plasticnewsПластические массыPlasticheskie massy0554-2901PLASTMASSY Publishing House (Moscow)10.35164/0554-2901-2025-02-46-49plasticnews-1115Research ArticleПЕРЕРАБОТКАRECYCLINGИсследование смесей на основе полиэтилена и полилактида с добавкой вторичного полимерного сырьяInvestigation of mixtures based on polyethylene and polylactide with the addition of secondary polymer raw materialsПодзороваМ. В.PodzorovaM. V.

Москва

Moscow

mariapdz@mail.ruФГБОУ ВО «Российский экономический университет им. Г. В. Плеханова»РоссияThe Plekhanov Russian University of EconomicsRussian Federation202507052025024649Copyright © Подзорова М.В., 20252025Подзорова М.В.Podzorova M.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.plastics-news.ru/jour/article/view/1115

В процессе эксплуатации полимерные материалы подвергаются воздействию различных агрессивных факторов, таких как свет, тепло, кислород, давление и другие. Окислительные процессы могут оказывать негативное воздействие на свойства смесей. Деструкция при термоокислении является важным фактором, влияющим на материал в процессе формования, химической переработки и утилизации отходов. Анализ влияния вторичного полиэтилена низкой плотности на поведение смеси полиэтилен–полилактид в процессе термоокислительной деструкции показал, что добавка ускоряет начало окисления, как при 80°С, так и при 90°С. Методом ДСК установлено, что после процесса термоокисления пик стеклования полилактида в смеси становится маловыраженным, а также происходит повышение теплофизических характеристик компонентов смеси 30 ПЛА/60 ПЭНП/10 ПЭНПвт.

During operation, polymeric materials are exposed to various aggressive factors, such as light, heat, oxygen, pressure and others. Oxidation processes can have a negative impact on the properties of blends. Degradation by thermal oxidation are important factors affecting the material during molding, chemical processing and disposal consideration. Analysis of the effect of secondary low density polyethylene on the behavior of polyethylene-polylactide blends during thermooxidative degradation showed that the additive accelerates the onset of oxidation both at 80°C and at 90°С. It was found by DSC method that after the thermo-oxidation process the glass transition peak of polylactide in the mixture becomes faint, and also the thermophysical characteristics of 30 PLA/60 LDPE/10 LDPEsec mixture components increase.

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