DEGRADATION OF CONVENTIONAL AND OXODEGRADABLE HIGH DENSITY POLYETHYLENE IN TROPICAL AQUEOUS AND OUTDOOR ENVIRONMENTS

Polyethylene is widely used in packaging due to its chemical stability, lightness, impermeability and low cost. However, these properties become questionable when it is discarded. Oxodegradable plastics, which degrade by an abiotic-biotic process, have been promoted as a solution to the pollution ca...

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Detalles Bibliográficos
Autores: Carmen A. Arias-Villamizar, Alethia Vázquez-Morillas
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2018
País:México
Institución:Universidad Autónoma Metropolitana
Repositorio:Redalyc-UAM
OAI Identifier:oai:redalyc.org:37055963012
Acceso en línea:https://www.redalyc.org/articulo.oa?id=37055963012
https://www.redalyc.org/journal/370/37055963012/
https://www.redalyc.org/journal/370/37055963012/html/
https://www.redalyc.org/journal/370/37055963012/37055963012.epub
https://www.redalyc.org/journal/370/37055963012/movil
https://doi.org/10.20937/RICA.2018.34.01.12
Access Level:acceso abierto
Palabra clave:Ciencias de la Tierra
micro
plastics
photo oxidation
Plastic pollution
aquatic environments
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spelling DEGRADATION OF CONVENTIONAL AND OXODEGRADABLE HIGH DENSITY POLYETHYLENE IN TROPICAL AQUEOUS AND OUTDOOR ENVIRONMENTSCarmen A. Arias-VillamizarAlethia Vázquez-MorillasCiencias de la Tierramicroplasticsphoto oxidationPlastic pollutionaquatic environmentsPolyethylene is widely used in packaging due to its chemical stability, lightness, impermeability and low cost. However, these properties become questionable when it is discarded. Oxodegradable plastics, which degrade by an abiotic-biotic process, have been promoted as a solution to the pollution caused by plastics. This research assesses the degradability of conventional and oxodegradable high density polyethylene in marine, freshwater, and outdoor tropical environments. Samples of these plastics, with and without previous abiotic degradation, were exposed to direct weathering in the Caribbean Sea and the Magdalena River, in Colombia. Their degradation was evaluated during six months by the formation of carbonyl groups, a decrease in elongation at break and visual evidence of deterioration. We found faster degradation for outdoor, followed by marine and freshwater conditions, evidencing that UV and temperature are the most relevant promoters of degradation, especially for oxodegradable plastics, as evidenced by the increase in carbonyl index. In aqueous environments, all specimens showed the formation of biofilm and in some cases cracks and fragmentation, especially in oxidized oxodegradable high density polyethylene specimens in the marine environment. Even if oxodegradables plastics, and in a lesser degree conventional ones, began their degradation process, they did not achieve complete disintegration or mineralization, due to lack of environmental conditions that can only be guaranteed in carefully monitored waste management systems.Universidad Nacional Autónoma de México2018info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdf0188-4999https://www.redalyc.org/articulo.oa?id=37055963012https://www.redalyc.org/journal/370/37055963012/https://www.redalyc.org/journal/370/37055963012/html/https://www.redalyc.org/journal/370/37055963012/37055963012.epubhttps://www.redalyc.org/journal/370/37055963012/movilhttps://doi.org/10.20937/RICA.2018.34.01.12Revista Internacional de Contaminación Ambiental (México) Num.1 Vol.34reponame:Redalyc-UAMinstname:Universidad Autónoma Metropolitanainstacron:UAMenhttp://www.redalyc.org/revista.oa?id=370Revista Internacional de Contaminación Ambientalinfo:eu-repo/semantics/openAccessoai:redalyc.org:370559630122025-03-05T19:08:35Z
dc.title.none.fl_str_mv DEGRADATION OF CONVENTIONAL AND OXODEGRADABLE HIGH DENSITY POLYETHYLENE IN TROPICAL AQUEOUS AND OUTDOOR ENVIRONMENTS
title DEGRADATION OF CONVENTIONAL AND OXODEGRADABLE HIGH DENSITY POLYETHYLENE IN TROPICAL AQUEOUS AND OUTDOOR ENVIRONMENTS
spellingShingle DEGRADATION OF CONVENTIONAL AND OXODEGRADABLE HIGH DENSITY POLYETHYLENE IN TROPICAL AQUEOUS AND OUTDOOR ENVIRONMENTS
Carmen A. Arias-Villamizar
