U.S.-Czechoslovakia Polymer Research on Polyelectrolyte Structure and Dynamics

美捷聚合物聚电解质结构与动力学研究

• 批准号: 9220299
• 负责人: Eric Amis
• 金额: $ 1.54万
• 依托单位: University of Southern California
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-01-15 至 1995-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9220299&HistoricalAwards=false
• 关键词: U.S.; Czechoslovakia; Polymer; Research; Polyelectrolyte

This U.S.-Czechoslovakia research project between Dr. Eric J. Amis of the University of Southern California and Dr. Marian Sedlak of the Institute of Experimental Physics, Slovak Academy of Sciences, Kosice will examine the properties of polyelectrolytes in solution without added salt. Unscreened electrostatic interactions influence polyelectrolyte behavior in complex and specific ways. In this work, the researchers combine two proven methods for investigating polymer dynamics: dynamic light scattering and dynamic viscoelasticity. The combination, with overlapping time windows and unique sensitivities, should reduce the difficulties of interpreting either experiment alone. The researchers will also study the mechanism of formation of multichain domains in polyelectrolytes, with emphasis on the dependence of polyelectrolyte structure and dynamics on concentration, molecular weight, charge density, electrostatic screening, chain conformation, and solvent dielectric permitivities. This project in polymer research fulfills the program objective of advancing scientific knowledge by enabling leading experts in Eastern Europe and the United States to combine complementary talents and pool resources in areas of strong mutual interest and competence.

这个美国-捷克斯洛伐克的研究项目之间的博士埃里克J。 南加州大学的埃米斯和玛丽安博士 Sedlak，斯洛伐克科学院实验物理研究所， 科学，科希策将研究聚电解质的性质， 溶液不添加盐。 非屏蔽静电相互作用 以复杂而具体的方式影响行为。 在这项工作中，研究人员联合收割机结合了两种经过验证的方法， 研究聚合物动力学：动态光散射和 动态粘弹性 时间重叠的组合 窗口和独特的敏感性，应减少的困难， 单独解释实验。 研究人员还将 研究 多链结构域的形成机制 聚电解质，重点是依赖于 浓度、分子结构和动力学 重量，电荷密度，静电屏蔽，链构象， 和溶剂介电常数。 该聚合物研究项目实现了以下计划目标： 促进科学知识，使领先的专家， 东欧与美国要联合收割机互补 在共同感兴趣的领域汇集人才和资源， 能力。