Abstract

The influence of the type and amount of an inert component in perfluorinated MF-4SC sulfonic cation-exchange membrane on its equilibrium physicochemical and transport properties has been studied. The exchange capacity, water content, specific conductivity, and diffusion and electroosmotic permeability of two series of MF-4SC membranes obtained by casting from polymer solutions in dimethylformamide with variable contents of inert fluoropolymers have been investigated. A relationship between the equilibrium and dynamic hydration characteristics of the samples has been found as a result of studying water distribution over water binding energies and effective pore radii and the numbers of water transport in an external electric field. The type and content of an inert component in the perfluorinated membrane have been found to affect more significantly the state of water under equilibrium conditions than the electroosmotic water transport.

中文翻译：

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惰性含氟聚合物对MF-4SC膜平衡和动态水化特性的影响

摘要

研究了全氟MF-4SC磺酸阳离子交换膜中惰性组分的类型和用量对其平衡理化性能和传输性能的影响。研究了由惰性含氟聚合物含量不同的二甲基甲酰胺聚合物溶液浇铸而成的两个系列 MF-4SC 膜的交换容量、含水量、比电导率以及扩散和电渗渗透率。通过研究水在水结合能和有效孔隙半径上的分布以及外部电场中水传输的数量，发现了样品的平衡和动态水合特性之间的关系。已发现全氟化膜中惰性组分的类型和含量对平衡条件下水的状态的影响比对电渗水传输的影响更显着。