Improved durability of Bisphenol A polycarbonate by bilayer ceramic nano-coatings alumina-zinc oxide

Detalhes bibliográficos
Autor(a) principal: Moustaghfir,Abdellah
Data de Publicação: 2020
Outros Autores: Rivaton,Agnes, Mailhot,Bénédicte, Jacquet,Michel
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Polímeros (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282020000300404
Resumo: Abstract Polycarbonate exposed to sunlight yellows, degrades and loses its usable properties. In order to increase its lifetime, it can be coated with nano-ceramic thin layers of ZnO and Al2O3 deposited by sputtering. The role of the ZnO is to absorb the UV photons that can damageable for the polycarbonate. However, one of the limitations in the use of ZnO is the photocatalytic oxidation that could occur at interface ZnO/PC as a consequence of the photocatalytic activity of this oxide. Insertion of Al2O3 between PC and ZnO could be a way to inhibit this interfacial oxidation. The photooxidation of the ceramic/polymer assemblies, in condition of artificial accelerated ageing, was measured by infra-red and UV-vis spectroscopies. The results show that the photocatalytic activity of ZnO occurring in monolayer coated substrates can be significantly reduced by insertion of Al2O3 and that, in addition, Al2O3 decreases the permeability to oxygen of the coating.
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spelling Improved durability of Bisphenol A polycarbonate by bilayer ceramic nano-coatings alumina-zinc oxidephotoprotectionphotoageingpolycarbonatethermooxidationthin filmsAbstract Polycarbonate exposed to sunlight yellows, degrades and loses its usable properties. In order to increase its lifetime, it can be coated with nano-ceramic thin layers of ZnO and Al2O3 deposited by sputtering. The role of the ZnO is to absorb the UV photons that can damageable for the polycarbonate. However, one of the limitations in the use of ZnO is the photocatalytic oxidation that could occur at interface ZnO/PC as a consequence of the photocatalytic activity of this oxide. Insertion of Al2O3 between PC and ZnO could be a way to inhibit this interfacial oxidation. The photooxidation of the ceramic/polymer assemblies, in condition of artificial accelerated ageing, was measured by infra-red and UV-vis spectroscopies. The results show that the photocatalytic activity of ZnO occurring in monolayer coated substrates can be significantly reduced by insertion of Al2O3 and that, in addition, Al2O3 decreases the permeability to oxygen of the coating.Associação Brasileira de Polímeros2020-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282020000300404Polímeros v.30 n.3 2020reponame:Polímeros (São Carlos. Online)instname:Associação Brasileira de Polímeros (ABPol)instacron:ABPO10.1590/0104-1428.05320info:eu-repo/semantics/openAccessMoustaghfir,AbdellahRivaton,AgnesMailhot,BénédicteJacquet,Micheleng2020-11-18T00:00:00Zoai:scielo:S0104-14282020000300404Revistahttp://www.scielo.br/pohttps://old.scielo.br/oai/scielo-oai.php||revista@abpol.org.br1678-51690104-1428opendoar:2020-11-18T00:00Polímeros (São Carlos. Online) - Associação Brasileira de Polímeros (ABPol)false
dc.title.none.fl_str_mv Improved durability of Bisphenol A polycarbonate by bilayer ceramic nano-coatings alumina-zinc oxide
title Improved durability of Bisphenol A polycarbonate by bilayer ceramic nano-coatings alumina-zinc oxide
spellingShingle Improved durability of Bisphenol A polycarbonate by bilayer ceramic nano-coatings alumina-zinc oxide
Moustaghfir,Abdellah
photoprotection
photoageing
polycarbonate
thermooxidation
thin films
title_short Improved durability of Bisphenol A polycarbonate by bilayer ceramic nano-coatings alumina-zinc oxide
title_full Improved durability of Bisphenol A polycarbonate by bilayer ceramic nano-coatings alumina-zinc oxide
title_fullStr Improved durability of Bisphenol A polycarbonate by bilayer ceramic nano-coatings alumina-zinc oxide
title_full_unstemmed Improved durability of Bisphenol A polycarbonate by bilayer ceramic nano-coatings alumina-zinc oxide
title_sort Improved durability of Bisphenol A polycarbonate by bilayer ceramic nano-coatings alumina-zinc oxide
author Moustaghfir,Abdellah
author_facet Moustaghfir,Abdellah
Rivaton,Agnes
Mailhot,Bénédicte
Jacquet,Michel
author_role author
author2 Rivaton,Agnes
Mailhot,Bénédicte
Jacquet,Michel
author2_role author
author
author
dc.contributor.author.fl_str_mv Moustaghfir,Abdellah
Rivaton,Agnes
Mailhot,Bénédicte
Jacquet,Michel
dc.subject.por.fl_str_mv photoprotection
photoageing
polycarbonate
thermooxidation
thin films
topic photoprotection
photoageing
polycarbonate
thermooxidation
thin films
description Abstract Polycarbonate exposed to sunlight yellows, degrades and loses its usable properties. In order to increase its lifetime, it can be coated with nano-ceramic thin layers of ZnO and Al2O3 deposited by sputtering. The role of the ZnO is to absorb the UV photons that can damageable for the polycarbonate. However, one of the limitations in the use of ZnO is the photocatalytic oxidation that could occur at interface ZnO/PC as a consequence of the photocatalytic activity of this oxide. Insertion of Al2O3 between PC and ZnO could be a way to inhibit this interfacial oxidation. The photooxidation of the ceramic/polymer assemblies, in condition of artificial accelerated ageing, was measured by infra-red and UV-vis spectroscopies. The results show that the photocatalytic activity of ZnO occurring in monolayer coated substrates can be significantly reduced by insertion of Al2O3 and that, in addition, Al2O3 decreases the permeability to oxygen of the coating.
publishDate 2020
dc.date.none.fl_str_mv 2020-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282020000300404
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282020000300404
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0104-1428.05320
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Associação Brasileira de Polímeros
publisher.none.fl_str_mv Associação Brasileira de Polímeros
dc.source.none.fl_str_mv Polímeros v.30 n.3 2020
reponame:Polímeros (São Carlos. Online)
instname:Associação Brasileira de Polímeros (ABPol)
instacron:ABPO
instname_str Associação Brasileira de Polímeros (ABPol)
instacron_str ABPO
institution ABPO
reponame_str Polímeros (São Carlos. Online)
collection Polímeros (São Carlos. Online)
repository.name.fl_str_mv Polímeros (São Carlos. Online) - Associação Brasileira de Polímeros (ABPol)
repository.mail.fl_str_mv ||revista@abpol.org.br
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