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

职业：软吸引胶体的结构和流变学：桥联聚合物的相互作用及其在氟碳凝胶中的应用

• 批准号: 0238873
• 负责人: Surita Bhatia
• 金额: $ 40万
• 依托单位: University of Massachusetts Amherst
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-03-01 至 2009-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0238873&HistoricalAwards=false
• 关键词: CAREER; Structure; Rheology; Soft; Attractive

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.

摘要-0238873S。巴蒂奥。马萨诸塞州阿默斯特分校该项目专注于研究柔软诱人的凝胶的结构和流变性。所提出的具体系统是氟碳水乳剂，其中凝胶转变是通过具有吸引力的聚合物桥联作用产生的。PI将进行流变学、中子散射和动态光散射测量，以确定相互作用力的性质和凝胶结构。聚合物的浓度和相对分子质量将会改变，以控制桥接吸引力的大小和范围。除了实验，PI还建议进行理论实验来预测桥联吸引力的大小，并改进现有模型，以包括聚合物链本身之间的相互作用。