| 苯乙烯-p-乙烯基苯甲酸两亲性嵌段共聚物在乙醇中自组装行为的电镜观察 |
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| 引用本文： | 魏柳荷,张炜程,陈宇,朱明强,杜福胜,李子臣,李福绵. 苯乙烯-p-乙烯基苯甲酸两亲性嵌段共聚物在乙醇中自组装行为的电镜观察[J]. 高分子学报, 2002, 0(4): 548-551 |
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| 作者姓名： | 魏柳荷 张炜程 陈宇 朱明强 杜福胜 李子臣 李福绵 |
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| 作者单位： | 北京大学化学与分子工程学院高分子科学与工程系,北京,100871 |
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| 基金项目： | 国家自然科学基金项目 (基金号 5 0 0 0 3 0 0 1)，教育部博士点研究基金项目 (项目号 990 0 0 13 1) |
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| 摘 要： | 两亲性嵌段共聚物在只对其中一链段为良溶剂的选择性溶剂中 ,能够自组装形成胶束 .胶束的形态和尺寸大小依赖于两链段的性质 ,共聚物的组成、浓度、溶剂的性质等[1] .这一性质使得嵌段共聚物在分子识别、药物和其他物质的输送、基因疗法、水系涂料、污染物的除去、纳米复合材料的制备、催化剂以及传感器等方面展示着潜在的应用前景 .因此 ,两亲性嵌段共聚物的合成及其在选择性溶剂中的自组装行为的研究近年来颇受关注[2 ] .依据两链段的比例不同 ,嵌段共聚物可形成星状胶束和“板寸头”(Ｃｒｅｗ ｃｕｔ)型胶束[3 ] .当可溶段远比不溶段长时…
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| 关 键 词： | 两亲性嵌段共聚物 苯乙烯p乙烯基苯甲酸嵌段共聚物 胶束 自组装 |
| 修稿时间： | 2001-12-27 |
STUDY ON SELF-ASSEMBLY OF POLYSTYRENE-b-POLYVINYLBENZOIC ACID IN ETHANOL |
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| WEI Liuhe,ZHANG Weicheng,CHEN Yu,ZHU Mingqiang,DU Fusheng,LI Zichen,LI Fumian. STUDY ON SELF-ASSEMBLY OF POLYSTYRENE-b-POLYVINYLBENZOIC ACID IN ETHANOL[J]. Acta Polymerica Sinica, 2002, 0(4): 548-551 |
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| Authors: | WEI Liuhe ZHANG Weicheng CHEN Yu ZHU Mingqiang DU Fusheng LI Zichen LI Fumian |
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| Abstract: | Self assembly of an amphiphilic diblock copolymer polysyrene b polyvinylbenzoic acid in ethanol,which is a selective solvent for the polybenzoic acid segment was studied by means of transmission electron microscopy.The diblock copolymers can self assemble into nano scale aggregates with polystyrene segment as the core and polyvinylbenzoic acid segment as the corona.The morphology of the aggregates is mainly controlled by the ratio of the two segment of the diblock copolymer.As the content of the ethanol insoluble polystyrene segment increased,the morphology can be changed from spheres to rods.The diameter of the aggregates increases slightly with concentration and decreases with the addition of CoCl 2 salt. |
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| Keywords: | Amphiphilic diblock copolymers Polystyrene b polyvinylbenzoic acid Self assembly Aggregates Morphology |
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