Influence of the polyhedral oligomeric silsesquioxane n-phenylaminopropyl - POSS in the thermal stability and the glass transition temperature of epoxy resin
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/224389 |
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, dynamicmechanical 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 (t 1/2) 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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Pistor, ViniciusSoares, Bluma GuentherMauler, Raquel Santos2021-07-23T04:40:59Z20130104-1428http://hdl.handle.net/10183/224389000897555In this study, epoxy nanocomposites containing different fractions of n-phenylaminopropyl (POSS) were prepared. The nanocomposites were studied by transmission electron microscopy (TEM), gel content, dynamicmechanical 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 (t 1/2) 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.application/pdfengPolímeros: ciência e tecnologia. São Carlos. Vol. 23, n. 3 (maio/jun. 2013), p. 331-338PolímerosEstabilidade térmicaComposto inorgânicoNanocompósitosEpoxyNanocompositesThermal stabilityGlass transitionInfluence of the polyhedral oligomeric silsesquioxane n-phenylaminopropyl - POSS in the thermal stability and the glass transition temperature of epoxy resininfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT000897555.pdf.txt000897555.pdf.txtExtracted Texttext/plain27976http://www.lume.ufrgs.br/bitstream/10183/224389/2/000897555.pdf.txtad06e38d53b01baf2697dd279cf40386MD52ORIGINAL000897555.pdfTexto completo (inglês)application/pdf3031998http://www.lume.ufrgs.br/bitstream/10183/224389/1/000897555.pdf27a8853d006af88893a94e97303ee1d1MD5110183/2243892021-08-18 04:39:43.981715oai:www.lume.ufrgs.br:10183/224389Repositório InstitucionalPUBhttps://lume.ufrgs.br/oai/requestlume@ufrgs.bropendoar:2021-08-18T07:39:43Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.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, Vinicius Polímeros Estabilidade térmica Composto inorgânico Nanocompósitos Epoxy 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, Vinicius |
author_facet |
Pistor, Vinicius 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, Vinicius Soares, Bluma Guenther Mauler, Raquel Santos |
dc.subject.por.fl_str_mv |
Polímeros Estabilidade térmica Composto inorgânico Nanocompósitos |
topic |
Polímeros Estabilidade térmica Composto inorgânico Nanocompósitos Epoxy Nanocomposites Thermal stability Glass transition |
dc.subject.eng.fl_str_mv |
Epoxy 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, dynamicmechanical 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 (t 1/2) 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.issued.fl_str_mv |
2013 |
dc.date.accessioned.fl_str_mv |
2021-07-23T04:40:59Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/other |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/224389 |
dc.identifier.issn.pt_BR.fl_str_mv |
0104-1428 |
dc.identifier.nrb.pt_BR.fl_str_mv |
000897555 |
identifier_str_mv |
0104-1428 000897555 |
url |
http://hdl.handle.net/10183/224389 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Polímeros: ciência e tecnologia. São Carlos. Vol. 23, n. 3 (maio/jun. 2013), p. 331-338 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
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Repositório Institucional da UFRGS |
collection |
Repositório Institucional da UFRGS |
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Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS) |
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lume@ufrgs.br |
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