Zirconium-methacrylate oxoclusters as new hybrid materials for the modification of epoxy systems
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://link.springer.com/article/10.1007%2Fs10853-015-8854-y http://hdl.handle.net/11449/129623 |
Resumo: | Oxozirconium clusters bearing methacrylate moiety (ZrMe) were synthesized by sol-gel process and used in epoxy networks to develop epoxy-based nanocomposites with potential application as encapsulant for light-emitting diode. Diglycidyl ether of bisphenol A-based epoxy resin was previously functionalized with acrylic acid to introduce some vinyl groups in the matrix and improve its interaction with the oxocluster. The ZrMe particles were previously dispersed in the epoxy matrix or in the 4-methyl-tetrahydrophthalic anhydride used as hardener, and the systems were cured with anhydride or with a combination of anhydride and benzoyl peroxide. The last compound promotes the covalent bond between the epoxy matrix and the ZrMe through free radical reactions between the vinyl groups. The dispersion of ZrMe into the epoxy matrix resulted in a significant increase in viscosity, mainly for systems dispersed with a combination of high shear mechanical mixing and ultrasonification. The dispersion of ZrMe into the anhydride resulted in nanocomposites with higher transparency, better dispersion of the oxocluster into the matrix bulk, as observed by transmission electron microscopy, and higher thermal conductivity, mainly for systems cured with anhydride and peroxide. The use of anhydride in combination with BPO also resulted in significant increase in glass transition temperature. |
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Zirconium-methacrylate oxoclusters as new hybrid materials for the modification of epoxy systemsOxozirconium clusters bearing methacrylate moiety (ZrMe) were synthesized by sol-gel process and used in epoxy networks to develop epoxy-based nanocomposites with potential application as encapsulant for light-emitting diode. Diglycidyl ether of bisphenol A-based epoxy resin was previously functionalized with acrylic acid to introduce some vinyl groups in the matrix and improve its interaction with the oxocluster. The ZrMe particles were previously dispersed in the epoxy matrix or in the 4-methyl-tetrahydrophthalic anhydride used as hardener, and the systems were cured with anhydride or with a combination of anhydride and benzoyl peroxide. The last compound promotes the covalent bond between the epoxy matrix and the ZrMe through free radical reactions between the vinyl groups. The dispersion of ZrMe into the epoxy matrix resulted in a significant increase in viscosity, mainly for systems dispersed with a combination of high shear mechanical mixing and ultrasonification. The dispersion of ZrMe into the anhydride resulted in nanocomposites with higher transparency, better dispersion of the oxocluster into the matrix bulk, as observed by transmission electron microscopy, and higher thermal conductivity, mainly for systems cured with anhydride and peroxide. The use of anhydride in combination with BPO also resulted in significant increase in glass transition temperature.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Financiadora de Estudos e Projetos-FINEP in BrazilFundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ)Universidade Federal do Rio de Janeiro (IFRJ), Inst Macromol, Ctr Tecnol, BR-21941598 Rio de Janeiro, RJ, BrasilUniv Lyon, F-69003 Lyon, FranceINSA Lyon, F-69621 Villeurbanne, FranceCNRS, UMR 5223, Villeurbanne, FranceUniversidade Estadual Paulista (UNESP), Instituto de Química, BR-14801970 Araraquara, SP, BrasilUniversidade Estadual Paulista (UNESP), Instituto de Química, BR-14801970 Araraquara, SP, BrasilSpringerUniversidade Federal do Rio de Janeiro (UFRJ)Univ LyonINSA LyonCNRSUniversidade Estadual Paulista (Unesp)Soares, Bluma G.Caplan, ShalimarLivi, SebastienGatti, Alexandre [UNESP]Ribeiro, Sidney J. L. [UNESP]2015-10-22T06:18:07Z2015-10-22T06:18:07Z2015-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article2903-2913application/pdfhttp://link.springer.com/article/10.1007%2Fs10853-015-8854-yJournal Of Materials Science. New York: Springer, v. 50, n. 7, p. 2903-2913, 2015.0022-2461http://hdl.handle.net/11449/12962310.1007/s10853-015-8854-yWOS:000349321600008WOS000349321600008.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal Of Materials Science2.9930,807info:eu-repo/semantics/openAccess2023-11-27T06:11:46Zoai:repositorio.unesp.br:11449/129623Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:50:09.365487Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Zirconium-methacrylate oxoclusters as new hybrid materials for the modification of epoxy systems |
