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Unique self-assembly behavior of amphiphilic block copolymers at liquid/liquid interfaces

机译：液/液界面在液体嵌段共聚物的独特自组装行为

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摘要

Diblock copolymers (polystyrene-b-poly(2-vinylpyridine) (PS-b-P2VP)) with different molecular weights self-assembled into various supramolecular microstructures at the polymer chloroform solution/aqueous chloroauric acid interface under different conditions. Generally, multilayered foam films composed of microcapsules with walls decorated with or without round interfacial micelles formed when using a higher concentration of aqueous solution; honeycomb monolayers appeared with decreasing aqueous solution concentration; fish net-like or labyrinthine monolayers were generated with a further decrease in aqueous concentration. The appearance of these microstructures reflects the different adsorption and self-assembling behaviors of PS-b-P2VP including interfacial micellization, encapsulation, and microphase separation under different conditions. In addition, the relative molecular weights of the two blocks and the total molecular weight of the polymers had a large effect on the adsorption and self-assembly of the polymers and on the final microstructure architecture. Furthermore, the factors that affect the adsorption rate and intermolecular interactions of the polymers and, consequentially, the self-assembling behavior and final microstructure are discussed. The catalytic activities of these composite microstructures were evaluated.
机译：二嵌段共聚物（聚苯乙烯-B-聚（2-乙烯基吡啶）（PS-B-P2VP）），不同的分子量在不同条件下将不同的分子量自组装成各种超分子微结构/在不同条件下的氯仿酸界面。通常，多层泡沫膜由微胶囊组成，微胶囊组成，当使用较高浓度的水溶液时形成有壁或无圆形界面胶束的壁;蜂窝单层出现含水溶液浓度降低;在含水浓度的进一步降低产生鱼网状或迷宫单层。这些微结构的外观反映了PS-B-P2VP的不同吸附和自组装行为，包括在不同条件下的界面胶束化，包封和微单分离。此外，这两个块的相对分子量和聚合物的总分子量对聚合物的吸附和自组装和对最终微结构的体系结构的大的影响。此外，讨论了影响聚合物的吸附速率和分子间相互作用的因素，并因此地进行了自组装行为和最终微观结构。评价这些复合微结构的催化活性。

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  • 来源
    《RSC Advances》 |2015年第6期|共9页
  • 作者

    Liu Mei; Geng Yuanyuan; Wang Qian; Lee Yong-Ill; Hao Jingcheng; Liu Hong-Guo;

  • 作者单位

    Shandong Univ Key Lab Colloid &

    Interface Chem Educ Minist Jinan 250100 Peoples R China;

    Shandong Univ Key Lab Colloid &

    Interface Chem Educ Minist Jinan 250100 Peoples R China;

    Shandong Univ Key Lab Colloid &

    Interface Chem Educ Minist Jinan 250100 Peoples R China;

    Changwon Natl Univ Dept Chem Anastro Lab Chang Won 641773 South Korea;

    Shandong Univ Key Lab Colloid &

    Interface Chem Educ Minist Jinan 250100 Peoples R China;

    Shandong Univ Key Lab Colloid &

    Interface Chem Educ Minist Jinan 250100 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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