New Composite Proton-Conducting Membranes Based on Nafion and Cross-Linked Sulfonated Polystyrene
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New composite membranes based on commercial perfluorinated Nafion-115 membrane and cross-linked sulfonated polystyrene were synthesized and investigated. The membranes were prepared by radical polymerization of styrene in the presence of a cross-linking agent divinylbenzene in Nafion polymer matrix and subsequent sulfonation of formed polystyrene. The membranes containing approximately 5 and 10 wt % of cross-linked polystyrene with ion-exchange capacity of 1.1 to 1.3 mg-eq/g were obtained. Modification with sulfonated polystyrene leads to an increase in the moisture content and proton conductivity of membranes in the humidity range of 15 to 100 RH.
Keywordsproton-conducting membranes Nafion composites sulfonated polystyrene proton conductivity
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- 24.Safronova, E.Yu., Golubenko, D.V., Shevlyakova, N.V., D’yakova, M.G., Tverskoi, V.A., Dammak, L., Grande, D., and Yaroslavtsev, A.B., New cation exchange membranes based on cross-linked sulfonated polystyrene and polyethylene for power generation systems, J. Membrane Sci., 2016, vol. 515, p. 196.CrossRefGoogle Scholar