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Correlation between structure and properties of cation-exchange membranes prepared by the paste method

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Abstract

By using cation-exchange membranes prepared by the paste method, a study was made of the influence of the distribution of polyvinyl chloride (PVC) on the electrical conductivity of the membranes and on the structure of the cation-exchange resin component (R-resin). Four kinds of cation-exchange membranes with different PVC contents and degrees of cross-linking were used. The experimental method involved treatment with hydrogen peroxide for selective decomposition of the R-resin. The estimated ratio of the specific electrical conductivity of the R-resin to that of the membrane varied from 2.2 to 4.4, depending upon the volume ratio of PVC in the membrane (0.33–0.45). Each of the membranes had a very high concentration of ion-exchange groups for cross-linking. This could be explained in terms of the mechanical and chemical restraint imposed by the PVC against the swelling of the R-resin. The structure of the R-resin, however, was almost independent of the PVC volume ratio over the range investigated.

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Authors and Affiliations

  1. Research and Development Division, Tokuyama Soda Co. Ltd, Mikage-cho 1-1, 745, Tokuyama City, Yamaguchi Prefecture, Japan

    M. Nishimura & Y. Mizutani

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  1. M. Nishimura
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  2. Y. Mizutani
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Nishimura, M., Mizutani, Y. Correlation between structure and properties of cation-exchange membranes prepared by the paste method. J Appl Electrochem 11, 165–171 (1981). https://doi.org/10.1007/BF00610976

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  • DOI: https://doi.org/10.1007/BF00610976

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