CREATING THEORETICAL AND PRACTICAL FOUNDATIONS FOR OBTAINING ANANION EXCHANGER BASED ON PVC AND PVAm

The modification of polyvinyl chloride (PVC) with polyvinylamine (PVAm) via nucleophilic substitution was systematically optimized to obtain an efficient anion-exchange resin. The most effective structural transformation was achieved at a PVC:PVAm molar ratio of 1:1.25, at which the substitution of chlorine atoms by amino groups was maximized. Under these conditions, the degree of modification reached approximately 83.5%, indicating substantial incorporation of functional amine groups into the polymer backbone. Furthermore, the modified resin exhibited a high static exchange capacity (SEC) of 2.97 meq g⁻¹, confirming its excellent ion-exchange performance. These results demonstrate that the synthesized material is a promising candidate for applications in water purification and ion-separation processes requiring high anion-exchange efficiency. The nucleophilic substitution pathway ensures effective functionalization while maintaining chemical stability and practical applicability.

Ҳали таржима қилинмаган