Features of the formation of interpolymer complexes of poly(carboxylic acids) and nonionic polymers in aqueous solutions in the presence of low-molecular-mass electrolytes

• Published in: Polymer science. Series A, Chemistry, physics Vol. 58; no. 6; pp. 944 - 955
• Main Authors: Mun, G. A., Suleimenov, I. E., Yermukhambetova, B. B., Vorob’eva, N. A., Irmukhametova, G. S.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-11-2016
• Subjects: Chemistry; Chemistry and Materials Science; Polyelectrolytes; Polymer Sciences
• ISSN: 0965-545X; 1555-6107
• DOI: 10.1134/S0965545X16060134

The published experimental data on the interpolymer reactions that involve nonionic polymers and poly(carboxylic acids) in aqueous solutions in the presence of low-molecular-mass electrolytes have been analyzed. A theoretical approach that allows one to interpret the character and direction of a shift in the critical pH values of the complexation reaction due to the effect of low-molecular-mass electrolyte has been proposed. It has been found that the character of interactions between poly(carboxylic acids) and nonionic polymers in the presence of a low-molecular-mass salt is significantly influenced by the processes of local ion exchange resulting in the heterogeneous distribution of low-molecular-mass ions throughout the solution volume.