4-PEG接枝苯乙烯-马来酸酐交替共聚物的合成及功能化  

Synthesis and post-modification of 4-PEG grafted styrene and maleic anhydride alternating copolymers

作　　者：任丽霞[1] 陈永明[1] 

机构地区：[1]中国科学院化学研究所高分子物理与化学国家重点实验室,北京100190

出　　处：《中国科学（B辑）》2009年第9期950-958,共9页Science in China(Series B)

摘　　要：采用普通自由基聚合和可逆加成-断裂链转移(RAFT)自由基聚合方法合成了对位PEG取代苯乙烯(PEG-g-St)和马来酸酐的交替共聚物(P((PEG-g-St)-alt-MA)),13CNMR分析表明PEG-g-St和马来酸酐单元采取交替的序列结构.利用反应性基团-马来酸酐单元的水解以及胺解可以制备功能性的PEG聚合物.以月桂胺为模型小分子研究了该聚合物的胺解,得到4-PEG-苯乙烯与羧酸基团以及疏水烷烃的交替序列聚合物,该双亲聚合物在水溶液中形成组装体.4-PEG grafted styrene and maleic anhydride altemating copolymers were synthesized via traditional radical polymerization and reversible addition-fragmentation chain transfer （RAPT） mediated radical polymerization. The alternating structure was confirmed by 13C NMR analyses. Moreover, functional PEG grafted copolymers were synthesized by hydrolysis or aminolysis of anhydride groups. With dodecylamine as model amine, the aminolysis of maleic anhydride group was studied and the resulted copolymers show amphiphilic properties.

关 键 词：自由基聚合 聚乙二醇 交替共聚物 自组装 

分 类 号：O631.3[理学—高分子化学]