Abstract
A procedure was developed for preparing a heterocycle-containing chelating amino polymer, N-(5-methylimidazol-4-ylmethyl) chitosan, by polymer-analogous transformations of chitosan in reaction with 4-chloromethyl-5-methylimidazole. The procedure allows synthesis of the polymer with the degree of substitution of up to 0.8, with simultaneous formation of the cross-linked structure. The structure of the polymers prepared was proved by IR and 13C NMR spectroscopy. The ability of N-(5-methylimidazol-4-ylmethyl) chitosan with the degree of substitution of 0.54 to sorb Cu2+ and Ni2+ ions was evaluated. According to the sorption isotherms, the sorption capacity of this derivative exceeds that of the unmodifi ed polymer by a factor of 5.
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Original Russian Text © A.V. Pestov, M.A. Ezhikova, M.I. Kodess, Yu.A. Azarova, S.Yu. Bratskaya, 2014, published in Zhurnal Prikladnoi Khimii, 2014, Vol. 87, No. 1, pp. 87–92.
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Pestov, A.V., Ezhikova, M.A., Kodess, M.I. et al. Preparation of a sorbent for metal ions based on N-(5-methylimidazol-4-ylmethyl) chitosan with medium degree of substitution. Russ J Appl Chem 87, 82–87 (2014). https://doi.org/10.1134/S1070427214010121
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DOI: https://doi.org/10.1134/S1070427214010121