Abstract
The sorption capacity of polyampholytic hydrogels prepared from partially hydrolyzed Polyacrylamide and ethylenediamine, 1,3-diaminopropane and 1,4-diaminobutane, with respect to divalent metal ions was studied. The amine numbers of the synthesized polyampholytic hydrogels were determined and amounted to 85–93 (mg of HCl) g−1. The parameters of the polymer network and the mixing energies of the polyampholytic hydrogels and water were calculated (0.835–1.07 kJ mol−1), which correlate with the sorption capacity of the hydrogels. The hydrogel based on partially hydrolyzed polyacrylamide and 1,4-diaminobutane is characterized by the highest sorption capacity. The experimental data on equilibrium sorption are reliably described by the Langmuir model. The divalent metal ion forms coordination compounds with the polyampholytic hydrogels.
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No human or animal subjects were used in this research.
The authors declare no competing interests.
Based on the materials of the XVIII International Research and Development Conference “Novel Polymeric Composites. Mikitaev Readings” (July 4–9, 2022; p. Elbrus, Kabardino-Balkarian Republic, Russia).
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, Vol. 72, No. 6, pp. 1299–1306, June, 2023.
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Lipin, V.A., Poshvina, T.A. & Petrova, Y.A. Interaction of polyampholytic hydrogels based on partially hydrolyzed polyacrylamide with divalent metals. Russ Chem Bull 72, 1299–1306 (2023). https://doi.org/10.1007/s11172-023-3905-z
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DOI: https://doi.org/10.1007/s11172-023-3905-z