Cellulose acetate/carbon nanotube composites by melt mixing

Detalhes bibliográficos
Autor(a) principal: Lima, Ana Luísa Delgado
Data de Publicação: 2017
Outros Autores: Paiva, M. C., Machado, A. V.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/51416
Resumo: Cellulose acetate (CA) is produced from a natural polymer and presents excellent properties, finding applications in a variety of areas. Unlike cellulose, CA is melt processable and may be molded into parts and formed into fibers or films. In this context, the production of conductive CA composites that may be processable and integrated into parts to provide specific functionalities is an area of increasing interest. The present work aims to prepare electrically conductive composites based on CA and carbon nanotubes (CNTs) by melt mixing. The nanocomposites were produced with pure and pyrrolidine-functionalized nanotubes, using a batch mixer and a twin-screw extruder. The morphology of carbon nanotube dispersion, the rheological behavior and the electrical conductivity of the final composites were evaluated. Rheological percolation was achieved for the composites with 0.5 wt% of CNT—both pure and functionalized—produced by extrusion; while electrical percolation was observed only for the composites with pure CNT.
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spelling Cellulose acetate/carbon nanotube composites by melt mixingCellulose acetateCarbon nanotubesRheologyMorphologyDispersionElectrical conductivityEngenharia e Tecnologia::Engenharia dos MateriaisScience & TechnologyCellulose acetate (CA) is produced from a natural polymer and presents excellent properties, finding applications in a variety of areas. Unlike cellulose, CA is melt processable and may be molded into parts and formed into fibers or films. In this context, the production of conductive CA composites that may be processable and integrated into parts to provide specific functionalities is an area of increasing interest. The present work aims to prepare electrically conductive composites based on CA and carbon nanotubes (CNTs) by melt mixing. The nanocomposites were produced with pure and pyrrolidine-functionalized nanotubes, using a batch mixer and a twin-screw extruder. The morphology of carbon nanotube dispersion, the rheological behavior and the electrical conductivity of the final composites were evaluated. Rheological percolation was achieved for the composites with 0.5 wt% of CNT—both pure and functionalized—produced by extrusion; while electrical percolation was observed only for the composites with pure CNT.The authors acknowledge the Portuguese Foundation of Science and Technology (SFRH/BD/81711/2011 and PEst-C/CTM/LA0025/2011) and n-SteP – Nanostructured Systems for Tailored Properties, with reference NORTE-07-0124-FEDER-000039, supported by the Programa Operacional Regional do Norte (ON.2).info:eu-repo/semantics/publishedVersionScrivener PublishingUniversidade do MinhoLima, Ana Luísa DelgadoPaiva, M. C.Machado, A. V.20172017-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/51416eng2164-63252164-634110.7569/JRM.2017.634104info: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:RCAAP2023-07-21T12:22:46Zoai:repositorium.sdum.uminho.pt:1822/51416Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:16:19.574653Repositório 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 Cellulose acetate/carbon nanotube composites by melt mixing
title Cellulose acetate/carbon nanotube composites by melt mixing
spellingShingle Cellulose acetate/carbon nanotube composites by melt mixing
Lima, Ana Luísa Delgado
Cellulose acetate
Carbon nanotubes
Rheology
Morphology
Dispersion
Electrical conductivity
Engenharia e Tecnologia::Engenharia dos Materiais
Science & Technology
title_short Cellulose acetate/carbon nanotube composites by melt mixing
title_full Cellulose acetate/carbon nanotube composites by melt mixing
title_fullStr Cellulose acetate/carbon nanotube composites by melt mixing
title_full_unstemmed Cellulose acetate/carbon nanotube composites by melt mixing
title_sort Cellulose acetate/carbon nanotube composites by melt mixing
author Lima, Ana Luísa Delgado
author_facet Lima, Ana Luísa Delgado
Paiva, M. C.
Machado, A. V.
author_role author
author2 Paiva, M. C.
Machado, A. V.
author2_role author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Lima, Ana Luísa Delgado
Paiva, M. C.
Machado, A. V.
dc.subject.por.fl_str_mv Cellulose acetate
Carbon nanotubes
Rheology
Morphology
Dispersion
Electrical conductivity
Engenharia e Tecnologia::Engenharia dos Materiais
Science & Technology
topic Cellulose acetate
Carbon nanotubes
Rheology
Morphology
Dispersion
Electrical conductivity
Engenharia e Tecnologia::Engenharia dos Materiais
Science & Technology
description Cellulose acetate (CA) is produced from a natural polymer and presents excellent properties, finding applications in a variety of areas. Unlike cellulose, CA is melt processable and may be molded into parts and formed into fibers or films. In this context, the production of conductive CA composites that may be processable and integrated into parts to provide specific functionalities is an area of increasing interest. The present work aims to prepare electrically conductive composites based on CA and carbon nanotubes (CNTs) by melt mixing. The nanocomposites were produced with pure and pyrrolidine-functionalized nanotubes, using a batch mixer and a twin-screw extruder. The morphology of carbon nanotube dispersion, the rheological behavior and the electrical conductivity of the final composites were evaluated. Rheological percolation was achieved for the composites with 0.5 wt% of CNT—both pure and functionalized—produced by extrusion; while electrical percolation was observed only for the composites with pure CNT.
publishDate 2017
dc.date.none.fl_str_mv 2017
2017-01-01T00:00:00Z
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/1822/51416
url http://hdl.handle.net/1822/51416
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 2164-6325
2164-6341
10.7569/JRM.2017.634104
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 Scrivener Publishing
publisher.none.fl_str_mv Scrivener Publishing
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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