Effect of Electrolyte Concentration on Viscous Flow of Polymer Solutions

Abstract

The viscosity of potassium chloride in a mixture of poly(vinyl alcohol) and water (1.0 g·L-1 to 5.0 g·L-1) was measured at different concentrations of the solute (1.0 × 10-2 to 9.0 × 10-2) mol·dm-3at various temperatures ranging from 303 K to 323 K at intervals of 5 K. Ionic interactions in terms of Jones−Dole coefficients A and B were interpreted as a function of salt concentration, polymer concentration, and temperature. The negative values of the B-coefficient led to the conclusion that potassium chloride solution in aqueous polyvinyl alcohol behaves as a structure maker.