Chemical Problems; 2026; V. 24(4); p. 635-644
CREATING THEORETICAL AND PRACTICAL FOUNDATIONS FOR OBTAINING ANANION EXCHANGER BASED ON PVC AND PVAm
1 Institute of General and Inorganic Chemistry of the Academy of Sciences of the Republic of Uzbekistan, Tashkent, 100071, Uzbekistan
2 Tashkent Pharmaceutical Institute, Tashkent, 100071 Uzbekistan
3 Karshi State University, Karshi city, 180119 Uzbekistan
E-mail:
temirovgolib1995@gmail.com
Received Date: 2025-04-28
Accepted Date: 2025-10-06
Keywords:
PVC modification, PVAm, anion exchange resin, SEC, modification degree.
Notes:
Abstract: 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.