RT Journal Article
T1 Correlations between water uptake and effective fixed charge concentration at high univalent electrolyte concentrations in sulfonated polymer cation-exchange membranes with different morphology
A1 Barragán García, Vicenta María
A1 Pérez Haro, M. J.
AB Water uptakes properties and effective fixed charge concentration have been determined in aqueous electrolyte solutions (LiCl, NaCl and KCl) for different commercial sulfonated polymer cation-exchange membranes with different morphology. Differences in the water uptake properties and in the membrane effective fixed charge concentration has been found, which have been analyzed on the basis of the different membrane structures. The experimental results show correlations between the water uptake and the loss of the membrane selectivity at high electrolyte concentrations which are dependent on the membrane morphology. Relationships are found which permit to estimate the membrane effective fixed charge concentration from equilibrium and morphological properties with the advantage of avoiding the need for membrane potential measurements.
PB Pergamon-Elsevier Science Ltd.
SN 0013-4686
YR 2011
FD 2011-10-01
LK https://hdl.handle.net/20.500.14352/43694
UL https://hdl.handle.net/20.500.14352/43694
LA eng
NO The authors of this study gratefully acknowledge Prof. C. Larchet and Prof. V. Nikonenko for donating MK40 membrane samples, and ICTS Centro Nacional de Microscopia UCM for AFM image. Financialsupport from Universidad Complutense of Madrid under ProjectPR1/08-15918-A is also gratefully acknowledged.
NO Universidad Complutense of Madrid
DS Docta Complutense
RD 30 abr 2025