聚苯乙烯-b-聚嵌段共聚物的合成及其化学反应诱导自组装研究  

The Preparation of Polystyrene-b-Poly(Styrene-alt-Maleic Anhydride)Block Copolymer and its Reaction-Induced Self-Assembly Behaviors

作　　者：郭小群[1] 

机构地区：[1]四川理工学院邓关校区化学系,自贡643033

出　　处：《四川大学学报（自然科学版）》2006年第5期1097-1100,共4页Journal of Sichuan University(Natural Science Edition)

基　　金：四川省教育厅重点专项基金(2005D007);四川理工学院2006年教改项目(JG-0619)

摘　　要：采用RAFT可控自由基聚合方法,合成了由苯乙烯和马来酸酐/苯乙烯交替序列组成的两嵌段共聚PST101-b-P(MA-alt-ST)29;用1HNMR和GPC对共聚物的结构组成进行表征,将其中的马来酸酐用氨基丙基甲氧基硅烷进行氨解开环,得到含有甲氧基硅烷侧基的嵌段共聚物.进一步在碱性催化剂三乙胺的作用下,侧基上的硅氧烷迅速水解反应,并发生聚集.该聚集由于受到可溶性的聚苯乙烯链段的辅助,不会形成宏观的沉淀,而是通过化学反应诱导自组装过程,一步获得聚合物———二氧化硅有机/无机纳米杂化粒子,用动态光散射和透射电镜对所形成的纳米粒子进行了详细表征.The RAFT polymerization method was used for the preparation of a well defined diblock copolymer has styrene segments and alternating maleic anhydride/styrene segments. The moiety of maleic anhydride in copolymer was ammonolysis by APS to get novel diblock copolymers precursor bears reactive trimethoxysilane groups. Under a base catalyst, trimethoxysilane groups undergo hydrolyzation and condensation into insoluble crosslinked polysilsesquioxane, with the help of soluble polystyrene block, organic/inorganic hybrid nanopartides were formed through reaction induced self-assembly induced. The formed hybrid nanoparticles were characterized through dynanmic light scattering and TEM.

关 键 词：嵌段共聚物 反应诱导自组装 杂化纳米粒子 

分 类 号：O621.3[理学—有机化学]