RT Journal Article
T1 Study of the internal morphology of cation-exchange membranes by means of electroosmotic permeability relaxations.
A1 Barragán García, Vicenta María
A1 Izquierdo Gil, María Amparo
A1 Godino Gómez, María Paz
A1 García Villaluenga, Juan Pedro
AB The effect of an ac sinusoidal perturbation of known amplitude and frequency superimposed to the usual dcapplied electric voltage difference on the electroosmotic flow through three cation-exchange membranes with different morphology has been studied. A dispersion of the electroosmotic permeability on the frequency of the applied ac signal has been found for the three membranes investigated, observing that the electroosmotic permeability reaches maximum values for some characteristic values of the frequency. These characteristic frequency values, which are related to relaxation processes in heterogeneous media, depend on the membrane system and permit to obtain information about the different structures of the membrane system. Thus, the study of the electroosmotic permeability relaxation can be used as a method to study the internal morphology of a cation-exchange membrane in a given electrolyte medium.
PB Amer Chemical Soc
SN 1520-6106
YR 2009
FD 2009-10-01
LK https://hdl.handle.net/20.500.14352/43716
UL https://hdl.handle.net/20.500.14352/43716
LA eng
NO © 2009 American Chemical Society. Financial support from the UniversityComplutense of Madrid under Project No. PR1/08-15918-A isgratefully acknowledged. Professors C. Larchet and V. Nikonenko are gratefully acknowledged for donating MK40samples
NO University Complutense of Madrid
DS Docta Complutense
RD 8 abr 2025