Laboratory Study of the Ultraviolet Radiation Effect on an HDPE Geomembrane
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | https://hdl.handle.net/10216/134069 |
Resumo: | High-density polyethylene (HDPE) geomembranes are polymeric geosynthetic materials usually applied as a liner in environmental facilities due to their good mechanical properties, good welding conditions, and excellent chemical resistance. A geomembrane's field performance is affected by different conditions and exposures, including ultraviolet radiation, thermal and oxidative exposure, and chemical contact. This article presents an experimental study with a 1.0 mm-thick HDPE virgin geomembrane exposed by the Xenon arc weatherometer for 2160 h and the ultraviolet fluorescent weatherometer for 8760 h to understand the geomembrane's behavior under ultraviolet exposure. The evaluation was performed using the melt flow index (MFI) test, oxidative-induction time (OIT) tests, tensile test, differential scanning calorimetry (DSC) analysis, and Fourier transform infrared spectroscopy (FTIR) analysis. The sample exposed in the Xenon arc equipment showed a tendency to increase the MFI values during the exposure time. This upward trend may indicate morphological changes in the polymer. The tensile behavior analysis showed a tendency of the sample to lose ductility, without showing brittle behavior. The samples' OIT test results under both device exposures showed faster antioxidant depletion for the standard OIT test than the high-pressure OIT test. The DSC and FTIR analyses did not demonstrate the polymer's changes. (c) 2021 by the authors. Licensee MDPI, Basel, Switzerland. |
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Laboratory Study of the Ultraviolet Radiation Effect on an HDPE GeomembraneCiências Tecnológicas, Ciências da engenharia e tecnologiasTechnological sciences, Engineering and technologyHigh-density polyethylene (HDPE) geomembranes are polymeric geosynthetic materials usually applied as a liner in environmental facilities due to their good mechanical properties, good welding conditions, and excellent chemical resistance. A geomembrane's field performance is affected by different conditions and exposures, including ultraviolet radiation, thermal and oxidative exposure, and chemical contact. This article presents an experimental study with a 1.0 mm-thick HDPE virgin geomembrane exposed by the Xenon arc weatherometer for 2160 h and the ultraviolet fluorescent weatherometer for 8760 h to understand the geomembrane's behavior under ultraviolet exposure. The evaluation was performed using the melt flow index (MFI) test, oxidative-induction time (OIT) tests, tensile test, differential scanning calorimetry (DSC) analysis, and Fourier transform infrared spectroscopy (FTIR) analysis. The sample exposed in the Xenon arc equipment showed a tendency to increase the MFI values during the exposure time. This upward trend may indicate morphological changes in the polymer. The tensile behavior analysis showed a tendency of the sample to lose ductility, without showing brittle behavior. The samples' OIT test results under both device exposures showed faster antioxidant depletion for the standard OIT test than the high-pressure OIT test. The DSC and FTIR analyses did not demonstrate the polymer's changes. (c) 2021 by the authors. Licensee MDPI, Basel, Switzerland.2021-05-262021-05-26T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/10216/134069eng2077-037510.3390/membranes11060390Maria de Lurdes LopesFernando Luiz LavoieMarcelo KobelnikClever Aparecido ValentinÉrica Fernanda da Silva TirelliJefferson Lins da Silvainfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-11-29T14:31:34Zoai:repositorio-aberto.up.pt:10216/134069Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T00:03:10.448336Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Laboratory Study of the Ultraviolet Radiation Effect on an HDPE Geomembrane |
title |
Laboratory Study of the Ultraviolet Radiation Effect on an HDPE Geomembrane |
spellingShingle |
Laboratory Study of the Ultraviolet Radiation Effect on an HDPE Geomembrane Maria de Lurdes Lopes Ciências Tecnológicas, Ciências da engenharia e tecnologias Technological sciences, Engineering and technology |
title_short |
Laboratory Study of the Ultraviolet Radiation Effect on an HDPE Geomembrane |
title_full |
Laboratory Study of the Ultraviolet Radiation Effect on an HDPE Geomembrane |
title_fullStr |
Laboratory Study of the Ultraviolet Radiation Effect on an HDPE Geomembrane |
title_full_unstemmed |
Laboratory Study of the Ultraviolet Radiation Effect on an HDPE Geomembrane |
title_sort |
Laboratory Study of the Ultraviolet Radiation Effect on an HDPE Geomembrane |
author |
Maria de Lurdes Lopes |
author_facet |
Maria de Lurdes Lopes Fernando Luiz Lavoie Marcelo Kobelnik Clever Aparecido Valentin Érica Fernanda da Silva Tirelli Jefferson Lins da Silva |
author_role |
author |
author2 |
Fernando Luiz Lavoie Marcelo Kobelnik Clever Aparecido Valentin Érica Fernanda da Silva Tirelli Jefferson Lins da Silva |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Maria de Lurdes Lopes Fernando Luiz Lavoie Marcelo Kobelnik Clever Aparecido Valentin Érica Fernanda da Silva Tirelli Jefferson Lins da Silva |
dc.subject.por.fl_str_mv |
Ciências Tecnológicas, Ciências da engenharia e tecnologias Technological sciences, Engineering and technology |
topic |
Ciências Tecnológicas, Ciências da engenharia e tecnologias Technological sciences, Engineering and technology |
description |
High-density polyethylene (HDPE) geomembranes are polymeric geosynthetic materials usually applied as a liner in environmental facilities due to their good mechanical properties, good welding conditions, and excellent chemical resistance. A geomembrane's field performance is affected by different conditions and exposures, including ultraviolet radiation, thermal and oxidative exposure, and chemical contact. This article presents an experimental study with a 1.0 mm-thick HDPE virgin geomembrane exposed by the Xenon arc weatherometer for 2160 h and the ultraviolet fluorescent weatherometer for 8760 h to understand the geomembrane's behavior under ultraviolet exposure. The evaluation was performed using the melt flow index (MFI) test, oxidative-induction time (OIT) tests, tensile test, differential scanning calorimetry (DSC) analysis, and Fourier transform infrared spectroscopy (FTIR) analysis. The sample exposed in the Xenon arc equipment showed a tendency to increase the MFI values during the exposure time. This upward trend may indicate morphological changes in the polymer. The tensile behavior analysis showed a tendency of the sample to lose ductility, without showing brittle behavior. The samples' OIT test results under both device exposures showed faster antioxidant depletion for the standard OIT test than the high-pressure OIT test. The DSC and FTIR analyses did not demonstrate the polymer's changes. (c) 2021 by the authors. Licensee MDPI, Basel, Switzerland. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-05-26 2021-05-26T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://hdl.handle.net/10216/134069 |
url |
https://hdl.handle.net/10216/134069 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2077-0375 10.3390/membranes11060390 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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