FEATURES OF THE INTERACTION OF INTERGEL SYSTEMS BASED ON POLYACRYLIC ACID AND POLY-2-METHYL-5-VINYLPYRIDINE WITH GOLD IONS

Abstract

Introduction. In the interpolymer system of polyacrylic acid and poly-2-methyl-5-vinylpyridine, the change in the mutual activation of polymer hydrogels with different degrees of crosslinking as a result of remote interaction of the two hydrogels was determined, and their effect on the process of gold ion sorption was studied [1,2]. The purpose aim of the work is to study the sorption capacity of intergel systems based on poly-2-methyl-5-vinylpyridine and polyacrylic acid in relation to gold ions [3,4]. The obtained results The maximum degree of sorption of the gPAA:gP2M5VP interpolymer systems increased to 0.645 mol/L at a polymer molar ratio of 5:1 within 48 hours of interaction, and then gradually decreased to 0.575 mol/L. The maximum pH values of the intergel system gPAA:gP2M5VP are observed at a ratio of 3:3, corresponding to a pH of 2.99. The minimum pH value is 2.96 at a ratio of 2:4. The overall swelling ratio (Ksw) increases from 0.8 to 3 during the conformational rotation of the interstitial unit. Conclusion. According to the results, the electrochemical properties of hydrogels of polyacrylic acid and poly-2-methyl-5-vinylpyridine in the interpolymer system were studied and the optimal molar ratios were determined. Thus, as a result of these studies: the obtained experimental data on specific electrical conductivity of the solution, pH of the medium and swelling coefficient of hydrogels showed that the presence of remote interaction between acrylic acid and 2-methyl-5-vinylpyridine hydrogels has a significant effect on the initial polymer network and physicochemical properties of the solution.