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Melting and Crystallization of Polypropylene in Mixtures with Some Low-Molecular-Weight Compounds after Plastic Deformation under High Pressureстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 12 января 2022 г.
- Авторы: Zhorin V.A., Kiselev M.R., Kotenev V.A.
- Журнал: Protection of Metals and Physical Chemistry of Surfaces
- Том: 57
- Номер: 4
- Год издания: 2021
- Издательство: Pleiades Publishing, Ltd
- Местоположение издательства: Road Town, United Kingdom
- Первая страница: 764
- Последняя страница: 770
- DOI: 10.1134/s2070205121040262
- Аннотация: Polypropylene (PP) mixtures (10 wt %) with AgJ, V203, AgNO3, phenolic red, and phenolphthalein underwent plastic deformation at a pressure of 1 GPa on an anvil-type high-pressure device. It has been established by the DSC method that the enthalpy of PP melting in mixtures with inorganic components increased to 310 and 1840 J/g, while the enthalpy of melting was 62 J g–1 in the initial PP. In the deformed mixture with AgNO3, melting was described by a superposition of six endothermic peaks. The enthalpy of PP crystallization from the melt in mixtures with ionic crystals (AgJ, AgNO3) attained 360 and 264 J/g, respectively. Thermograms of mixtures with phenolic red and phenolphthalein showed superpositions of endothermic melting peaks of small polymer crystallites and exothermic peaks of cold crystallization. The enthalpies of endothermic processes in the deformed mixtures with phenolic red and phenolphthalein were identical. In these mixtures, the enthalpies of PP crystallization from the melt were identical to those of cold crystallization.
- Добавил в систему: Котенев Владимир Анатольевич