Study of epoxy/CNT nanocomposites prepared via dispersion in the hardener

Detalhes bibliográficos
Autor(a) principal: Pizzutto,Caio Enrico
Data de Publicação: 2011
Outros Autores: Suave,Jaqueline, Bertholdi,Jonas, Pezzin,Sérgio Henrique, Coelho,Luiz Antonio Ferreira, Amico,Sandro Campos
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Materials research (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392011000200019
Resumo: In this study, carboxylated (SWCNT-c) and pristine (SWCNT) single-walled carbon nanotubes were randomly dispersed in a hardener prior to mixing it with an epoxy resin. The influence of several parameters on the dispersion process were investigated. The produced samples were characterized by infrared spectroscopy, differential scanning calorimetry, dilatometry, dynamic mechanical analysis, scanning electron microscopy and mechanical testing (tensile, flexural and microhardness). The results obtained with the nanocomposites with SWCNT-c suggested that the lowest time and amplitude of sonication improved the mechanical properties. The use of a solvent (acetone) was important to improve dispersion, ultimately increasing microhardness and Young's Modulus up to 32%. Nanocomposites with 0.25 wt. (%) SWCNT-c presented superior mechanical properties compared to those with 0.50 wt. (%) SWCNT. Two simple mathematical models (rule of mixtures and Halpin-Tsai) were used to predict Young's Modulus of the composites yielding results very close to the experimental ones.
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spelling Study of epoxy/CNT nanocomposites prepared via dispersion in the hardenercarbon nanotubesdispersionhardenernanocompositesIn this study, carboxylated (SWCNT-c) and pristine (SWCNT) single-walled carbon nanotubes were randomly dispersed in a hardener prior to mixing it with an epoxy resin. The influence of several parameters on the dispersion process were investigated. The produced samples were characterized by infrared spectroscopy, differential scanning calorimetry, dilatometry, dynamic mechanical analysis, scanning electron microscopy and mechanical testing (tensile, flexural and microhardness). The results obtained with the nanocomposites with SWCNT-c suggested that the lowest time and amplitude of sonication improved the mechanical properties. The use of a solvent (acetone) was important to improve dispersion, ultimately increasing microhardness and Young's Modulus up to 32%. Nanocomposites with 0.25 wt. (%) SWCNT-c presented superior mechanical properties compared to those with 0.50 wt. (%) SWCNT. Two simple mathematical models (rule of mixtures and Halpin-Tsai) were used to predict Young's Modulus of the composites yielding results very close to the experimental ones.ABM, ABC, ABPol2011-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392011000200019Materials Research v.14 n.2 2011reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392011005000041info:eu-repo/semantics/openAccessPizzutto,Caio EnricoSuave,JaquelineBertholdi,JonasPezzin,Sérgio HenriqueCoelho,Luiz Antonio FerreiraAmico,Sandro Camposeng2011-06-27T00:00:00Zoai:scielo:S1516-14392011000200019Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2011-06-27T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Study of epoxy/CNT nanocomposites prepared via dispersion in the hardener
title Study of epoxy/CNT nanocomposites prepared via dispersion in the hardener
spellingShingle Study of epoxy/CNT nanocomposites prepared via dispersion in the hardener
Pizzutto,Caio Enrico
carbon nanotubes
dispersion
hardener
nanocomposites
title_short Study of epoxy/CNT nanocomposites prepared via dispersion in the hardener
title_full Study of epoxy/CNT nanocomposites prepared via dispersion in the hardener
title_fullStr Study of epoxy/CNT nanocomposites prepared via dispersion in the hardener
title_full_unstemmed Study of epoxy/CNT nanocomposites prepared via dispersion in the hardener
title_sort Study of epoxy/CNT nanocomposites prepared via dispersion in the hardener
author Pizzutto,Caio Enrico
author_facet Pizzutto,Caio Enrico
Suave,Jaqueline
Bertholdi,Jonas
Pezzin,Sérgio Henrique
Coelho,Luiz Antonio Ferreira
Amico,Sandro Campos
author_role author
author2 Suave,Jaqueline
Bertholdi,Jonas
Pezzin,Sérgio Henrique
Coelho,Luiz Antonio Ferreira
Amico,Sandro Campos
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Pizzutto,Caio Enrico
Suave,Jaqueline
Bertholdi,Jonas
Pezzin,Sérgio Henrique
Coelho,Luiz Antonio Ferreira
Amico,Sandro Campos
dc.subject.por.fl_str_mv carbon nanotubes
dispersion
hardener
nanocomposites
topic carbon nanotubes
dispersion
hardener
nanocomposites
description In this study, carboxylated (SWCNT-c) and pristine (SWCNT) single-walled carbon nanotubes were randomly dispersed in a hardener prior to mixing it with an epoxy resin. The influence of several parameters on the dispersion process were investigated. The produced samples were characterized by infrared spectroscopy, differential scanning calorimetry, dilatometry, dynamic mechanical analysis, scanning electron microscopy and mechanical testing (tensile, flexural and microhardness). The results obtained with the nanocomposites with SWCNT-c suggested that the lowest time and amplitude of sonication improved the mechanical properties. The use of a solvent (acetone) was important to improve dispersion, ultimately increasing microhardness and Young's Modulus up to 32%. Nanocomposites with 0.25 wt. (%) SWCNT-c presented superior mechanical properties compared to those with 0.50 wt. (%) SWCNT. Two simple mathematical models (rule of mixtures and Halpin-Tsai) were used to predict Young's Modulus of the composites yielding results very close to the experimental ones.
publishDate 2011
dc.date.none.fl_str_mv 2011-01-01
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=S1516-14392011000200019
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392011000200019
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-14392011005000041
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 ABM, ABC, ABPol
publisher.none.fl_str_mv ABM, ABC, ABPol
dc.source.none.fl_str_mv Materials Research v.14 n.2 2011
reponame:Materials research (São Carlos. Online)
instname:Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
instname_str Universidade Federal de São Carlos (UFSCAR)
instacron_str ABM ABC ABPOL
institution ABM ABC ABPOL
reponame_str Materials research (São Carlos. Online)
collection Materials research (São Carlos. Online)
repository.name.fl_str_mv Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)
repository.mail.fl_str_mv dedz@power.ufscar.br
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