Benzoxazine Resin/Carbon Nanotube Nanostructured Composite's Degradation Kinetic

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dc.contributor.authorUntem, Flavia O. [UNESP]
dc.contributor.authorBotelho, Edson C. [UNESP]
dc.contributor.authorRezende, Mirabel C.
dc.contributor.authorCosta, Michelle Leali [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionAMR IAE DCTA
dc.date.accessioned2014-12-03T13:11:49Z
dc.date.available2014-12-03T13:11:49Z
dc.date.issued2014-07-01
dc.description.abstractIn the last decades a new class of thermoset phenolic resin is emerging as a substitute of the traditional epoxy and phenolic resins in the aircraft industry. This new class is called polybenzoxazines and its associates the epoxy resin's mechanical properties and phenolic resin's thermal and flame retardant properties, resulting in a resin with superior properties when analyzed with the others singly. The introduction of carbon nanotubes in low concentration into polymeric matrices can produce nanostructured materials with good properties. Thus, in this study, nanostructured composites of benzoxazine resin were processed with different concentration of carbon nanotubes (0.1%, 0.5% and 1.0% w/w). In order to evaluate the thermostability of the benzoxazine resin and its nanostructured composites, it was performed a degradation kinetic study using the thermogravimetric technique. For that, the analysis have been done with the temperature ranging from 25 degrees C to 1000 degrees C at nitrogen atmosphere (100 mL . min(-1)) and in different heating rates (2, 4, 6, 8, 10 and 20 degrees C . min(-1)), in order to obtain the kinetic parameters (activation energy, E-a, and pre-exponential factor, A), based on Ozawa-Wall-Flynn model. The results showed excellent agreement between the thermogravimetric curves obtained and the Ozawa-Wall-Flynn method. The degradation kinetic study showed that the introduction of carbon nanotubes in the benzoxazine matrix does not change the thermostability of the resin, so that it does not have a significant influence in the shelf life of the material.en
dc.description.affiliationSao Paulo State Univ UNESP, Mat & Technol Dept, BR-12516410 Guaratingueta, SP, Brazil
dc.description.affiliationAMR IAE DCTA, Mat Div, BR-12228904 Sao Jose Dos Campos, SP, Brazil
dc.description.affiliationUnespSao Paulo State Univ UNESP, Mat & Technol Dept, BR-12516410 Guaratingueta, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdFAPESP: 11/18972-3
dc.description.sponsorshipIdCNPq: 157672/2011-5
dc.format.extent5145-5150
dc.identifierhttp://dx.doi.org/10.1166/jnn.2014.8697
dc.identifier.citationJournal Of Nanoscience And Nanotechnology. Valencia: Amer Scientific Publishers, v. 14, n. 7, p. 5145-5150, 2014.
dc.identifier.doi10.1166/jnn.2014.8697
dc.identifier.issn1533-4880
dc.identifier.lattes4378078337343660
dc.identifier.orcid0000-0001-8338-4879
dc.identifier.urihttp://hdl.handle.net/11449/113589
dc.identifier.wosWOS:000332926400052
dc.language.isoeng
dc.publisherAmer Scientific Publishers
dc.relation.ispartofJournal of Nanoscience and Nanotechnology
dc.relation.ispartofjcr1.354
dc.relation.ispartofsjr0,326
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectDegradation Kineticen
dc.subjectBenzoxazine Resinen
dc.subjectCarbon Nanotubesen
dc.subjectThermogravimetricen
dc.subjectShelf-Lifeen
dc.titleBenzoxazine Resin/Carbon Nanotube Nanostructured Composite's Degradation Kineticen
dc.typeArtigo
dcterms.rightsHolderAmer Scientific Publishers
unesp.author.lattes4378078337343660[2]
unesp.author.orcid0000-0001-8338-4879[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Guaratinguetápt

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