Effect of Ionic Chain Polydispersity on the Size of Spherical Ionic Microdomains in Diblock Ionomers
Effect of Ionic Chain Polydispersity on the Size of Spherical Ionic Microdomains in Diblock Ionomers
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DOI：
10.1021/ma00096a047
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发表时间：
1994-08
期刊：
影响因子：
5.5
通讯作者：
D. Nguyen;X. Zhong;C. Williams;A. Eisenberg
中科院分区：
文献类型：
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作者：
D. Nguyen;X. Zhong;C. Williams;A. Eisenberg
用小角X射线散射和透射电镜研究了聚苯乙烯-b-聚（4-乙烯基吡啶甲基碘）（PS-b-P4 VPMeI）和聚苯乙烯-b-聚（甲基丙烯酸铯）（PS-b-PMAC）两种二嵌段离聚物在干燥状态下离子链的多分散性对球形离子微区形态的影响。离子嵌段的多分散性通过共混聚苯乙烯长度恒定但离子嵌段长度不同的二嵌段共聚物来控制。将样品以适当的比例混合，使得数均分子量恒定，但在离子嵌段中获得宽范围的多分散性。用三种不同的方法制备样品
The effect of ionic chain polydispersity on the morphology of spherical ionic microdomains in the dry state is studied by SAXS and TEM for two systems of diblock ionomers, polystyrene-b-poly(4-vinylpyridinium methyl iodide) (PS-b-P4VPMeI) and polystyrene-b-poly(cesium methacrylate) (PS-b-PMACs). The polydispersity of the ionic block is controlled by blending diblock copolymers of constant polystyrene length but different ionic block lengths. The samples are mixed in appropriate ratios so that the number-average molecular weight is constant but a wide range of polydispersity in the ionic blocks is obtained. The samples are prepared by three different methods