Microstructure and Transport-Selectivity Properties of Ion Exchange Polymers

离子交换聚合物的微观结构和传输选择性性能

• 批准号: 8815936
• 负责人: Johna Leddy
• 金额: $ 14.03万
• 依托单位: CUNY Queens College
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-04-01 至 1991-10-22
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8815936&HistoricalAwards=false
• 关键词: Microstructure; Transport; Selectivity; Properties; Ion

This project is in the general area of analytical and surface chemistry and in the subfield of mass transport through ion exchange polymer films. Different microstructures of ion exchange polymers, which exhibit local short range order (5 to 100 nanometers), will be induced through thermal processing as well as by sorption in microstructured substrates such as polycarbonate membranes and latex spheres. The microstructure of the polymer layer will be evaluated by infrared and X-ray spectroscopies and its transport-selectivity determined by electrochemical methods. Mathematical models will be developed for the relationships between these properties. Mass transport through ion exchange membranes and its enhancement through electrostatic effects is an important field both scientifically and technologically, with implications for biological systems. Development of generalized relationships describing their transport characteristics will facilitate optimization of separators for specific applications, design of catalysts with active sites situated in microstructured matrices that control the transport of selected species, and fabrication of modified electrodes for electrochemical catalysis and analysis.

该项目位于分析和表面化学的一般领域以及通过离子交换聚合物膜的大众传输子场。 离子交换聚合物的不同微观结构将通过热处理以及通过微结构底物（如聚碳酸酯膜和乳胶球）的吸附来诱导局部短距离顺序（5至100纳米）。 聚合物层的微观结构将通过红外和X射线光谱及其传输选择性评估，并通过电化学方法确定。 将为这些属性之间的关系开发数学模型。 通过离子交换膜的大规模运输及其通过静电效应增强是科学和技术上的重要领域，对生物系统具有影响。 描述其运输特征的广义关系的发展将促进针对特定应用的分离器的优化，与位于微观结构矩阵中的活性位点的催化剂设计，这些矩阵控制着所选物种的运输，以及用于电化学催化的改良电极的制造。