Kinetics of Micellar and Microemulsion Systems

在这个项目中，研究人员将使用停流、温度跳跃和超声吸收技术来阐明胶束溶液和微乳液的动力学方面，并将结果与这些体系的平衡性质相关联。具体地说，计划：研究增溶油对胶束溶液动力学和平衡性质的影响；阐明增溶动力学对胶束溶液中胶束化过程的影响；测量高浓度表面活性剂溶液的动力学性质，以阐明胶束-胶束相互作用和各向异性(双折射)结构的形成对松弛过程的影响；测定微乳液的动力学性质，揭示微乳液自发吸水吸油的机理。用超声波技术测定了微乳液中体相与界面之间的分子交换速率。这些测量被用来识别单相微乳液中的各种微观结构。

In this project, researchers will elucidate the kinetic aspects of micellar solutions and microemulsions using stopped-flow, temperature-jump and ultrasonic absorption techniques, and will correlate the results with equilibrium properties of these systems. Specifically, it is planned: to investigate the effect of solubilized oils on the kinetics and equilibrium properties of micellar solutions; to elucidate the influence of solubilization kinetics on the micellization process in micellar solutions; to measure kinetic properties of high concentration surfactant solutions to elucidate the effect of micelle-micelle interactions and the formation of anisotropic (birefringent) structures on relaxation processes in these systems; and to measure kinetic properties of microemulsions to delineate the mechanism of spontaneous uptake of water or oil by microemulsions. The rate of molecular exchange between bulk and the interface in microemulsions are determined using the ultrasonic technique. These measurements are used to identify various microstructures in single phase microemulsions.