PHYSICO-CHEMICAL PROPERTIES OF POLYAMPHOLYTES BASED ON POLYACRYLIC ACID AND ALIPHATIC DIAMINES AND THEIR COMPLEXES WITH Cu(II)
Abstract
The complexing ability of polyampholytes synthesized on the basis of polyacrylic acid and aliphatic diamines with respect to heavy metal Cu(II) has been studied. The structure of the formed polyampholyte-metal complexes was resolved by IR spectroscopy. The calculated data showed that as the length of the hydrocarbon chain of the aliphatic diamine increases, the mixing energy of the polyampholyte and the solvent decreases, and the highest thermodynamic affinity is between the solvent and the EDA-based polyampholyte. It has been established that the stability of the complexes does not change in the homologous series. It has been shown by thermogravimetry that the process of decomposition of complexes occurs in three stages and ends at 380–390
°С.
About the Authors
V. A. Lipin
St. Petersburg State University of Industrial Technologies and Design
Russian Federation
Russian Federation
T. A. Poshvina
St. Petersburg State University of Industrial Technologies and Design
Russian Federation
Russian Federation
K. A. Fedorova
St. Petersburg State University of Industrial Technologies and Design
Russian Federation
Russian Federation
A. F. Fadin
St. Petersburg State University of Industrial Technologies and Design
Russian Federation
Russian Federation
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Review
For citations:
Lipin V.A., Poshvina T.A., Fedorova K.A., Fadin A.F. PHYSICO-CHEMICAL PROPERTIES OF POLYAMPHOLYTES BASED ON POLYACRYLIC ACID AND ALIPHATIC DIAMINES AND THEIR COMPLEXES WITH Cu(II). Proceedings of the Kabardino-Balkarian State University. 2022;12(6):38-43. (In Russ.)
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