A Thermoanalytical Study of Mixtures of Polyvinyl Alcohol with Succinic Acid after Plastic Deformation under High Pressureстатья

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Дата последнего поиска статьи во внешних источниках: 10 апреля 2018 г.

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[1] Zhorin V. A., Kiselev M. R., Kotenev V. A. A thermoanalytical study of mixtures of polyvinyl alcohol with succinic acid after plastic deformation under high pressure // Protection of Metals and Physical Chemistry of Surfaces. — 2017. — Vol. 53, no. 6. — P. 1075–1081. Mixtures of polyvinyl alcohol and amber acid of different composition were subjected to plastic deformation under the pressure of 1.5 GPa at the equipment of the Bridgman-anvil type and the DSC method was used to study heat processes in nondeformed and deformed samples. It is shown that two processes occur simultaneously in PVA under heating: the endothermal process of decomposition of intermolecular bonds and mass decrease related to loss of adsorbed water. After plastic deformation, a decrease in the enthalpy of melting occurred in both components of the PVC–amber-acid mixtures. A low-temperature phase with Tmelt 30–40o C lower than in the initial polymer was formed in the acid and a decrease in the relaxation process enthalpy was observed in the polymer. [ DOI ]

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