Influence of the polyhedral oligomeric silsesquioxane n-phenylaminopropyl: POSS in the thermal stability and the glass transition temperature of epoxy resin

Detalhes bibliográficos
Autor(a) principal: Pistor,Vinícius
Data de Publicação: 2013
Outros Autores: Soares,Bluma Guenther, Mauler,Raquel Santos
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Polímeros (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282013000300008
Resumo: In this study, epoxy nanocomposites containing different fractions of n-phenylaminopropyl (POSS) were prepared. The nanocomposites were studied by transmission electron microscopy (TEM), gel content, dynamic-mechanical analysis (DMA) and thermogravimetric analysis (TGA). The parameters for Avrami's equation were calculated from the degradation curves. The dispersions used to form the nanocomposites were effective above 5 wt % of POSS, and the gel content increased with the addition of POSS. The DMA analysis exhibited an increase in the storage modulus (E') and a shifting of Tg to higher temperatures upon POSS incorporation. The weight loss indicated that the POSS promoted an increase in thermal stability of the epoxy resin. The Avrami parameters demonstrated that the addition of POSS decreased the Avrami constant (k'), increased the half-life (t1/2) of degradation and promoted changes in the Avrami exponent (n). These results suggest that the increase in the glass transition temperature and thermal stability depend on the reactive groups in the POSS nanoparticles.
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spelling Influence of the polyhedral oligomeric silsesquioxane n-phenylaminopropyl: POSS in the thermal stability and the glass transition temperature of epoxy resinEpoxyPOSSnanocompositesthermal stabilityglass transitionIn this study, epoxy nanocomposites containing different fractions of n-phenylaminopropyl (POSS) were prepared. The nanocomposites were studied by transmission electron microscopy (TEM), gel content, dynamic-mechanical analysis (DMA) and thermogravimetric analysis (TGA). The parameters for Avrami's equation were calculated from the degradation curves. The dispersions used to form the nanocomposites were effective above 5 wt % of POSS, and the gel content increased with the addition of POSS. The DMA analysis exhibited an increase in the storage modulus (E') and a shifting of Tg to higher temperatures upon POSS incorporation. The weight loss indicated that the POSS promoted an increase in thermal stability of the epoxy resin. The Avrami parameters demonstrated that the addition of POSS decreased the Avrami constant (k'), increased the half-life (t1/2) of degradation and promoted changes in the Avrami exponent (n). These results suggest that the increase in the glass transition temperature and thermal stability depend on the reactive groups in the POSS nanoparticles.Associação Brasileira de Polímeros2013-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282013000300008Polímeros v.23 n.3 2013reponame:Polímeros (São Carlos. Online)instname:Associação Brasileira de Polímeros (ABPol)instacron:ABPO10.4322/polimeros.2013.039info:eu-repo/semantics/openAccessPistor,ViníciusSoares,Bluma GuentherMauler,Raquel Santoseng2015-07-21T00:00:00Zoai:scielo:S0104-14282013000300008Revistahttp://www.scielo.br/pohttps://old.scielo.br/oai/scielo-oai.php||revista@abpol.org.br1678-51690104-1428opendoar:2015-07-21T00:00Polímeros (São Carlos. Online) - Associação Brasileira de Polímeros (ABPol)false
dc.title.none.fl_str_mv Influence of the polyhedral oligomeric silsesquioxane n-phenylaminopropyl: POSS in the thermal stability and the glass transition temperature of epoxy resin
title Influence of the polyhedral oligomeric silsesquioxane n-phenylaminopropyl: POSS in the thermal stability and the glass transition temperature of epoxy resin
spellingShingle Influence of the polyhedral oligomeric silsesquioxane n-phenylaminopropyl: POSS in the thermal stability and the glass transition temperature of epoxy resin
Pistor,Vinícius
Epoxy
POSS
nanocomposites
thermal stability
glass transition
title_short Influence of the polyhedral oligomeric silsesquioxane n-phenylaminopropyl: POSS in the thermal stability and the glass transition temperature of epoxy resin
title_full Influence of the polyhedral oligomeric silsesquioxane n-phenylaminopropyl: POSS in the thermal stability and the glass transition temperature of epoxy resin
title_fullStr Influence of the polyhedral oligomeric silsesquioxane n-phenylaminopropyl: POSS in the thermal stability and the glass transition temperature of epoxy resin
title_full_unstemmed Influence of the polyhedral oligomeric silsesquioxane n-phenylaminopropyl: POSS in the thermal stability and the glass transition temperature of epoxy resin
title_sort Influence of the polyhedral oligomeric silsesquioxane n-phenylaminopropyl: POSS in the thermal stability and the glass transition temperature of epoxy resin
author Pistor,Vinícius
author_facet Pistor,Vinícius
Soares,Bluma Guenther
Mauler,Raquel Santos
author_role author
author2 Soares,Bluma Guenther
Mauler,Raquel Santos
author2_role author
author
dc.contributor.author.fl_str_mv Pistor,Vinícius
Soares,Bluma Guenther
Mauler,Raquel Santos
dc.subject.por.fl_str_mv Epoxy
POSS
nanocomposites
thermal stability
glass transition
topic Epoxy
POSS
nanocomposites
thermal stability
glass transition
description In this study, epoxy nanocomposites containing different fractions of n-phenylaminopropyl (POSS) were prepared. The nanocomposites were studied by transmission electron microscopy (TEM), gel content, dynamic-mechanical analysis (DMA) and thermogravimetric analysis (TGA). The parameters for Avrami's equation were calculated from the degradation curves. The dispersions used to form the nanocomposites were effective above 5 wt % of POSS, and the gel content increased with the addition of POSS. The DMA analysis exhibited an increase in the storage modulus (E') and a shifting of Tg to higher temperatures upon POSS incorporation. The weight loss indicated that the POSS promoted an increase in thermal stability of the epoxy resin. The Avrami parameters demonstrated that the addition of POSS decreased the Avrami constant (k'), increased the half-life (t1/2) of degradation and promoted changes in the Avrami exponent (n). These results suggest that the increase in the glass transition temperature and thermal stability depend on the reactive groups in the POSS nanoparticles.
publishDate 2013
dc.date.none.fl_str_mv 2013-01-01
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=S0104-14282013000300008
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282013000300008
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.4322/polimeros.2013.039
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 Associação Brasileira de Polímeros
publisher.none.fl_str_mv Associação Brasileira de Polímeros
dc.source.none.fl_str_mv Polímeros v.23 n.3 2013
reponame:Polímeros (São Carlos. Online)
instname:Associação Brasileira de Polímeros (ABPol)
instacron:ABPO
instname_str Associação Brasileira de Polímeros (ABPol)
instacron_str ABPO
institution ABPO
reponame_str Polímeros (São Carlos. Online)
collection Polímeros (São Carlos. Online)
repository.name.fl_str_mv Polímeros (São Carlos. Online) - Associação Brasileira de Polímeros (ABPol)
repository.mail.fl_str_mv ||revista@abpol.org.br
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