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-捷克斯洛伐克研究项目由南加州大学的 Eric J. Amis 博士和科希策斯洛伐克科学院实验物理研究所的 Marian Sedlak 博士合作，将研究不添加盐的溶液中聚电解质的特性。 未屏蔽的静电相互作用以复杂且特定的方式影响聚电解质的行为。 在这项工作中，研究人员结合了两种行之有效的方法来研究聚合物动力学：动态光散射和动态粘弹性。 这种结合具有重叠的时间窗口和独特的灵敏度，应该会减少单独解释任一实验的难度。 研究人员还将研究聚电解质中多链域的形成机制，重点是聚电解质结构和动力学对浓度、分子量、电荷密度、静电屏蔽、链构象和溶剂介电常数的依赖性。 该聚合物研究项目通过使东欧和美国的领先专家能够在共同感兴趣和能力强的领域结合互补人才和汇集资源，实现了推进科学知识的计划目标。