title |
Zirconium-methacrylate oxoclusters as new hybrid materials for the modification of epoxy systems |
spellingShingle |
Zirconium-methacrylate oxoclusters as new hybrid materials for the modification of epoxy systems Soares, Bluma G. |
title_short |
Zirconium-methacrylate oxoclusters as new hybrid materials for the modification of epoxy systems |
title_full |
Zirconium-methacrylate oxoclusters as new hybrid materials for the modification of epoxy systems |
title_fullStr |
Zirconium-methacrylate oxoclusters as new hybrid materials for the modification of epoxy systems |
title_full_unstemmed |
Zirconium-methacrylate oxoclusters as new hybrid materials for the modification of epoxy systems |
title_sort |
Zirconium-methacrylate oxoclusters as new hybrid materials for the modification of epoxy systems |
author |
Soares, Bluma G. |
author_facet |
Soares, Bluma G. Caplan, Shalimar Livi, Sebastien Gatti, Alexandre [UNESP] Ribeiro, Sidney J. L. [UNESP] |
author_role |
author |
author2 |
Caplan, Shalimar Livi, Sebastien Gatti, Alexandre [UNESP] Ribeiro, Sidney J. L. [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Federal do Rio de Janeiro (UFRJ) Univ Lyon INSA Lyon CNRS Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Soares, Bluma G. Caplan, Shalimar Livi, Sebastien Gatti, Alexandre [UNESP] Ribeiro, Sidney J. L. [UNESP] |
description |
Oxozirconium clusters bearing methacrylate moiety (ZrMe) were synthesized by sol-gel process and used in epoxy networks to develop epoxy-based nanocomposites with potential application as encapsulant for light-emitting diode. Diglycidyl ether of bisphenol A-based epoxy resin was previously functionalized with acrylic acid to introduce some vinyl groups in the matrix and improve its interaction with the oxocluster. The ZrMe particles were previously dispersed in the epoxy matrix or in the 4-methyl-tetrahydrophthalic anhydride used as hardener, and the systems were cured with anhydride or with a combination of anhydride and benzoyl peroxide. The last compound promotes the covalent bond between the epoxy matrix and the ZrMe through free radical reactions between the vinyl groups. The dispersion of ZrMe into the epoxy matrix resulted in a significant increase in viscosity, mainly for systems dispersed with a combination of high shear mechanical mixing and ultrasonification. The dispersion of ZrMe into the anhydride resulted in nanocomposites with higher transparency, better dispersion of the oxocluster into the matrix bulk, as observed by transmission electron microscopy, and higher thermal conductivity, mainly for systems cured with anhydride and peroxide. The use of anhydride in combination with BPO also resulted in significant increase in glass transition temperature. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-10-22T06:18:07Z 2015-10-22T06:18:07Z 2015-04-01 |
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://link.springer.com/article/10.1007%2Fs10853-015-8854-y Journal Of Materials Science. New York: Springer, v. 50, n. 7, p. 2903-2913, 2015. 0022-2461 http://hdl.handle.net/11449/129623 10.1007/s10853-015-8854-y WOS:000349321600008 WOS000349321600008.pdf |
url |
http://link.springer.com/article/10.1007%2Fs10853-015-8854-y http://hdl.handle.net/11449/129623 |
identifier_str_mv |
Journal Of Materials Science. New York: Springer, v. 50, n. 7, p. 2903-2913, 2015. 0022-2461 10.1007/s10853-015-8854-y WOS:000349321600008 WOS000349321600008.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal Of Materials Science 2.993 0,807 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
2903-2913 application/pdf |
dc.publisher.none.fl_str_mv |
Springer |
publisher.none.fl_str_mv |
Springer |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128988303851520 |