Publicação
Eco-friendly preparation of electrically conductive chitosan - reduced graphene oxide flexible bionanocomposites for food packaging and biological applications
| 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. |
|---|---|
| Autores principais: | Barra, Ana |
| 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 |
| Assunto: | Bionanocomposites Chitosan Reduced graphene oxide Hydrothermal reduction Electrical conductivity |
| Ano: | 2019 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade de Aveiro |
| Idioma: | inglês |
| Origem: | RIA - Repositório Institucional da Universidade de Aveiro |
| _version_ | 1877769034591633408 |
|---|---|
| author | Barra, Ana |
| 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 |
| 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 |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Barra, Ana\"},{\"Person.name\":\"Ferreira, Nuno M.\"},{\"Person.name\":\"Martins, Manuel A.\"},{\"Person.name\":\"Lazar, Oana\"},{\"Person.name\":\"Pantazi, Aida\"},{\"Person.name\":\"Jderu, Alin Alexandru\"},{\"Person.name\":\"Neumayer, Sabine M.\"},{\"Person.name\":\"Rodriguez, Brian J.\"},{\"Person.name\":\"Enăchescu, Marius\"},{\"Person.name\":\"Ferreira, Paula\"},{\"Person.name\":\"Nunes, Cláudia\"}] |
| datacite.creators.creator.creatorName.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 |
| datacite.date.Accepted.fl_str_mv | 2019-03-22T00:00:00Z |
| datacite.date.available.fl_str_mv | 2025-06-13T10:44:55Z |
| datacite.date.embargoed.fl_str_mv | 2025-06-13T10:44:55Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| datacite.subjects.subject.fl_str_mv | Bionanocomposites Chitosan Reduced graphene oxide Hydrothermal reduction Electrical conductivity |
| datacite.titles.title.fl_str_mv | Eco-friendly preparation of electrically conductive chitosan - reduced graphene oxide flexible bionanocomposites for food packaging and biological applications |
| dc.creator.none.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.date.Accepted.fl_str_mv | 2019-03-22T00:00:00Z |
| dc.date.available.fl_str_mv | 2025-06-13T10:44:55Z |
| dc.date.embargoed.fl_str_mv | 2025-06-13T10:44:55Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | http://hdl.handle.net/10773/26928 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | Elsevier |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| dc.subject.none.fl_str_mv | Bionanocomposites Chitosan Reduced graphene oxide Hydrothermal reduction Electrical conductivity |
| dc.title.fl_str_mv | Eco-friendly preparation of electrically conductive chitosan - reduced graphene oxide flexible bionanocomposites for food packaging and biological applications |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_6501 |
| 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. |
| dirty | 0 |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ria_a79f922523a7ddbe2df2624a179e548d |
| identifier.url.fl_str_mv | http://hdl.handle.net/10773/26928 |
| inst_facet_str | urn:organizationAcronym:ua{{{_:::_}}}Universidade de Aveiro |
| instacron_str | ua |
| institution | Universidade de Aveiro |
| instname_str | Universidade de Aveiro |
| language | eng |
| network_acronym_str | ria |
| network_name_str | RIA - Repositório Institucional da Universidade de Aveiro |
| oai_identifier_str | oai:ria.ua.pt:10773/26928 |
| organization_str_mv | urn:organizationAcronym:ua |
| person_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 |
| publishDate | 2019 |
| publisher.none.fl_str_mv | Elsevier |
| repo_facet_str | urn:repositoryAcronym:ria{{{_:::_}}}RIA - Repositório Institucional da Universidade de Aveiro |
| reponame_str | RIA - Repositório Institucional da Universidade de Aveiro |
| repository_id_str | urn:repositoryAcronym:ria |
| service_str_mv | urn:repositoryAcronym:ria |
| spelling | pt_PTElectrically 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.application/pdfengElsevierpt_PTEco-friendly preparation of electrically conductive chitosan - reduced graphene oxide flexible bionanocomposites for food packaging and biological applicationsBarra, AnaFerreira, Nuno M.Martins, Manuel A.Lazar, OanaPantazi, AidaJderu, Alin AlexandruNeumayer, Sabine M.Rodriguez, Brian J.Enăchescu, MariusFerreira, PaulaNunes, CláudiaHandlehttp://hdl.handle.net/10773/26928ISSNIsPartOf0266-3538DOIIsPartOf10.1016/j.compscitech.2019.01.0272025-06-13T10:44:55Z2019-03-22T00:00:00Z2019-03-22http://purl.org/coar/access_right/c_abf2open accesspt_PTBionanocompositespt_PTChitosanpt_PTReduced graphene oxidept_PTHydrothermal reductionpt_PTElectrical conductivity1225930 byteshttp://purl.org/coar/access_right/c_abf2application/pdffulltexthttps://ria.ua.pt/bitstream/10773/26928/3/Eco-friendly%20preparation%20of%20electrically%20conductive%20chitosan.pdfliteraturehttp://purl.org/coar/resource_type/c_6501journal article |
| 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 |
| status | SINGLETON |
| subject.fl_str_mv | Bionanocomposites Chitosan Reduced graphene oxide Hydrothermal reduction Electrical conductivity |
| title | 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_short | 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 |
| topic | Bionanocomposites Chitosan Reduced graphene oxide Hydrothermal reduction Electrical conductivity |
| topic_facet | Bionanocomposites Chitosan Reduced graphene oxide Hydrothermal reduction Electrical conductivity |
| url | http://hdl.handle.net/10773/26928 |
| visible | 1 |
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