聚苯乙烯-b-聚丙烯酸/聚苯乙烯-b-聚甲基丙烯酸氨基丙二醇酯二元胶束的杂化作用  

Interaction Between the Bimodal Micelles Self-assembled by PS-b-PAA and PS-b-PAPMA

作　　者：张望清[1] 史林启[1] 安英丽[1] 高立超[1] 刘珍[1] 沈旭东[1] 张邦华[1] 何炳林[1] 

机构地区：[1]南开大学高分子研究所

出　　处：《高等学校化学学报》2004年第5期952-956,共5页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金 (批准号 :5 0 2 73 0 15 )资助

摘　　要：用光散射技术和透射电镜研究了聚苯乙烯 -b-聚甲基丙烯酸氨基丙二醇酯胶束和聚苯乙烯 -b-聚丙烯酸胶束在水中的相互作用 .结果表明 ,壳层带有氨基和羟基的聚苯乙烯 -b-聚甲基丙烯酸氨基丙二醇酯胶束和壳层带有羧基的聚苯乙烯 -b-聚丙烯酸胶束在水中可以通过胶束之间的链交换形成壳层结构致密的杂化胶束 ,温度的升高有助于胶束之间链交换的进行 。The interaction between the binary micelles self-assembled by polystyrene-block-poly(acrylic acid) (PS-b-PAA) and polystyrene-block-poly(amino propylene-glycol methacrylate) (PS-b-PAPMA) in water was discussed in this paper. The results show the interaction between the binary micelles under a suitable condition results in the formation of a kind of special micelles called half-bred micelles through polymer chain exchanging between PS-b-PAA micelles and PS-b-PAPMA in water. A possible mechanism of chain exchanging is suggested for formation of the half-bred micelles.

关 键 词：聚苯乙烯-b-聚丙烯酸 聚苯乙烯-b-聚甲基丙烯酸氨基丙二醇酯 二元嵌段共聚物 杂化胶束 自组装 链交换 

分 类 号：O631.5[理学—高分子化学] TB324[理学—化学]