Universidad Complutense de Madrid
E-Prints Complutense

Electroosmosis through a cation-exchange membrane: Effect of an ac perturbation on the electroosmotic flow

Impacto

Descargas

Último año

Barragán García, Vicenta María y Ruiz Bauzá, Carlos (2000) Electroosmosis through a cation-exchange membrane: Effect of an ac perturbation on the electroosmotic flow. Journal of Colloid and Interface Science, 230 (2). pp. 359-366. ISSN 0021-9797

[img] PDF
Restringido a Sólo personal autorizado del repositorio

107kB

URL Oficial: http://dx.doi.org/10.1006/jcis.2000.7063


URLTipo de URL
http://pdn.sciencedirect.com/Editorial


Resumen

Electroosmosis experiments through a cation-exchange membrane have been performed using NaCl solutions in different experimental situations. The influence of an alternating (ac) sinusoidal perturbation, of known angular frequency and small amplitude, superimposed to the usual applied continuous (dc) signal on the electroosmotic Row has been studied. The experimental results show that the presence of the ac perturbation affects the electroosmotic flow value, depending on the frequency of the ac signal and on the solution stirring conditions. In the frequency range studied, two regions have been observed where the electroosmotic Row reaches a maximum value: one at low frequencies (similar to Hz); and another at frequencies of the order of kHz. These regions could be related to membrane relaxation phenomena.


Tipo de documento:Artículo
Información Adicional:

© 2000 by Academic Press. Financial support from the University Complutense of Madrid under Project
PR49/98-7756 is gratefully acknowledged.

Palabras clave:Cellulose-Acetate Membranes, Impedance, Permeability, Dependence, Phases, Water.
Materias:Ciencias > Física > Termodinámica
Código ID:21072
Depositado:30 Abr 2013 12:03
Última Modificación:11 Mar 2016 18:47

Descargas en el último año

Sólo personal del repositorio: página de control del artículo