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Modification of Nafion membranes by incorporation of cationic polymers for reduction of methanol permeability

  • Materials (Organic, Inorganic, Electronic, Thin Films), Polymer, Fluidization, Particle Technology
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Abstract

A small amount of basic polymer was incorporated in the Nafion membrane. Compared with the re-cast Nafion membrane, the Nafion/basic polymer membrane reduced the methanol permeability considerably. The equilibrium water uptake and proton conductivity decreased, but the thermal and mechanical stability was enhanced with increasing concentration of basic polymer. These property changes were caused by formation of cation/anion complex between acidic Nafion and basic polymer molecules. The effects of the types and molecular weights of basic polymers on the methanol permeability and proton conductivity were not significant.

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Authors and Affiliations

  1. Department of Chemical Engineering, Polymer Technology Institute, Sungkyunkwan University, Suwon, Gyunggi, 440-746, Korea

    Dong Hoon Kang & Dukjoon Kim

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  1. Dong Hoon Kang
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  2. Dukjoon Kim
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Correspondence to Dukjoon Kim.

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Kang, D.H., Kim, D. Modification of Nafion membranes by incorporation of cationic polymers for reduction of methanol permeability. Korean J. Chem. Eng. 24, 1101–1105 (2007). https://doi.org/10.1007/s11814-007-0128-1

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  • DOI: https://doi.org/10.1007/s11814-007-0128-1

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