Bacterial cellulose/graphene oxide aerogels with enhanced dimensional and thermal stability
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10773/27120 |
Resumo: | We present a novel method for processing bacterial cellulose/graphene oxide (BC/GO) aerogels with multifunctional properties. The addition of a small amount of dimethyl sulfoxide (DMSO) to the aqueous dispersion of the nanomaterials during the gelification process affected the water freezing temperature of the system and thereby affecting the porous structure of the aerogel obtained after liophilization. The possibility to obtain small and elongated pore with axial orientation allowed a significant improvement of the structural stability of the aerogels. Moreover, the aerogels reduction by thermal treatment with ammonia gas induced crosslinking between the different nanophases, thus given an incremental factor for the mechanical performance of the aerogels under harsh conditions. The resulting aerogels also showed significant improvements in terms of thermal stability and electrical conductivity. These multifunctional BC/GO aerogels present high potential as sustainable and ecological alternative materials for lightweight packaging, filters for atmosphere and water treatment, or energy applications. |
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7160 |
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Bacterial cellulose/graphene oxide aerogels with enhanced dimensional and thermal stabilityBacterial celluloseGraphene oxideReduction treatmentsDimensional stabilityThermal stabilityWe present a novel method for processing bacterial cellulose/graphene oxide (BC/GO) aerogels with multifunctional properties. The addition of a small amount of dimethyl sulfoxide (DMSO) to the aqueous dispersion of the nanomaterials during the gelification process affected the water freezing temperature of the system and thereby affecting the porous structure of the aerogel obtained after liophilization. The possibility to obtain small and elongated pore with axial orientation allowed a significant improvement of the structural stability of the aerogels. Moreover, the aerogels reduction by thermal treatment with ammonia gas induced crosslinking between the different nanophases, thus given an incremental factor for the mechanical performance of the aerogels under harsh conditions. The resulting aerogels also showed significant improvements in terms of thermal stability and electrical conductivity. These multifunctional BC/GO aerogels present high potential as sustainable and ecological alternative materials for lightweight packaging, filters for atmosphere and water treatment, or energy applications.Elsevier2020-11-30T00:00:00Z2019-11-11T00:00:00Z2019-11-11info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/27120eng0144-861710.1016/j.carbpol.2019.115598Pinto, Susana C.Gonçalves, GilSandoval, StefaniaLópez-Periago, Ana M.Borras, AlejandroDomingo, ConcepciónTobias, GerardDuarte, IsabelVicente, RomeuMarques, Paula A.A.P.info: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:RCAAP2024-02-22T11:52:30Zoai:ria.ua.pt:10773/27120Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:59:57.858263Repositório 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 |
Bacterial cellulose/graphene oxide aerogels with enhanced dimensional and thermal stability |
title |
Bacterial cellulose/graphene oxide aerogels with enhanced dimensional and thermal stability |
spellingShingle |
Bacterial cellulose/graphene oxide aerogels with enhanced dimensional and thermal stability Pinto, Susana C. Bacterial cellulose Graphene oxide Reduction treatments Dimensional stability Thermal stability |
title_short |
Bacterial cellulose/graphene oxide aerogels with enhanced dimensional and thermal stability |
title_full |
Bacterial cellulose/graphene oxide aerogels with enhanced dimensional and thermal stability |
title_fullStr |
Bacterial cellulose/graphene oxide aerogels with enhanced dimensional and thermal stability |
title_full_unstemmed |
Bacterial cellulose/graphene oxide aerogels with enhanced dimensional and thermal stability |
title_sort |
Bacterial cellulose/graphene oxide aerogels with enhanced dimensional and thermal stability |
author |
Pinto, Susana C. |
author_facet |
Pinto, Susana C. Gonçalves, Gil Sandoval, Stefania López-Periago, Ana M. Borras, Alejandro Domingo, Concepción Tobias, Gerard Duarte, Isabel Vicente, Romeu Marques, Paula A.A.P. |
author_role |
author |
author2 |
Gonçalves, Gil Sandoval, Stefania López-Periago, Ana M. Borras, Alejandro Domingo, Concepción Tobias, Gerard Duarte, Isabel Vicente, Romeu Marques, Paula A.A.P. |
author2_role |
author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Pinto, Susana C. Gonçalves, Gil Sandoval, Stefania López-Periago, Ana M. Borras, Alejandro Domingo, Concepción Tobias, Gerard Duarte, Isabel Vicente, Romeu Marques, Paula A.A.P. |
dc.subject.por.fl_str_mv |
Bacterial cellulose Graphene oxide Reduction treatments Dimensional stability Thermal stability |
topic |
Bacterial cellulose Graphene oxide Reduction treatments Dimensional stability Thermal stability |
description |
We present a novel method for processing bacterial cellulose/graphene oxide (BC/GO) aerogels with multifunctional properties. The addition of a small amount of dimethyl sulfoxide (DMSO) to the aqueous dispersion of the nanomaterials during the gelification process affected the water freezing temperature of the system and thereby affecting the porous structure of the aerogel obtained after liophilization. The possibility to obtain small and elongated pore with axial orientation allowed a significant improvement of the structural stability of the aerogels. Moreover, the aerogels reduction by thermal treatment with ammonia gas induced crosslinking between the different nanophases, thus given an incremental factor for the mechanical performance of the aerogels under harsh conditions. The resulting aerogels also showed significant improvements in terms of thermal stability and electrical conductivity. These multifunctional BC/GO aerogels present high potential as sustainable and ecological alternative materials for lightweight packaging, filters for atmosphere and water treatment, or energy applications. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-11-11T00:00:00Z 2019-11-11 2020-11-30T00:00:00Z |
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/10773/27120 |
url |
http://hdl.handle.net/10773/27120 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
0144-8617 10.1016/j.carbpol.2019.115598 |
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 instacron:RCAAP |
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 |
repository.mail.fl_str_mv |
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1799137654289203200 |