CAREER: Structure and Rheology of Soft Attractive Colloids: Interactions Due to Bridging Polymers and Applications to Fluorocarbon Gels

abstractcts - 0238873。BhatiaU。这个项目的重点是研究软吸引凝胶的结构和流变学。提出的具体体系是氟碳水乳液，其中凝胶过渡是由吸引聚合物桥接相互作用产生的。PI将进行流变学、中子散射和动态光散射测量，以确定相互作用力和凝胶结构的性质。通过改变聚合物的浓度和分子量来控制桥接引力的大小和范围。除了实验之外，PI还提出了理论实验来预测桥接吸引力的大小，并改进现有的模型，以包括聚合物链本身之间的相互作用。

ABSTRACTCTS-0238873S. BhatiaU. of Massachusetts AmherstThis project is focused on investigating the structure and rheology of soft attractive gels. The specific system proposed is water-in-fluorocarbon emulsions in which the gel transition is produced by attractive polymer bridging interactions. The PI will perform rheology, neutron scattering and dynamic light scattering measurements to determine the nature of the interaction forces and the gel structure. The concentration and molecular weight of the polymer will be varied to control the magnitude and range of the bridging attraction. In addition to the experiments, the PI proposes theoretical experiments to predict the magnitude of the bridging attraction and to improve the available model to include interactions between the polymer chains themselves.