Hybridization of Block Copolymer Micelles
Hybridization of Block Copolymer Micelles
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DOI：
10.1021/la00031a022
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发表时间：
1993-07
期刊：
影响因子：
3.9
通讯作者：
Minmin Tian;A. Qin;S. Webber;P. Munk;Z. Tuzar
中科院分区：
文献类型：
--
作者：
Minmin Tian;A. Qin;S. Webber;P. Munk;Z. Tuzar
摘要：苯乙烯和甲基丙烯酸的嵌段共聚物溶解在水/二氧六环混合物中形成具有聚苯乙烯核和聚（甲基丙烯酸）壳的球形胶束。当含有由两种不同共聚物制成的胶束的两种胶束溶液混合时，胶束可以杂交。用沉降速度法进行杂交。发现杂交速率是两种共聚物结构和溶剂混合物热力学性质的非常敏感的函数。在许多情况下，这一速率是难以察觉的慢;当溶剂相对于胶束核心非常贫乏时，它可能完全冻结。许多胶束对的杂交分析提供了新的见解的动力学和热力学的单聚物/胶束平衡。（作者）
Abstract : Block copolymers of styrene and methacrylic acid dissolved in water/ dioxane mixtures form spherical micelles with polystyrene cores and poly(methacrylic acid) shells. When two micellar solutions containing micelles made from two different copolymers are mixed, the micelles may hybridize. The hybridization was followed by the method of sedimentation velocity. The rate of hybridization was found to be a very sensitive function of the architecture of both copolymers and of the thermodynamic properties of the solvent mixture. In many instances this rate is imperceptible slow; it may be totally frozen when the solvent is very poor with respect to the micellar core. The analysis of the hybridization of numerous micellar pairs provided new insights into the dynamics and thermodynamics of unimer/micelle equilibria. (Author)