Eco-friendly preparation of electrically conductive chitosan - reduced graphene oxide flexible bionanocomposites for food packaging and biological applications

Detalhes bibliográficos
Autor(a) principal: Barra, Ana
Data de Publicação: 2019
Outros Autores: Ferreira, Nuno M., Martins, Manuel A., Lazar, Oana, Pantazi, Aida, Jderu, Alin Alexandru, Neumayer, Sabine M., Rodriguez, Brian J., Enăchescu, Marius, Ferreira, Paula, Nunes, Cláudia
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10773/26928
Resumo: Electrically conductive materials have been highlighted in the biomedical and food packaging areas. Conventional electrically conductive polymers have limited biodegradability and biocompatibility and should be replaced by suitable biomaterials. Herein, electrically conductive bionanocomposites of chitosan and reduced graphene oxide were produced by a green methodology. The reduced graphene oxide was hydrothermally reduced in the presence of caffeic acid and was dispersed into chitosan. The final bionanocomposites achieved an electrical conductivity of 0.7 S/m in-plane and 2.1 × 10−5 S/m through-plane. The reduced graphene oxide promoted a great enhancement of antioxidant activity and a mechanical reinforcement of chitosan matrix, increasing the tensile strength and decreasing the water solubility. The electrical conductivity, mechanical properties and antioxidant activity of the bionanocomposites can be tuned according to the filler content. These active bionanocomposites, prepared using a green methodology, revealed good electrical and mechanical properties, which make them promising materials for food packaging and biological applications.
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spelling Eco-friendly preparation of electrically conductive chitosan - reduced graphene oxide flexible bionanocomposites for food packaging and biological applicationsBionanocompositesChitosanReduced graphene oxideHydrothermal reductionElectrical conductivityElectrically conductive materials have been highlighted in the biomedical and food packaging areas. Conventional electrically conductive polymers have limited biodegradability and biocompatibility and should be replaced by suitable biomaterials. Herein, electrically conductive bionanocomposites of chitosan and reduced graphene oxide were produced by a green methodology. The reduced graphene oxide was hydrothermally reduced in the presence of caffeic acid and was dispersed into chitosan. The final bionanocomposites achieved an electrical conductivity of 0.7 S/m in-plane and 2.1 × 10−5 S/m through-plane. The reduced graphene oxide promoted a great enhancement of antioxidant activity and a mechanical reinforcement of chitosan matrix, increasing the tensile strength and decreasing the water solubility. The electrical conductivity, mechanical properties and antioxidant activity of the bionanocomposites can be tuned according to the filler content. These active bionanocomposites, prepared using a green methodology, revealed good electrical and mechanical properties, which make them promising materials for food packaging and biological applications.Elsevier2020-03-22T00:00:00Z2019-03-22T00:00:00Z2019-03-22info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/26928eng0266-353810.1016/j.compscitech.2019.01.027Barra, AnaFerreira, Nuno M.Martins, Manuel A.Lazar, OanaPantazi, AidaJderu, Alin AlexandruNeumayer, Sabine M.Rodriguez, Brian J.Enăchescu, MariusFerreira, PaulaNunes, Cláudiainfo: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:RCAAP2024-02-22T11:52:11Zoai:ria.ua.pt:10773/26928Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:59:49.869751Repositório 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 Eco-friendly preparation of electrically conductive chitosan - reduced graphene oxide flexible bionanocomposites for food packaging and biological applications
title Eco-friendly preparation of electrically conductive chitosan - reduced graphene oxide flexible bionanocomposites for food packaging and biological applications
spellingShingle Eco-friendly preparation of electrically conductive chitosan - reduced graphene oxide flexible bionanocomposites for food packaging and biological applications
Barra, Ana
Bionanocomposites
Chitosan
Reduced graphene oxide
Hydrothermal reduction
Electrical conductivity
title_short Eco-friendly preparation of electrically conductive chitosan - reduced graphene oxide flexible bionanocomposites for food packaging and biological applications
title_full Eco-friendly preparation of electrically conductive chitosan - reduced graphene oxide flexible bionanocomposites for food packaging and biological applications
title_fullStr Eco-friendly preparation of electrically conductive chitosan - reduced graphene oxide flexible bionanocomposites for food packaging and biological applications
title_full_unstemmed Eco-friendly preparation of electrically conductive chitosan - reduced graphene oxide flexible bionanocomposites for food packaging and biological applications
title_sort Eco-friendly preparation of electrically conductive chitosan - reduced graphene oxide flexible bionanocomposites for food packaging and biological applications
author Barra, Ana
author_facet Barra, Ana
Ferreira, Nuno M.
Martins, Manuel A.
Lazar, Oana
Pantazi, Aida
Jderu, Alin Alexandru
Neumayer, Sabine M.
Rodriguez, Brian J.
Enăchescu, Marius
Ferreira, Paula
Nunes, Cláudia
author_role author
author2 Ferreira, Nuno M.
Martins, Manuel A.
Lazar, Oana
Pantazi, Aida
Jderu, Alin Alexandru
Neumayer, Sabine M.
Rodriguez, Brian J.
Enăchescu, Marius
Ferreira, Paula
Nunes, Cláudia
author2_role author
author
author
author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Barra, Ana
Ferreira, Nuno M.
Martins, Manuel A.
Lazar, Oana
Pantazi, Aida
Jderu, Alin Alexandru
Neumayer, Sabine M.
Rodriguez, Brian J.
Enăchescu, Marius
Ferreira, Paula
Nunes, Cláudia
dc.subject.por.fl_str_mv Bionanocomposites
Chitosan
Reduced graphene oxide
Hydrothermal reduction
Electrical conductivity
topic Bionanocomposites
Chitosan
Reduced graphene oxide
Hydrothermal reduction
Electrical conductivity
description Electrically conductive materials have been highlighted in the biomedical and food packaging areas. Conventional electrically conductive polymers have limited biodegradability and biocompatibility and should be replaced by suitable biomaterials. Herein, electrically conductive bionanocomposites of chitosan and reduced graphene oxide were produced by a green methodology. The reduced graphene oxide was hydrothermally reduced in the presence of caffeic acid and was dispersed into chitosan. The final bionanocomposites achieved an electrical conductivity of 0.7 S/m in-plane and 2.1 × 10−5 S/m through-plane. The reduced graphene oxide promoted a great enhancement of antioxidant activity and a mechanical reinforcement of chitosan matrix, increasing the tensile strength and decreasing the water solubility. The electrical conductivity, mechanical properties and antioxidant activity of the bionanocomposites can be tuned according to the filler content. These active bionanocomposites, prepared using a green methodology, revealed good electrical and mechanical properties, which make them promising materials for food packaging and biological applications.
publishDate 2019
dc.date.none.fl_str_mv 2019-03-22T00:00:00Z
2019-03-22
2020-03-22T00:00:00Z
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 http://hdl.handle.net/10773/26928
url http://hdl.handle.net/10773/26928
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0266-3538
10.1016/j.compscitech.2019.01.027
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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