{"title":"紫外线照射下聚乳酸-天然橡胶薄膜的降解动力学","authors":"M. V. Podzorova, Yu. V. Tertyshnaya","doi":"10.1134/S1990793124020143","DOIUrl":null,"url":null,"abstract":"<p>The effect of ultraviolet radiation of various wavelengths (254 and 365 nm) on compositions based on polylactide with the addition of natural rubber was studied. It was found that the effect of the UV wavelength of 254 nm on the studied samples was much more active than that of UV 365 nm, which was characterized by a decrease in the melting temperature and the degree of crystallinity of polylactide in the compositions, as well as a deterioration in the physical and mechanical properties. The FTIR-ATR spectroscopy method confirmed the photodegradation process by the change in the intensities of structurally sensitive polylactide and natural rubber bands.</p>","PeriodicalId":768,"journal":{"name":"Russian Journal of Physical Chemistry B","volume":null,"pages":null},"PeriodicalIF":1.4000,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Dynamics of the Degradation of Polylactide-Natural Rubber Films under the Influence of UV-Irradiation\",\"authors\":\"M. V. Podzorova, Yu. V. Tertyshnaya\",\"doi\":\"10.1134/S1990793124020143\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The effect of ultraviolet radiation of various wavelengths (254 and 365 nm) on compositions based on polylactide with the addition of natural rubber was studied. It was found that the effect of the UV wavelength of 254 nm on the studied samples was much more active than that of UV 365 nm, which was characterized by a decrease in the melting temperature and the degree of crystallinity of polylactide in the compositions, as well as a deterioration in the physical and mechanical properties. The FTIR-ATR spectroscopy method confirmed the photodegradation process by the change in the intensities of structurally sensitive polylactide and natural rubber bands.</p>\",\"PeriodicalId\":768,\"journal\":{\"name\":\"Russian Journal of Physical Chemistry B\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.4000,\"publicationDate\":\"2024-05-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Russian Journal of Physical Chemistry B\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S1990793124020143\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"PHYSICS, ATOMIC, MOLECULAR & CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Russian Journal of Physical Chemistry B","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1134/S1990793124020143","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PHYSICS, ATOMIC, MOLECULAR & CHEMICAL","Score":null,"Total":0}
Dynamics of the Degradation of Polylactide-Natural Rubber Films under the Influence of UV-Irradiation
The effect of ultraviolet radiation of various wavelengths (254 and 365 nm) on compositions based on polylactide with the addition of natural rubber was studied. It was found that the effect of the UV wavelength of 254 nm on the studied samples was much more active than that of UV 365 nm, which was characterized by a decrease in the melting temperature and the degree of crystallinity of polylactide in the compositions, as well as a deterioration in the physical and mechanical properties. The FTIR-ATR spectroscopy method confirmed the photodegradation process by the change in the intensities of structurally sensitive polylactide and natural rubber bands.
期刊介绍：
Russian Journal of Physical Chemistry B: Focus on Physics is a journal that publishes studies in the following areas: elementary physical and chemical processes; structure of chemical compounds, reactivity, effect of external field and environment on chemical transformations; molecular dynamics and molecular organization; dynamics and kinetics of photoand radiation-induced processes; mechanism of chemical reactions in gas and condensed phases and at interfaces; chain and thermal processes of ignition, combustion and detonation in gases, two-phase and condensed systems; shock waves; new physical methods of examining chemical reactions; and biological processes in chemical physics.
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