聚苯乙烯-b-聚氧乙烯-b-聚苯乙烯三嵌段共聚物的自组装  

Self-assembly of Polystyrene-b-poly(ethylene oxide)-b-polystyrene Triblock Copolymer

作　　者：袁建军[1] 李英顺[2] 李小琴[1] 张小红 程时远[1] 江雷[2] 封麟先[3] 

机构地区：[1]湖北大学化学与材料科学学院,武汉430062 [2]中国科学院化学研究所,北京100080 [3]浙江大学高分子科学研究所,杭州310027

出　　处：《高等学校化学学报》2003年第2期371-373,共3页Chemical Journal of Chinese Universities

基　　金：国家重点基础研究发展规化 ( 973)项目 (批准号 :G19990 6 45 0 5 )资助

摘　　要：In this paper, the self-assembly of PS 43-b-PEO 45-b-PS 43 triblcok copolymer was investigated. The colloids were made by firstly dissolving the copolymer in the common solvents, including THF, 1,4-dioxane, and DMF, then droping water into the corresponding copolymer solution to induce the self-assembly. The aggregates prepared were characterized with TEM and AFM techniques. The experimental results demonstrated that the self-assembled vesicles were formed when THF and 1,4-dioxane were used as the common solvents to dissolve the copolymer, comparatively, using DMF as the common solvent resulted in the formation of spherical aggregates. The self-assembled aggregates observed, possessing hierarchical structures, could be used as either the nanostructures themselves for drug delivery systems, separations, catalysts, and so on, or templates or building blocks for more complex structures.In this paper, the self-assembly of PS 43-b-PEO 45-b-PS 43 triblcok copolymer was investigated. The colloids were made by firstly dissolving the copolymer in the common solvents, including THF, 1,4-dioxane, and DMF, then droping water into the corresponding copolymer solution to induce the self-assembly. The aggregates prepared were characterized with TEM and AFM techniques. The experimental results demonstrated that the self-assembled vesicles were formed when THF and 1,4-dioxane were used as the common solvents to dissolve the copolymer, comparatively, using DMF as the common solvent resulted in the formation of spherical aggregates. The self-assembled aggregates observed, possessing hierarchical structures, could be used as either the nanostructures themselves for drug delivery systems, separations, catalysts, and so on, or templates or building blocks for more complex structures.

关 键 词：聚苯乙烯 聚氧乙烯 聚苯乙烯 三嵌段共聚物 自组装 囊泡 分子聚集体 

分 类 号：O632.13[理学—高分子化学] O633.1[理学—化学]