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Contreras González, José Luis ; Barragán García, Vicenta María ; Dinis Vizcaíno, Luis Ignacio ; Izquierdo Gil, María Amparo ; Mohino Harris, Elsa ; Rosado Vélez, Jaime ; Zarco Moreno, Manuel ; Álvarez Nicolás, Carlos ; Barrio Uña, Juan Abel ; Nieto Castaño, Daniel ; Rodríguez Pérez, Oscar ; Salvadores Bustamante, Diego | 2020-02-06En convocatorias anteriores de la convocatorias de Proyectos de Innovación Docente de l UCM, la última de ellas correspondiente a 2014, desarrollamos un Catálogo de experiencias de cátedra para la docencia de Física General, OSCAR. En esta edic[...]texto impreso
Chronopotentiometric and swelling experiments have been conducted to characterize the behavior of a Nafion membrane in NaCl and KCl aqueous solutions without and with glucose. A mixture solution with similar composition to the cerebrospinal flui[...]texto impreso
Barragán García, Vicenta María ; García Villaluenga, Juan Pedro ; Izquierdo Gil, María Amparo ; Godino Gómez, María Paz ; Seoane Rodríguez, Benjamín ; Ruiz Bauzá, Carlos | Elsevier Science BV | 2008-10-15Liquid permeation and uptake measurements of pure water and methanol were carried out using three commercial cation-exchange membranes: Nafion-117 (perfluorinated polyethylene with pendant ether-linked side chains terminated with sulfonated grou[...]texto impreso
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. Differe[...]texto impreso
Barragán García, Vicenta María ; Ruiz Bauzá, Carlos | Academic Press Inc Elsevier Science | 2002-03-01The current-voltage curves for a cation-exchange membrane separating two equal methanol-water electrolyte solutions were determined under different experimental conditions. From these curves, the values of the limiting current density, I-L, were[...]texto impreso
Barragán García, Vicenta María ; Ruiz Bauzá, Carlos | Academic Press Inc Elsevier Science | 1998-09-15The curves (V, I) of different ion-exchange membranes have been determined under different experimental conditions. Taking into account the classical theory of concentration polarization, a method has been developed to adjust the (V, I) data, up[...]texto impreso
Dinis Vizcaíno, Luis Ignacio ; Barragán García, Vicenta María ; Contreras González, José Luis ; Barrio Uña, Juan Abel ; Godino Gómez, María Paz ; Izquierdo Gil, María Amparo ; Mohino Harris, Elsa ; Rodríguez López, Oscar ; Rodríguez Pérez, Oscar ; Zarco Moreno, Manuel | 2015-07-10En convocatorias anteriores de los PIMCD se ha desarrollado un Catálogo de experiencias de cátedra para la docencia de Física General que cuenta actualmente con más de 40 experiencias en funcionamiento disponibles en el Laboratorio de Física Gen[...]texto impreso
The salt flow through passive membranes, separating two solutions of the same electrolyte but of different concentrations, has been obtained from a method based on the determination of the electric resistance between two fixed points in the more[...]texto impreso
Barragán García, Vicenta María ; Ruiz Bauzá, Carlos ; Imaña Pascual, José Luis | Elsevier Science BV | 2002-03-01The influence of an alternating (AC) sinusoidal perturbation, of known frequency and small amplitude, superimposed to the usual applied continuous (DC) signal in a desalination electrodialysis process has been studied. The experiments were carri[...]texto impreso
Barragán García, Vicenta María ; Ruiz Bauzá, Carlos | Academic Press Inc Elsevier Science | 2001-08-01The 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 [...]texto impreso
Barragán García, Vicenta María ; Ruiz Bauzá, Carlos | Academic Press Inc Elsevier Science | 1997-11-01The water electroosmotic flux, J(v), through a cation exchange membrane has been measured as a function of the temperature, T, with various values of the electrolyte concentration and for different current densities. From these measurements the [...]texto impreso
Barragán García, Vicenta María ; Ruiz Bauzá, Carlos ; Mengual Cabezón, Juan Ignacio | Academic Press Inc Elsevier Science | 1994-12Electro-osmotic fluxes of water through two cation-exchange membranes have been measured under different experimental conditions. The influence of unstirred solution layers adjoining the membrane surfaces on the obtained values has been studied [...]texto impreso
The thermal membrane potential through a cation-exchange membrane has been determined under different experimental situations. In all cases, a good linear dependence between the thermal membrane potential, Delta psi, and the temperature differen[...]texto impreso
Barragán García, Vicenta María ; García Villaluenga, Juan Pedro ; Morales Villarejo, Victor ; Izquierdo Gil, María Amparo | Multidisciplinary Digital Publishing Institute | 2020-06The aim of this work is to apply linear non-equilibrium thermodynamics to study the electrokinetic properties of three cation-exchange membranes of different structures in ethanol-water electrolyte solutions. To this end, liquid uptake and elect[...]texto impreso
Barragán García, Vicenta María ; Ruiz Bauzá, Carlos | Academic Press Inc Elsevier Science | 2000-10-15Electroosmosis 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 ampli[...]
