Abstract
Relaxation phenomena in polyvinyl alcohol and polyvinyl formal are studied. The internal friction spectra acquired in a free-damped torsional vibrations mode and temperature range from–150 to 120°C of two test samples each contained two distinct loss peaks, designated as α and γ, and weakly expressed β peaks. The acetylation time affects the position of all relaxation loss peaks. The physicochemical characteristics of relaxation processes are calculated. The mechanical relaxation data are confirmed by IR studies.
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Original Russian Text © V.A. Lomovskoy, N.A. Abaturova, N.Yu. Lomovskaya, O.A. Khlebnikova, T.B. Galushko, 2016, published in Materialovedenie, 2016, No. 7, pp. 3–8.
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Lomovskoy, V.A., Abaturova, N.A., Lomovskaya, N.Y. et al. Relaxation transitions in polyvinyl alcohol and porous polyvinyl formals. Inorg. Mater. Appl. Res. 8, 84–89 (2017). https://doi.org/10.1134/S207511331701021X
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DOI: https://doi.org/10.1134/S207511331701021X