ATRP法合成甲基丙烯酸羟丙酯  

Synthesis of 2-hydroxypropyl methacrylate via ATRP

作　　者：苏辉辉[1] 肖舒[1] 戴林[1] 何静[1] 

机构地区：[1]北京林业大学材料科学与工程学院,北京100083

出　　处：《化学试剂》2012年第9期787-791,共5页Chemical Reagents

基　　金：国家"973"计划项目(973-2010CB732204)

摘　　要：以2-溴丙酰溴为溴化剂,在离子液体([Amim]Cl)中与纤维素反应制备大分子引发剂,以溴化亚铜/五甲基二乙烯三胺(CuBr/PMDETA)为引发体系,N,N-二甲基甲酰胺(DMF)及丁酮(Butanone)为溶剂,研究了甲基丙烯酸羟丙酯的原子转移自由基聚合(ATRP)。通过FT-IR,1HNMR和GPC对聚合物进行了分析,考察了聚合反应的活性特征,反应时间、催化体系、溶剂对聚合物分子量及分子量分布的影响。结果表明,反应转换率随时间呈线性增加,且合成反应是可控活性聚合。Cellulose-graft-PHPMA copolymers were prepared by homogeneous atom transfer radical polymerization under mild condition in an attempt to develop an efficient way to modify the surface of cellulose. The reaction macroinitiator is prepared with 2-bromopropionyl bromide＇ and cellulose in ion- ic liquids [ Amim ] Cl,and followed by cellulose-Br/PMDETA as macroinitiator,N,N-dimethylformamide（DMF） as solvent. The atom transfer radical polymerization of HPMA and ana- lyzed the polymer by FT-IR and ^1 HNMR. The grafted PHPMA chain was obtained by the hydrolysis of the cellulose back- bone and analyzed by GPC. The experiment studied effect of living features of the polymer, reaction time, catalytic system and solvent on the polymer molecular weight and molecular weight distribution. The results show that conversion rate of reaction increases linearly with time, and its polymerization process is controlled.

关 键 词：原子转移自由基聚合 离子液体 纤维素 甲基丙烯酸羟丙酯 

分 类 号：O636.1[理学—高分子化学]