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https://hdl.handle.net/10216/165866| Author(s): | Fernando Luiz Lavoie Lopes Marcelo Kobelnik Maria de Lurdes Lopes Jefferson Lins da Silva Clever Aparecido Valentin Ennio Marques Palmeira |
| Title: | Study of heat and UV radiation exposures on HDPE geomembranes |
| Issue Date: | 2024 |
| 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. (c) 2024 The Authors |
| Subject: | Ciências Tecnológicas, Ciências da engenharia e tecnologias Technological sciences, Engineering and technology |
| Scientific areas: | Ciências da engenharia e tecnologias Engineering and technology |
| DOI: | 10.1016/j.rinma.2024.100552 |
| URI: | https://hdl.handle.net/10216/165866 |
| Document Type: | Artigo em Revista Científica Internacional |
| Rights: | openAccess |
| Appears in Collections: | FEUP - Artigo em Revista Científica Internacional |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 714861.pdf | 2.31 MB | Adobe PDF |  View/Open |
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