Evaluation of flexural modulus, flexural strength and degree of conversion in BISGMA/TEGDMA resin filled with montmorillonite nanoparticles

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dc.contributor.authorCAMPOS, LUIZA M.P.
dc.contributor.authorBOARO, LETICIA C.
dc.contributor.authorSANTOS, TAMIRIS M.R.
dc.contributor.authorMARQUES, PAMELA A.
dc.contributor.authorALMEIDA, SONIA R.Y.
dc.contributor.authorBRAGA, ROBERTO R.
dc.contributor.authorPARRA, DUCLERC F.
dc.coverageInternacionalpt_BR
dc.date.accessioned2017-01-06T11:27:40Z
dc.date.available2017-01-06T11:27:40Z
dc.date.issued2016pt_BR
dc.description.abstractThis study had as its main objective to evaluate the flexural properties (strength and modulus) and degree of conversion of a dimethacrylate resin containing different amounts of nanoparticulated clay Montomorillonite (MMT) as filler. A series of composites containing similar amounts (in volume) of barium glass particles was also tested as control data. Eight formulations with polymeric matrix-based BisGMA/TEGDMA (Bisphenol A Bis(2-hydroxy-3 methacryloxypropyl)Ether/ Triethyleneglycol Dimethacrylate), four added with MMTand four added with barium glass in the volume concentration of 20, 30, 40 and 50 vol% were studied. The degree of conversion was determined using near-IR spectroscopy. Elastic modulus and flexural strength were determined by the three-point bending test. The dispersion of MMT nanoparticles was determined by means of X-ray diffraction and transmission electron microscopy analysis. The fillers montomorillonite and barium glass interacted with polymer matrix-based BisGMA/TEGDMA in a distinct manner. Although the addition of montomorillonite nanoparticles resulted in similar degree of conversion and higher elastic modulus values at all concentrations tested, only at the 20 vol% the flexural strength was statistically higher, compared to the control groups filled with barium glass. This could be related to the need of concentration optimization of montomorillonite for each type of polymer matrix in order to adjust or improve mechanical properties. The addition of low concentrations (<l 20% vol) of montomorillonite nanoparticles in dental composites resins – such as additive or hybrid filler – should be studied, aiming to the reduction of polymerization shrinkage, better mechanical properties and improvement of a new technology for future applications.pt_BR
dc.format.extent1-11pt_BR
dc.identifier.citationCAMPOS, LUIZA M.P.; BOARO, LETICIA C.; SANTOS, TAMIRIS M.R.; MARQUES, PAMELA A.; ALMEIDA, SONIA R.Y.; BRAGA, ROBERTO R.; PARRA, DUCLERC F. Evaluation of flexural modulus, flexural strength and degree of conversion in BISGMA/TEGDMA resin filled with montmorillonite nanoparticles. <b>Journal of Composite Materials</b>, v. 29, p. 1-11, 2016. DOI: <a href="https://dx.doi.org/10.1177/0021998316656925">10.1177/0021998316656925</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/26970.
dc.identifier.doi10.1177/0021998316656925pt_BR
dc.identifier.issn0021-9983pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-7626-880X
dc.identifier.percentilfi62.00
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/26970
dc.identifier.vol29pt_BR
dc.relation.ispartofJournal of Composite Materialspt_BR
dc.rightsopenAccesspt_BR
dc.subjectevaluation
dc.subjectmontmorillonite
dc.subjectnanoparticles
dc.subjectclays
dc.subjectnanocomposites
dc.subjectmechanical properties
dc.subjectflexural strength
dc.subjectx-ray diffraction
dc.subjecttransmission electron microscopy
dc.subjectscanning electron microscopy
dc.titleEvaluation of flexural modulus, flexural strength and degree of conversion in BISGMA/TEGDMA resin filled with montmorillonite nanoparticlespt_BR
dc.typeArtigo de periódicopt_BR
dspace.entity.typePublication
ipen.autorDUCLERC FERNANDES PARRA
ipen.autorTAMIRIS MARTINS RIBEIRO DOS SANTOS
ipen.autorLUIZA MELLO DE PAIVA CAMPOS
ipen.codigoautor562
ipen.codigoautor14099
ipen.codigoautor7219
ipen.contributor.ipenauthorDUCLERC FERNANDES PARRA
ipen.contributor.ipenauthorTAMIRIS MARTINS RIBEIRO DOS SANTOS
ipen.contributor.ipenauthorLUIZA MELLO DE PAIVA CAMPOS
ipen.date.recebimento17-01pt_BR
ipen.identifier.fi1.494pt_BR
ipen.identifier.ipendoc22803pt_BR
ipen.range.fi0.001 - 1.499
ipen.range.percentilfi50.00 - 74.99
ipen.type.genreArtigo
relation.isAuthorOfPublication67996d86-0a59-4ba2-8d38-facaa14e26c3
relation.isAuthorOfPublicationc06d7646-75bd-4817-9d03-1bd939c91c1f
relation.isAuthorOfPublication36f6b8d9-59dd-4b20-a90b-22fed2c352f2
relation.isAuthorOfPublication.latestForDiscovery36f6b8d9-59dd-4b20-a90b-22fed2c352f2
sigepi.autor.atividadeCAMPOS, LUIZA M.P.:7219:740:Spt_BR
sigepi.autor.atividadeSANTOS, TAMIRIS M.R.:14099:740:Npt_BR
sigepi.autor.atividadePARRA, DUCLERC F.:562:740:Npt_BR
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