Ciencias de la Tierra
micro
plastics
photo oxidation
Plastic pollution
aquatic environments
title_short DEGRADATION OF CONVENTIONAL AND OXODEGRADABLE HIGH DENSITY POLYETHYLENE IN TROPICAL AQUEOUS AND OUTDOOR ENVIRONMENTS
title_full DEGRADATION OF CONVENTIONAL AND OXODEGRADABLE HIGH DENSITY POLYETHYLENE IN TROPICAL AQUEOUS AND OUTDOOR ENVIRONMENTS
title_fullStr DEGRADATION OF CONVENTIONAL AND OXODEGRADABLE HIGH DENSITY POLYETHYLENE IN TROPICAL AQUEOUS AND OUTDOOR ENVIRONMENTS
title_full_unstemmed DEGRADATION OF CONVENTIONAL AND OXODEGRADABLE HIGH DENSITY POLYETHYLENE IN TROPICAL AQUEOUS AND OUTDOOR ENVIRONMENTS
title_sort DEGRADATION OF CONVENTIONAL AND OXODEGRADABLE HIGH DENSITY POLYETHYLENE IN TROPICAL AQUEOUS AND OUTDOOR ENVIRONMENTS
dc.creator.none.fl_str_mv Carmen A. Arias-Villamizar
Alethia Vázquez-Morillas
author Carmen A. Arias-Villamizar
author_facet Carmen A. Arias-Villamizar
Alethia Vázquez-Morillas
author_role author
author2 Alethia Vázquez-Morillas
author2_role author
dc.subject.none.fl_str_mv Ciencias de la Tierra
micro
plastics
photo oxidation
Plastic pollution
aquatic environments
topic Ciencias de la Tierra
micro
plastics
photo oxidation
Plastic pollution
aquatic environments
description Polyethylene is widely used in packaging due to its chemical stability, lightness, impermeability and low cost. However, these properties become questionable when it is discarded. Oxodegradable plastics, which degrade by an abiotic-biotic process, have been promoted as a solution to the pollution caused by plastics. This research assesses the degradability of conventional and oxodegradable high density polyethylene in marine, freshwater, and outdoor tropical environments. Samples of these plastics, with and without previous abiotic degradation, were exposed to direct weathering in the Caribbean Sea and the Magdalena River, in Colombia. Their degradation was evaluated during six months by the formation of carbonyl groups, a decrease in elongation at break and visual evidence of deterioration. We found faster degradation for outdoor, followed by marine and freshwater conditions, evidencing that UV and temperature are the most relevant promoters of degradation, especially for oxodegradable plastics, as evidenced by the increase in carbonyl index. In aqueous environments, all specimens showed the formation of biofilm and in some cases cracks and fragmentation, especially in oxidized oxodegradable high density polyethylene specimens in the marine environment. Even if oxodegradables plastics, and in a lesser degree conventional ones, began their degradation process, they did not achieve complete disintegration or mineralization, due to lack of environmental conditions that can only be guaranteed in carefully monitored waste management systems.
publishDate 2018
dc.date.none.fl_str_mv 2018
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv 0188-4999
https://www.redalyc.org/articulo.oa?id=37055963012
https://www.redalyc.org/journal/370/37055963012/
https://www.redalyc.org/journal/370/37055963012/html/
https://www.redalyc.org/journal/370/37055963012/37055963012.epub
https://www.redalyc.org/journal/370/37055963012/movil
https://doi.org/10.20937/RICA.2018.34.01.12
identifier_str_mv 0188-4999
url https://www.redalyc.org/articulo.oa?id=37055963012
https://www.redalyc.org/journal/370/37055963012/
https://www.redalyc.org/journal/370/37055963012/html/
https://www.redalyc.org/journal/370/37055963012/37055963012.epub
https://www.redalyc.org/journal/370/37055963012/movil
https://doi.org/10.20937/RICA.2018.34.01.12
dc.language.none.fl_str_mv en
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dc.relation.none.fl_str_mv http://www.redalyc.org/revista.oa?id=370
dc.rights.none.fl_str_mv Revista Internacional de Contaminación Ambiental
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Revista Internacional de Contaminación Ambiental
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidad Nacional Autónoma de México
publisher.none.fl_str_mv Universidad Nacional Autónoma de México
dc.source.none.fl_str_mv Revista Internacional de Contaminación Ambiental (México) Num.1 Vol.34
reponame:Redalyc-UAM
instname:Universidad Autónoma Metropolitana
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