Studies with model membranes

Part XXIV. — Evaluation of Fixed Charge Density and Test of Membrane Potential and Bi-ionic Potential Theories Based on Thermodynamics of Irreversible Processes

Membrane Research Laboratory, Division of Physical Chemistry, Department of Chemistry, Aligarh Muslim University, Aligarh, 202001 India.

Abstract

The thermodynamically effective fixed charge density of polystyrene moulded membranes have been determined by the most recent method of Nagasawa et al. The theoretical equations based on non equilibrium thermodynamics for membrane potential and bi-ionic potential derived by Toyoshima and Nozaki have also been applied and tested with polystyrene moulded membranes. It was found that the theoretically calculated bi-ionic potentials agree well with the experimentally observed values.

Résumé

Nous avons déterminé la densité de charge fixe thermodynamiquement effective de membranes moulées de polystyrène, par la plus récente méthode de Nagasawa. Nous avons appliqué et vérifié pour ces membranes les équations théoriques que Toyoshima et Nozaki ont obtenues pour le potentiel de membrane et pour le potentiel bi-ionique en déséquilibre thermodynamique.