Interaction between an Oxidized Fraction of Polyvinyl Alcohol and Uracil Derivatives in Aqueous Solutions

• Published in: Russian Journal of Physical Chemistry A Vol. 96; no. 8; pp. 1702 - 1706
• Main Authors: Zimin, Yu. S., Kutlugil’dina, G. G., Ramazanova, Z. F., Mustafin, A. G.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-08-2022; Springer Nature B.V
• Subjects: Aqueous solutions; Chemistry; Chemistry and Materials Science; Complex compounds; Complex formation; Physical Chemistry; Physical Chemistry of Solutions; Polyvinyl alcohol; Stability; Temperature dependence; Uracil; complex formation; constants of stability; polyvinyl alcohol; oxidized fraction of polyvinyl alcohol; thermodynamic parameters; uracil derivatives
• ISSN: 0036-0244; 1531-863X
• DOI: 10.1134/S0036024422080313

UV spectroscopy is used to study the complexation of an oxidized fraction of polyvinyl alcohol and uracil derivatives (6-methyluracil, 5-bromo-6-methyluracil, 5-hydroxy-6-methyluracil, 5-nitro-6-methyluracil, 5-fluorouracil, 5-chlorouracil, and 6-aminouracil) in dilute aqueous solutions. The composition of the resulting complex compounds is established and their stability is determined. The temperature dependence of the constants of stability was studied in the range of 291–316 K, and the thermodynamic parameters of complex formation are determined. Results indicate a single mechanism of interaction between the oxidized fraction of polyvinyl alcohol and a number of uracil derivatives.