The effect of tannic acid on the electrical properties of the interface and the non-linear streaming potential of cellulose in a cationic dye solution

Abstract

An experimental investigation on streaming potentials of porous plugs of cellulose in both the linear and the non-linear range is described. The variation of electrokinetic coefficients with the concentration of a cationic dye in solution has been studied and the influence of mordant on the electrical properties of the interface of cellulose/cationic dye solution systems has been analysed. The second-order electrokinetic coefficients have been interpreted in terms of modifications of generalized coefficients produced by changes in thermodynamic forces.