The Rheology of Concentrated Micellar Solutions and Colloidal Dispersions

摘要了解高浓度胶束和胶体体系的线性和非线性流变学并对其进行定量建模具有重要意义。拟议研究的目标是用规定的流变学重复配制两种类型的体系。这些是遥望聚合物的高度粘性和粘弹性胶束溶液，以及含有末端接枝的链形成刷子的纳米颗粒。虽然人们已经做了大量的工作来了解缔合聚合物的行为，但这项研究将提供对胶束潜在结构的基本理解。关于这种纳米刷状颗粒的流变学信息很少。因此，这项研究将为软颗粒的流变学提供新的和令人兴奋的见解，软颗粒可能会随着浓度和应力场的不同而发生异常变化。

AbstractCTS-0120421RusselIt is important to understand and quantitatively model the linear and nonlinear rheology of highly concentrated micellar and colloidal systems. The goal of the proposed research is to reproducibly formulate two types of systems with prescribed rheology. These are the highly viscous and viscoelastic micellar solutions of telechetic polymers, as well as nanosize particles bearing terminally grafted chains that form brushes. Although considerable work has been done to understand the behavior of associative polymers, this study will provide the fundamental understanding of the underlying structure of the micelles. There is little information on the rheology of the nanosized brush-like particles. Therefore, this study should provide new and exciting insight in the rheology of soft particles with the potential for unusual variations with concentration and the stress field.