs

作　　者：张丽芬[1,2] 程振平[1] 周年琛[1] 朱健[1] 朱秀林[1] 

机构地区：[1]苏州大学化学化工学院有机合成重点实验室,苏州215006 [2]苏州大学材料工程学院,苏州215006

出　　处：《Journal of Chemistry and Chemical Engineering》2008年第1期6-10,共5页化学与化工（英文版）

基　　金：本文获得高等学校博士学科点专项科研基金项目（项目编号：20040285010）资助.

摘　　要：本文采用连续原子转移自由基聚合（A7RP）法合成两亲性嵌段共聚物。首先以α－溴异丁酸乙酯为引发剂，CuCI／N，N，N′，N″，N″－五甲基二乙烯基三胺（PMDETA）为催化体系，苯乙烯（St）为单体，制得了不同分子量且分布窄的聚苯乙烯（PS）；然后以PS为大分子引发剂，CuCl／PMDETA为催化体系，甲基丙烯酸甲酯（MMA）为单体，得到了不同分子量且分子量分布较窄的二嵌段共聚物PS－b-PMMA；把所得的嵌段共聚合物进行水解，酸化得到聚苯乙烯－b－聚甲基丙烯酸（PS—b－PMAA）两亲嵌段共聚物。论文着重封以PS为大分子引发剂的MMA的ATRP的聚合动力学进行了研究，并采用GPC、1HNMR封聚合物进行了表徵。Amphiphilic diblock copolymer polystyrene block poly （methacrylate acid）, PS-b-PMAA, synthesized via consecutive atom transfer radical polymerizations （ATRPs）. Firstly, the macroinitiators PS-CI different molecular weights and narrow molecular weight distributions were synthesized via ATRP of styrene using ethyl 2-bromoisobutyrate （EBiB） as an initiator, CuC! as a catalyst was with （st）, and N,N,N′,N″,N″pentamethyldiethylenetriamine （PMDETA） as a ligand. Secondly, the diblock copolymer PS-b-PMMA with different molecular weights and narrow molecular weight distributions were obtained via a consecutive ATRP of methyl methacrylate （MMA）, using the PS-Cls as the macroinitiators. Lastly, the amphiphilic diblock copolymer PS-b-PMAA was obtained by hydrolysis and acidification of the diblock copolymer PS-b-PMMA. In this work, the kinetics of block copolymerization of MMA was investigated using PS-Cl as the macroinitiators, and GPC and 1H NMR were used to character the （co） polymers.

关 键 词：原子转移自由基聚合(ATRP) 甲基丙烯酸甲酯(MMA) 苯乙烯(St) 嵌段共聚物 动力学 

分 类 号：TQ2[化学工程—有机化工]