ikbguИзвестия Кабардино-Балкарского государственного университетаProceedings of the Kabardino-Balkarian State University2221-7789Kabardino-Balkarian State University named after Kh. M. Berbekov10.31143/2221-7789-2024-1-68-72DPDPAJikbgu-81Research ArticleХимияChemistryИССЛЕДОВАНИЕ ПРОЦЕССА ДЕСТРУКЦИИ В ВОДЕ КОМПОЗИЦИОННЫХ МАТЕРИАЛОВ НА ОСНОВЕ ПОЛИЛАКТИДА И НАТУРАЛЬНОГО КАУЧУКАINVESTIGATION OF POLYLACTIDE/NATURAL RUBBER COMPOSITES DEGRADATION IN WATERПодзороваМ. В.PodzorovaM. V.mariapdz@mail.ruТертышнаяЮ. В.TertyshnayaYu. V.mariapdz@mail.ruРоссийский экономический университет имени Г.В. Плеханова; Институт биохимической физики имени Н.М. Эмануэля РАНG.V. Plekhanov Russian University of Economics; N.M. Emanuel Institute of Biochemical Physics Russian Academy of Sciences2024300320241416872Copyright © Подзорова М.В., Тертышная Ю.В., 20242024Подзорова М.В., Тертышная Ю.В.Podzorova M.V., Tertyshnaya Y.V.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.izvestiakbsu.ru/jour/article/view/81

В работе исследованы композиционные материалы полилактид/натуральный каучук, полученные из раствора. Добавление натурального каучука в матрицу полилактида повышает эластичность композиционного материала. Основными факторами, вызывающими разрыв полимерной цепи в процессе биодеструкции в условиях окружающей среды, являются микроорганизмы, ферменты и вода. Полилактид, несмотря на свою гидрофобность, хорошо подвергается гидролитической деструкции. Установлено, что при воздействии воды изменяется структура и свойства полилактида и композитов на его основе с добавкой натурального каучука. Происходит увеличение температуры плавления на 2 °C и степени кристалличности на 4 % полилактида. Изменения химической структуры образцов зафиксированы методом ИК-спектроскопии.

In this work, polylactide/natural rubber composite materials obtained from a solution were studied. The addition of natural rubber to the polylactide matrix increases the elasticity of the composite material. The main factors causing breakage of the polymer chain during biodegradation under environmental conditions are mi- croorganisms, enzymes, and water. Polylactide, despite its hydrophobicity, is well exposed to hydrolytic degra- dation. It has been established that when exposed to water, the structure, and properties of polylactide and composites based on it with the addition of natural rubber change. There is an increase in the PLA melting point by 2 °C and the PLA degree of crystallinity by 4 %. Changes in the chemical structure of the samples were recorded by IR spectroscopy.

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The authors declare that there are no conflicts of interest present.