RT Journal Article T1 Effect of an ac perturbation on the electroosmotic behavior of a cation-exchange membrane. Influence of the cation nature A1 Barragán García, Vicenta María A1 Ruiz Bauzá, Carlos AB The effect of an ac sinusoidal perturbation of known amplitude and frequency superimposed on the usual dc applied electric voltage difference on the electroosmotic flow through a typical cation-exchange membrane has been studied using different monovalent electrolytes. As a general trend, the presence of the ac perturbation increases the value of the electroosmotic flow with respect to the value in the absence of ac perturbation. A dispersion of the electroosmotic permeability on the frequency of the applied ac signal has been found for the three studied electrolytes, observing that the electroosmotic permeability reaches maximum values for some characteristic values of the frequency. This behavior may be related to the different relaxation processes in heterogeneous mediums. PB Academic Press Inc Elsevier Science SN 0021-9797 YR 2001 FD 2001-08-01 LK https://hdl.handle.net/20.500.14352/58424 UL https://hdl.handle.net/20.500.14352/58424 LA eng NO © 2001 by Academic Press. Financial support from the University Complutense of Madrid under ProjectPR49/98-7756 is gratefully acknowledged. NO Universidad Complutense de Madrid DS Docta Complutense RD 8 jun 2025