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| 嵌段共聚物微胶束行为的研究Ⅰ．体积排斥色谱法研究聚（苯乙烯－异成二烯）二嵌段共聚物在选择性溶剂中微胶束的形成过程 | |
| 引用本文： | 卜路嘉,袁国雄,李碧琳,徐种德. 嵌段共聚物微胶束行为的研究Ⅰ．体积排斥色谱法研究聚（苯乙烯－异成二烯）二嵌段共聚物在选择性溶剂中微胶束的形成过程[J]. 功能高分子学报, 1994, 0(3) |
| 作者姓名： | 卜路嘉 袁国雄 李碧琳 徐种德 |
| 作者单位： | 华东理工大学高分子材料系，中国科技大学结构分析开放实验室 |
| 摘 要： | 采用体积排斥色谱研究聚（苯乙烯－异成二烯）二嵌段共聚物在选择性溶剂－二氧六环／甲醇混合体系中以ＰＩ为核ＰＳ为壳的微胶柬形成过程，以及在正庚烷／乙酸异戊酯混合体系中以ＰＳ为核ＰＩ为壳的微胶束形成过程。讨论了温度、混合溶剂的配比和共聚物分子量对微胶束形成的影响。根据体积排斥色谱图估算了形成微胶束时的表观缔合能和微胶束的表观缔合数． |
| 关 键 词： | 体积排斥色谱，微胶柬，PS／PI二嵌段共聚物 |
The Systematic Sandy on Micellizahon Behavior of Block Copolymer 1. Study on the Micellization Behavior of Polystyrene-polyisoprene Diblock Copolymer in Selective Solvent via Size Exclusion Chromatography |
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| Bu Lujia, Yuan Guoxiong, Li Bilin, Xu Zhongde, L.J.Fetters. The Systematic Sandy on Micellizahon Behavior of Block Copolymer 1. Study on the Micellization Behavior of Polystyrene-polyisoprene Diblock Copolymer in Selective Solvent via Size Exclusion Chromatography[J]. Journal of Functional Polymers, 1994, 0(3) | |
| Authors: | Bu Lujia Yuan Guoxiong Li Bilin Xu Zhongde L.J.Fetters |
| Abstract: | The micellization behavior of a series of monodisperse polystyrene-polyisoprene (PS-PI) diblock copolymer with same composition and different molecular weight in selective solvent was studied by means of sire exclusion chromatography (SEC). Results show that the PS-PI diblock forms core-shell structure with PI as core and PS as shell in dioxane / methanol mixture while PS as core and PI as shell in heptane / isoamylacetate mixture. It is found that the formation of micelle is ialluenced by the composition of the solvents,molecular weight of the polymers and temperature. The apparent aggregation number and apparent aggregation energy of micelle were determined via SEC diagrams. |
| Keywords: | Size exclusion chromatography Micelle PS-PI diblock copolymer |
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