用ATRP法构筑核壳型梯度极性的多羟基多臂星状超支化聚合物及聚合物刷——三层聚合物刷的合成与表征  

BUILDING CORE-SHELL STAR POLYMERS AND POLYMER BRUSHES WITH HYDROXYL GROUPS AND DIFFERENT POLARITY LAYERS——THREE-LAYER POLYMER BRUSHES

作　　者：高超[1] 钱卉[1] 王寿柏[1] 孔浩[1] 王蜀珺[1] 颜德岳[1] 

机构地区：[1]上海交通大学化学化工学院,上海200240

出　　处：《高分子学报》2004年第6期884-888,共5页Acta Polymerica Sinica

基　　金：国家自然科学基金 (基金号 2 0 3 0 40 0 7;5 0 2 3 3 0 3 0 );上海市青年科技启明星计划 (基金号 0 3QB14 0 2 8)资助项目

摘　　要：设计并通过原子转移自由基聚合方法 (ATRP)合成了核壳型具有梯度极性的多羟基多臂星状聚合物刷 .端羟基超支化聚 (3 乙基 3 羟甲基氧杂环丁烷 )与 2 溴 异丁基酰溴反应制得大分子引发剂 (HP Br) ,以Cu(I)Br和N ,N ,N′ ,N′ ,N″ 五甲基二乙基三胺 (PMDETA)为催化体系 ,进行甲基丙烯酸甲酯 (MMA)的ATRP反应 ,得到以甲基丙烯酸甲酯为臂的多臂星状超支化聚合物 (HP g PMMA) .又以HP g PMMA为引发剂 ,进行甲基丙烯酸羟乙酯 (HEMA)的ATRP聚合 ,得到核壳型具有梯度极性的多羟基多臂星状超支化聚合物 (HP g PMMA b PHEMA) ,继续将其羟基官能团溴代化 (与 2 溴 异丁基酰溴反应 ) ,引发HEMA的ATRP溶液聚合 ,得到了多臂星状超支化聚合物刷 .产物的结构用1 H NMR、FTIR、GPC等进行了表征和测试 .Based on the atom transfer radical polymerization (ATRP) and the large amount of functional groups of hyperbranched polymers, core-shell multi-arm star polymer brushes with gradient polarity distribution were designed and prepared. ATRP of MMA initiated from hyperbranched macroinitiator (HP-Br) in the presence of Cu(I)Br and N, N, N', N', N'-pentamethyldiethylenetriamine (PMDETA) resulted in multi-arm star polymers (HP-g PMMA). Then ATRP of HEMA with HP-g-PMMA as polymeric initiator afforded another multi-arm star polymer with hydroxyl groups (HP-g-PMMA-b-PHEMA). Accordingly, further reaction of HP-g-PMMA-b-PHEMA with 2-bromo-isobutyrylbromide produced multi-arm star polymer initiator (TL-HPB-Br) Finally I ATRP of HEMA initiated from TL-HPB-Br gave multi-arm star polymer brusches with three-layer structures. The structure of the resultant novel objects was confirmed with H-1-NMR, FTIR and GPC.

关 键 词：ATRP 超支化聚合物 核壳型 引发剂 HEMA 羟基 乙基 合成与表征 梯度 环丁烷 

分 类 号：O631[理学—高分子化学]