Study of interactions of polymer-metal complexes of three-dimensional structure depending on different factors of the external environment for identification of active centers

Abstract

The complexation of metal ions with polymer hydrogels has been studied. For the study, polyelectrolyte hydrogels based on hydroxyethyl acrylate, acrylic acid, and chitosan were synthesized, on the surface of which ions of various metals were chemisorbed with the formation of chelate complexes. The formation of complex compounds of the polymer hydrogel with ions of divalent and trivalent metals was confirmed by the data of IR spectra. The dynamics of swelling of a polyelectrolyte hydrogel based on a copolymer of acrylic acid and acrylamide has been studied. It was found that the swelling coefficient of the formed complexes depends on the nature of the transition metals: ion radius, electronegativity. New polymer-silicate composite materials have been obtained by intercalation polymerization of synthetic monomers. As a silicate component, we used the clay of the Darbazinsky deposit, previously activated with a 5% sodium carbonate solution. The composites were synthesized in the presence of a crosslinking agent at a temperature of 333.15 K for 1 hour. The formation of the target products is confirmed by the data of IR spectra and the kinetics of swelling.