Fernando Luiz Lavoie , Marcelo Kobelnik , Clever Aparecido Valentin , Maria de Lurdes Lopes , Jefferson Lins da Silva , Ennio Marques Palmeira
{"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}
引用次数: 0
Abstract
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.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
