Email this article Study of Acid-Base Properties of Polymer Sorbents Based on Rhodanine Derivatives
- Authors: Uvaisova S.M.1, Babuev M.A.2
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Affiliations:
- Dagestan Federal Research Center of the Russian Academy of Sciences (CIBR DFRC RAS)
- DSU
- Issue: Vol 15, No 2 (2025)
- Pages: 148-155
- Section: Аналитика веществ и материалов
- URL: https://journals.eco-vector.com/2227-572X/article/view/685526
- DOI: https://doi.org/10.22184/2227-572X.2025.15.2.148.155
- ID: 685526
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Abstract
The article presents the results of studies of acid-base properties of polymer sorbents based on rhodanine derivatives: polystyrene-azo-o-phenol-azorhodanine (PAFAR), ARA‑8p-p-carboxybenzene azorodane (ARA‑8p-p-KBAR) and AN‑31‑p-carboxybenzene azorodane (AN‑31‑p-KBAR). The sorption capacity of the sorbents for sodium ion and ionization constants of functional-analytical groups of sorbents were determined by potentiometric titration. The calculated values of sorption capacity for sodium ion for PAFAR, AN‑31‑p-KBAR and ARA‑8p-p-KBAR were 3,87 mmol/g, 13,27 mmol/g and 9,67 mmol/g, respectively. The values of the ionization constants of the functional groups of the sorbents were also calculated: for PAFAR – pK1 = 8,21 and pK2 = 9,39; AN‑31‑p-KBAR
– pK1 = 9,21 and pK2 = 10,16; ARA‑8p-p-KBAR – pK1 = 10,26 and pK2 = 10,80.
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About the authors
Saida M. Uvaisova
Dagestan Federal Research Center of the Russian Academy of Sciences (CIBR DFRC RAS)
Author for correspondence.
Email: smuvaisova@mail.ru
ORCID iD: 0000-0002-5100-2669
researcher at the Caspian Institute of Biological Resources
Russian Federation, MakhachkalaMagomed A. Babuev
DSU
Email: babuev77@mail.ru
ORCID iD: 0009-0009-2234-0982
PhD in Chemistry, Associate Professor of the Department of Analytical and Pharmaceutical Chemistry, Dean of the Faculty of Chemistry
Russian Federation, MakhachkalaReferences
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