Properties of the Solution of Copolyelectrolytes Composed of Vinylalcohol and Acrylic Acid Units

Abstract

The copolyelectrolytes were prepared by the saponification of the copolymer composed of vinylacetate and methylacrylate. For the purpose of obtaining the samples homogeneous both in the composition and in the degree of polymerization, copolymerization was carried out at low conversion and especially from the monomer mixtures containing small amount of methylacrylate. The copolymer acids, obtained by the saponification of the copolyesters, were then converted into the corresponding sodium salts. Viscosity, osmotic pressure, electroconductivity and pH of these sodium salts were measured in aqueous solutions. The spatial configurations of the polymer chain and the number of the effective charge on the polymer were discussed as the functions of the composition of the copolymers and of the concentration of the solutions.