Abstract
The IR spectra of anhydrous thin films of hydrogen peroxide complexes with cyclic and aliphatic poly(N-vinylamides) have been studied. Splitting of a band due to stretching vibrations of C=O groups in the IR spectra of the poly(vinylcaprolactam) complex is accounted for by the resonance interaction of v C=O vibrations of two monomer units linked by a hydrogen peroxide molecule. The formation of a N-H···O=C intramolecular hydrogen bond between neighboring polymer units is responsible for the observed low absorption of hydrogen peroxide by N-vinylamide polymers and copolymers. The energy E H of hydrogen bonds formed between hydrogen peroxide and polymer chain fragments has been estimated by quantum-mechanical calculations. Depending on the complex structure, the value of E H varies from 13 to 29 kJ/mol.
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Original Russian Text © E.F. Panarin, K.K. Kalnin’sh, V.V. Azanova, 2007, published in Vysokomolekulyarnye Soedineniya, Ser. A, 2007, Vol. 49, No. 3, pp. 438–446.
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Panarin, E.F., Kalnin’sh, K.K. & Azanova, V.V. IR spectra and structure of poly(vinylamide) complexes with hydrogen peroxide. Polym. Sci. Ser. A 49, 275–283 (2007). https://doi.org/10.1134/S0965545X07030078
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DOI: https://doi.org/10.1134/S0965545X07030078