Self-Assembly in Mixtures of Polymers and Small Associating Molecules
Self-Assembly in Mixtures of Polymers and Small Associating Molecules
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DOI：
10.1021/ma991021k
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发表时间：
1999-06
期刊：
影响因子：
5.5
通讯作者：
H. Diamant;D. Andelman
中科院分区：
文献类型：
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作者：
H. Diamant;D. Andelman
从理论上考虑了良溶剂中柔性高分子与较小的缔合溶质分子如两亲物（表面活性剂）之间的相互作用。吸引力的相关性，在聚合物中诱导的相互作用，竞争与链内排斥，并最终驱动联合自组装的两个物种，伴随着部分崩溃的链。分析的结果被认为是在良好的协议与实验的发病自组装在不同的聚合物-表面活性剂系统。在混合体系中自组装的阈值浓度（临界聚集浓度，cac）总是低于无聚合物溶液中的阈值浓度（临界胶束浓度，cmc）。几个自组装制度的区别，这取决于两个物种之间的有效相互作用。对于强相互作用，实验上对应于带相反电荷的物种，cac远低于cmc。它与离子强度增加，并只依赖于弱...
The interaction between a flexible polymer in a good solvent and smaller associating solute molecules such as amphiphiles (surfactants) is considered theoretically. Attractive correlations, induced in the polymer because of the interaction, compete with intrachain repulsion and eventually drive a joint self-assembly of the two species, accompanied by partial collapse of the chain. Results of the analysis are found to be in good agreement with experiments on the onset of self-assembly in diverse polymer−surfactant systems. The threshold concentration for self-assembly in the mixed system (critical aggregation concentration, cac) is always lower than the one in the polymer-free solution (critical micelle concentration, cmc). Several self-assembly regimes are distinguished, depending on the effective interaction between the two species. For strong interaction, corresponding experimentally to oppositely charged species, the cac is much lower than the cmc. It increases with ionic strength and depends only weak...