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.
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