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oai:docta.ucm.es:20.500.14352/437192023-08-25T14:24:13Zcom_20.500.14352_14col_20.500.14352_15

Experimental estimation of equilibrium and transport properties of sulfonated cation-exchange membranes with different morphologies Barragán García, Vicenta María García Villaluenga, Juan Pedro Godino Gómez, María Paz Izquierdo Gil, María Amparo Ruiz Bauzá, Carlos Seoane Rodríguez, Benjamín 536 Nafion Membrane Methanol Water Permeation Parameters Microstructure. Termodinámica 2213 Termodinámica © 2009 Elsevier Inc. The authors of this study gratefully acknowledge Prof. C. Larchet and Prof. V. Nikonenko for donating MK40 membrane samples. Financial support from Universidad Complutense de Madrid under Project PR1/08-15918-A is also gratefully acknowledged. Solvent uptake, hydraulic and electroosmotic permeabilities, true cation transport number, effective fixed charge concentration, and limiting current values have been determined in aqueous LiCl solutions for three commercial cation-exchange membranes with different morphologies and similar electric properties. The differences found in the equilibrium and transport properties of the membranes have been analyzed on the basis of their different structures. The experimental results show that the membrane morphology has an influence on the effect that the presence of an electrolyte has in the solvent uptake and in the liquid permeation. Differences have also been found in the polarization concentration effects, and on the loss of the membrane selectivity with the increase of the electrolyte concentration. Universiclad Complutense de Madrid Depto. de Estructura de la Materia, Física Térmica y Electrónica Fac. de Ciencias Físicas TRUE pub 2023-06-20T03:31:37Z 2023-06-20T03:31:37Z 2009-05-15 journal article https://hdl.handle.net/20.500.14352/43719 0021-9797 10.1016/j.jcis.2009.02.015 eng PR1/08-15918-A restricted access application/pdf Academic Press Inc Elsevier Science