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Accelerated Aging Ultraviolet of a PET Nonwoven Geotextile and Thermoanalytical Evaluation

Nonwoven geotextiles are geosynthetic products that are highly susceptible to ultraviolet degradation because light can reach a large area of the material due to its fiber arrangement. Even with additives, which delay the degradation process, material decomposition still occurs, and therefore the pr...

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Autores principales: Franco, Yara Barbosa, Valentin, Clever Aparecido, Kobelnik, Marcelo, Lins da Silva, Jefferson, Ribeiro, Clovis Augusto, da Luz, Marta Pereira
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9230519/
https://www.ncbi.nlm.nih.gov/pubmed/35744215
http://dx.doi.org/10.3390/ma15124157
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author Franco, Yara Barbosa
Valentin, Clever Aparecido
Kobelnik, Marcelo
Lins da Silva, Jefferson
Ribeiro, Clovis Augusto
da Luz, Marta Pereira
author_facet Franco, Yara Barbosa
Valentin, Clever Aparecido
Kobelnik, Marcelo
Lins da Silva, Jefferson
Ribeiro, Clovis Augusto
da Luz, Marta Pereira
author_sort Franco, Yara Barbosa
collection PubMed
description Nonwoven geotextiles are geosynthetic products that are highly susceptible to ultraviolet degradation because light can reach a large area of the material due to its fiber arrangement. Even with additives, which delay the degradation process, material decomposition still occurs, and therefore the product’s long-term durability can be affected. In this paper, the mechanical and thermal behavior of a commercial nonwoven polyester geotextile subjected to accelerated ultraviolet aging tests were evaluated. The deterioration was evaluated by comparing the physical properties (mass per unit area, thickness, and tensile strength) and thermal behavior (thermogravimetry—TG, thermomechanical analysis—TMA, and differential scanning calorimetry—DSC) before and after exposure times of 500 h and 1000 h. The results showed that the ultraviolet aging tests induced some damage in the polyester fibers, leading to the deterioration of their tensile strength. For 1000 h of exposure, in which the reduction was larger, scanning electron microscopy (SEM) found some superficial disruption of the fibers, indicative of damage. TG and DSC could not capture the effects of UV radiation on polymer degradation, unlike TMA. This latter technique was effective in showing the differences between specimens before and after UV exposure.
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spelling pubmed-92305192022-06-25 Accelerated Aging Ultraviolet of a PET Nonwoven Geotextile and Thermoanalytical Evaluation Franco, Yara Barbosa Valentin, Clever Aparecido Kobelnik, Marcelo Lins da Silva, Jefferson Ribeiro, Clovis Augusto da Luz, Marta Pereira Materials (Basel) Article Nonwoven geotextiles are geosynthetic products that are highly susceptible to ultraviolet degradation because light can reach a large area of the material due to its fiber arrangement. Even with additives, which delay the degradation process, material decomposition still occurs, and therefore the product’s long-term durability can be affected. In this paper, the mechanical and thermal behavior of a commercial nonwoven polyester geotextile subjected to accelerated ultraviolet aging tests were evaluated. The deterioration was evaluated by comparing the physical properties (mass per unit area, thickness, and tensile strength) and thermal behavior (thermogravimetry—TG, thermomechanical analysis—TMA, and differential scanning calorimetry—DSC) before and after exposure times of 500 h and 1000 h. The results showed that the ultraviolet aging tests induced some damage in the polyester fibers, leading to the deterioration of their tensile strength. For 1000 h of exposure, in which the reduction was larger, scanning electron microscopy (SEM) found some superficial disruption of the fibers, indicative of damage. TG and DSC could not capture the effects of UV radiation on polymer degradation, unlike TMA. This latter technique was effective in showing the differences between specimens before and after UV exposure. MDPI 2022-06-11 /pmc/articles/PMC9230519/ /pubmed/35744215 http://dx.doi.org/10.3390/ma15124157 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Franco, Yara Barbosa
Valentin, Clever Aparecido
Kobelnik, Marcelo
Lins da Silva, Jefferson
Ribeiro, Clovis Augusto
da Luz, Marta Pereira
Accelerated Aging Ultraviolet of a PET Nonwoven Geotextile and Thermoanalytical Evaluation
title Accelerated Aging Ultraviolet of a PET Nonwoven Geotextile and Thermoanalytical Evaluation
title_full Accelerated Aging Ultraviolet of a PET Nonwoven Geotextile and Thermoanalytical Evaluation
title_fullStr Accelerated Aging Ultraviolet of a PET Nonwoven Geotextile and Thermoanalytical Evaluation
title_full_unstemmed Accelerated Aging Ultraviolet of a PET Nonwoven Geotextile and Thermoanalytical Evaluation
title_short Accelerated Aging Ultraviolet of a PET Nonwoven Geotextile and Thermoanalytical Evaluation
title_sort accelerated aging ultraviolet of a pet nonwoven geotextile and thermoanalytical evaluation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9230519/
https://www.ncbi.nlm.nih.gov/pubmed/35744215
http://dx.doi.org/10.3390/ma15124157
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