PHYSICOCHEMICAL CHARACTERIZATION OF ANION-EXCHANGE RESINS BASED ON POLYVINYL CHLORIDE (PVC) AND POLYVINYL AMINE (PVA)
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Yusupov Farkhod, Yakhshiyeva Yulduzkhon, Yusupov Sukhrob, Temirov Golib
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This study presents the synthesis and physicochemical characterization of an anion-exchange resin based on polyvinyl chloride (PVC) and polyvinyl alcohol (PVA). The resin was prepared by blending PVC and PVA in varying ratios, followed by chemical cross-linking with epichlorohydrin and functionalization with trimethylamine to introduce quaternary ammonium groups. The resulting materials were evaluated for ion-exchange capacity (IEC), swelling behavior, surface morphology, and functional group identification using FTIR, SEM, and EDS analyses. Among the synthesized formulations, the resin with a 60:40 PVC:PVA ratio exhibited the highest IEC value (1.45 meq/g) and the greatest swelling ratio (45.7%), indicating an optimal balance between hydrophilicity and structural integrity. These findings suggest that PVC–PVA-based composite resins have strong potential as cost-effective and efficient anion-exchange materials for use in water treatment and other environmental applications.
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Authors
Yusupov Farkhod, Yakhshiyeva Yulduzkhon, Yusupov Sukhrob, Temirov Golib
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