Fernando Luiz Lavoie , Marcelo Kobelnik , Clever Aparecido Valentin , Maria de Lurdes Lopes , Jefferson Lins da Silva , Ennio Marques Palmeira
{"title":"高密度聚乙烯（HDPE）土工膜受热和紫外线辐射的研究","authors":"Fernando Luiz Lavoie , Marcelo Kobelnik , Clever Aparecido Valentin , Maria de Lurdes Lopes , Jefferson Lins da Silva , Ennio Marques Palmeira","doi":"10.1016/j.rinma.2024.100552","DOIUrl":null,"url":null,"abstract":"<div><p>This study analyzed the behavior of three HDPE smooth geomembrane samples of 1.0, 1.5, and 2.0 mm thicknesses under heat exposure for 8760 h and the combined effect of UV radiation for 8760 h followed by heat aging for 4380 h. The results show high antioxidant consumption, an increase in viscosity, and stress cracking susceptibility, demonstrating the occurrence of cross-linking and accelerating oxidative degradation. Samples under the combined effect of UV radiation followed by heat exposure showed advanced oxidative degradation in comparison to those under heat exposure. DMA results corroborate the morphological changes in the polymer, exhibiting different thermal behavior for some types of exposure and different samples’ thicknesses.</p></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"22 ","pages":"Article 100552"},"PeriodicalIF":0.0000,"publicationDate":"2024-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590048X24000268/pdfft?md5=89544bc384b27d9c3559f40cf79a8845&pid=1-s2.0-S2590048X24000268-main.pdf","citationCount":"0","resultStr":"{\"title\":\"Study of heat and UV radiation exposures on HDPE geomembranes\",\"authors\":\"Fernando Luiz Lavoie , Marcelo Kobelnik , Clever Aparecido Valentin , Maria de Lurdes Lopes , Jefferson Lins da Silva , Ennio Marques Palmeira\",\"doi\":\"10.1016/j.rinma.2024.100552\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>This study analyzed the behavior of three HDPE smooth geomembrane samples of 1.0, 1.5, and 2.0 mm thicknesses under heat exposure for 8760 h and the combined effect of UV radiation for 8760 h followed by heat aging for 4380 h. The results show high antioxidant consumption, an increase in viscosity, and stress cracking susceptibility, demonstrating the occurrence of cross-linking and accelerating oxidative degradation. Samples under the combined effect of UV radiation followed by heat exposure showed advanced oxidative degradation in comparison to those under heat exposure. DMA results corroborate the morphological changes in the polymer, exhibiting different thermal behavior for some types of exposure and different samples’ thicknesses.</p></div>\",\"PeriodicalId\":101087,\"journal\":{\"name\":\"Results in Materials\",\"volume\":\"22 \",\"pages\":\"Article 100552\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-03-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.sciencedirect.com/science/article/pii/S2590048X24000268/pdfft?md5=89544bc384b27d9c3559f40cf79a8845&pid=1-s2.0-S2590048X24000268-main.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Results in Materials\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2590048X24000268\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Results in Materials","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2590048X24000268","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Study of heat and UV radiation exposures on HDPE geomembranes
This study analyzed the behavior of three HDPE smooth geomembrane samples of 1.0, 1.5, and 2.0 mm thicknesses under heat exposure for 8760 h and the combined effect of UV radiation for 8760 h followed by heat aging for 4380 h. The results show high antioxidant consumption, an increase in viscosity, and stress cracking susceptibility, demonstrating the occurrence of cross-linking and accelerating oxidative degradation. Samples under the combined effect of UV radiation followed by heat exposure showed advanced oxidative degradation in comparison to those under heat exposure. DMA results corroborate the morphological changes in the polymer, exhibiting different thermal behavior for some types of exposure and different samples’ thicknesses.
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