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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/54588
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dc.creatorBreno Nonato de Melopt_BR
dc.creatorVânya Márcia Duarte Pasapt_BR
dc.creatorMaximiliano Delany Martinspt_BR
dc.creatorWaldemar Augusto de Almeida Macedopt_BR
dc.creatorEduardo Perini Munizpt_BR
dc.date.accessioned2023-06-06T19:11:36Z-
dc.date.available2023-06-06T19:11:36Z-
dc.date.issued2018-06-
dc.citation.volume26pt_BR
dc.citation.issue6pt_BR
dc.citation.spage2514pt_BR
dc.citation.epage2521pt_BR
dc.identifier.doihttps://doi.org/10.1007/s10924-017-1148-5pt_BR
dc.identifier.issn1572-8919pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/54588-
dc.description.resumoLuffa Cylindrica (Luffa Aegypitiaca Miller) fibers with their surface modified by mercerization and TDI were used as a reinforcer in a polyurethane matrix. It was possible to confirm the fiber reaction with TDI by XPS and Elemental Analysis. TG, DTG, DSC, X-ray diffraction and SEM show that there is some surface modification after treatment. The mechanical properties of a polyurethane matrix (castor oil/MDI, NCO/OH = 1.0) and of a composite matrix containing 10% of fibers were compared. The composites absorb more water than pure polyurethane as a result of the hydrophilic behavior of natural fibers, but water sorption was smaller for fibers mercerized and treated with TDI. The tensile moduli observed for composites reinforced with untreated and mercerized fibers were similar but increased 35% with the use of mercerized/TDI modified fiber.TDI treatment caused an increase of 50% in maximum load compared to the polymeric matrix.pt_BR
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológicopt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE QUÍMICApt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofJournal of Polymers and the Environment-
dc.rightsAcesso Restritopt_BR
dc.subjectSurface fiber treatmentpt_BR
dc.subjectLuffa Cylindricapt_BR
dc.subjectCastor oil polyurethanept_BR
dc.subjectGreen compositespt_BR
dc.subjectFiber analysispt_BR
dc.subject.otherFísico-químicapt_BR
dc.subject.otherFibraspt_BR
dc.subject.otherÓleo de ricinopt_BR
dc.subject.otherÓleo de mamonapt_BR
dc.subject.otherPolímerospt_BR
dc.subject.otherPropriedades mecânicaspt_BR
dc.subject.otherDiisocianato de toluenopt_BR
dc.subject.otherRaios X - Difraçãopt_BR
dc.subject.otherTermogravimetriapt_BR
dc.subject.otherMicroscopia eletrônica de varredurapt_BR
dc.titleStrengthening of a polyurethane matrix by Luffa Cylindrica treated with TDI: water absorption and mechanical propertiespt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://link.springer.com/article/10.1007/s10924-017-1148-5pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-2681-3881pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-2510-3845pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-4010-8043pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-5451-9965pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-0500-4786pt_BR
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