DEFORMATION EFFECTS ON IONIC TRANSPORT IN POLYMERIC FILMS

When a periodical deformation is applied to a cellophane film through which an ion flux is established by a concentration gradient, an elect rical signal, synchronous with the deformation, can be detected on ele ctrodes placed on both sides of the membrane. This signal was studied as a function of the amplitude and frequency of the deformation and th e ionic concentration. Ionic resistance, permeability, water content a nd ionic concentration measurements were carried out in order to expla in the particular dependence of the signal with the ionic concentratio n. (C) 1994 John Wiley and Sons, Inc.