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dc.contributor.authorPizzutto, Caio Enricopt_BR
dc.contributor.authorSuave, Jaquelinept_BR
dc.contributor.authorBertholdi, Jonaspt_BR
dc.contributor.authorPezzin, Sérgio Henriquept_BR
dc.contributor.authorCoelho, Luiz Antônio Ferreirapt_BR
dc.contributor.authorAmico, Sandro Campospt_BR
dc.date.accessioned2011-11-11T01:19:23Zpt_BR
dc.date.issued2011pt_BR
dc.identifier.issn1516-1439pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/34305pt_BR
dc.description.abstractIn 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.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofMaterials research : ibero-american journal of materials. São Carlos, SP. vol. 14, n. 2 (June 2011), p. 256-263pt_BR
dc.rightsOpen Accessen
dc.subjectNanotubos de carbonopt_BR
dc.subjectCarbon nanotubesen
dc.subjectDispersionen
dc.subjectNanocompósitospt_BR
dc.subjectHardeneren
dc.subjectNanocompositesen
dc.titleStudy of epoxy/CNT nanocomposites prepared via dispersion in the hardenerpt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000782235pt_BR
dc.type.originNacionalpt_BR


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