Strengthening of a polyurethane matrix by Luffa Cylindrica treated with TDI: water absorption and mechanical properties

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dc.creatorBreno Nonato de Melo
dc.creatorVânya Márcia Duarte Pasa
dc.creatorMaximiliano Delany Martins
dc.creatorWaldemar Augusto de Almeida Macedo
dc.creatorEduardo Perini Muniz
dc.date.accessioned2023-06-06T19:11:36Z
dc.date.accessioned2025-09-09T00:54:09Z
dc.date.available2023-06-06T19:11:36Z
dc.date.issued2018-06
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.identifier.doihttps://doi.org/10.1007/s10924-017-1148-5
dc.identifier.issn1572-8919
dc.identifier.urihttps://hdl.handle.net/1843/54588
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of Polymers and the Environment
dc.rightsAcesso Restrito
dc.subjectFísico-química
dc.subjectFibras
dc.subjectÓleo de ricino
dc.subjectÓleo de mamona
dc.subjectPolímeros
dc.subjectPropriedades mecânicas
dc.subjectDiisocianato de tolueno
dc.subjectRaios X - Difração
dc.subjectTermogravimetria
dc.subjectMicroscopia eletrônica de varredura
dc.subject.otherSurface fiber treatment
dc.subject.otherLuffa Cylindrica
dc.subject.otherCastor oil polyurethane
dc.subject.otherGreen composites
dc.subject.otherFiber analysis
dc.titleStrengthening of a polyurethane matrix by Luffa Cylindrica treated with TDI: water absorption and mechanical properties
dc.typeArtigo de periódico
local.citation.epage2521
local.citation.issue6
local.citation.spage2514
local.citation.volume26
local.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.
local.identifier.orcidhttps://orcid.org/0000-0002-2681-3881
local.identifier.orcidhttps://orcid.org/0000-0002-2510-3845
local.identifier.orcidhttps://orcid.org/0000-0003-4010-8043
local.identifier.orcidhttps://orcid.org/0000-0001-5451-9965
local.identifier.orcidhttps://orcid.org/0000-0002-0500-4786
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE QUÍMICA
local.publisher.initialsUFMG
local.url.externahttps://link.springer.com/article/10.1007/s10924-017-1148-5

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