Polyelectrolyte-Micelle Complexes

聚电解质与带相反电荷的胶体的结合 和表面是重要的生物现象， 环境过程。 结合能学是受控的 通过胶体表面电荷密度， 聚离子结合序列和德拜屏蔽长度。 所得复合物或聚集体的结构取决于， 此外，在胶体颗粒的尺寸上， 聚离子的链长，以及这两种离子的浓度 物种 这项工作描述了β-非离子/离子 胶束系统作为研究这些的范例 方面的影响. 相互作用能量学将通过建立 临界状态下各参数之间的相互关系 约束条件。 可溶性聚离子胶束的结构 将使用静态和动态光探索复合体 散射，作为两个大离子的尺寸的函数， 物种 特别感兴趣的是从内聚物的过渡 胶束结合，胶束的聚合物桥接，作为大小 胶束相对于聚离子的胶束增加。 发展的现象学关系将与 目前的理论治疗，他们的一般效用将是 评估其他带电胶体，例如二氧化硅。

The binding of polyelectrolytes to oppositely charged colloids and surfaces is important in biological phenomena and in environmental processes. The binding energetics are controlled by the colloid surface charge density, the effective charge of the polyion binding sequence, and the Debye screening length. The structure of the resultant complexes or aggregates depends, in addition, on the dimensions of the colloidal particle, the chain length of the polyion, and the concentrations of these two species. This work describes polyelectrolyte - nonionic/ionic micelle systems as a paradigm for the investigation of these effects. Interaction energetics will be explored by establishing the interrelationship among various parameters at critical binding conditions. The structure of soluble polyion-micelle complexes will be explored using static and dynamic light scattering, as a function of the dimensions of the two macroionic species. Of special interest is the transition from intrapolymer micelle binding, to polymer bridging of micelles, as the size of the micelle increases relative to that of the polyion. Phenomenological relationships developed will be compared to current theoretical treatments, and their general utility will be evaluated for other charged colloids, e.g. silica.