Dielectric Permittivity Properties of Hydrated Polymers: Measurement and Connection to Ion Transport Properties

被引:29
作者
Chang, Kevin [1 ]
Geise, Geoffrey M. [1 ]
机构
[1] Univ Virginia, Dept Chem Engn, 102 Engineers Way,POB 400741, Charlottesville, VA 22904 USA
基金
美国国家科学基金会;
关键词
CONTINUUM SOLVENT MODEL; REDOX-FLOW BATTERIES; RELAXATION SPECTROSCOPY; EXCHANGE MEMBRANES; WATER SORPTION; COMPLEX PERMITTIVITY; DIMETHYL-SULFOXIDE; NAFION; PERMEABILITY; DIFFUSION;
D O I
10.1021/acs.iecr.9b03950
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Polymer membranes are important for a range of aqueous solution-based technologies that require controlled rates of ion transport. Advanced membranes will need to be engineered at the molecular level to control interactions among the polymer, sorbed water, and ions that come into contact with the membrane. Currently, little is known about the nature of these interactions, and broadband microwave dielectric relaxation spectroscopy (DRS) is a tool that could provide critical dielectric permittivity property information to facilitate modeling and understanding of the ion sorption and transport properties of hydrated polymer membranes. A handful of microwave DRS studies on hydrated polymers are reported in the literature, and these studies represent a critical first step toward using DRS to unlock important structure-property relationships. This review discusses microwave DRS and research focused on understanding the influence of polymer chemistry and water content on relative permittivity and ion transport properties of hydrated polymer membranes.
引用
收藏
页码:5205 / 5217
页数:13
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