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Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/61537
Title: Electrochemical properties of ion-exchange membranes based on sulfonated EPDM-polypropylene blends
Authors: Compañ, Vicente; Fernández-Carretero, F. J.; Riande, Evaristo
Keywords: polymer blends
compression moulding
ion exchange
ionic conductivity
Issue Date: 2007
Publisher: Electrochemical Society
Citation: Journal of Electrochemical Society 154 (2) : B159-B164 (2007)
Abstract: The preparation of cation-exchange membranes by compression molding of sulfonated EPDM-polypropylene blends is described. Concentration potentials measured in a two-compartmental cell with configuration Formula solution Formula membrane∕ Formula solution Formula Formula ., are a linear function of Formula (=Formula , where Formula and Formula are, respectively, the concentration and activity coefficient of the solution in compartment 2 keeping constant the concentration in compartment 1, Formula . The values of the proton transport numbers, Formula , decrease from 0.99 to 0.94 when the ratio Formula increases from 0.1 to 5, nearly the same decrease reported for Nafion 117 in the same variation of concentration ratios. Proton conductivities at Formula are Formula and Formula , respectively, for water-saturated membranes containing 20 and 10% of polypropylene, more than one decade below the value reported in the literature for the conductivity of Nafion membranes at the same temperature. These conductivities at Formula amount to Formula and Formula , respectively
Publisher version (URL): http://dx.doi.org/10.1149/1.2398818
URI: http://hdl.handle.net/10261/61537
DOI: 10.1149/1.2398818
ISSN: 0013-4651
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