Effect of surface treatment on the technological properties of coconut fiber-reinforced plant polyurethane composites

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorFaria, Douglas Lamounier-
Autor(es): dc.creatorMendes, Lourival Marin-
Autor(es): dc.creatorGuimarães Junior, José Benedito-
Data de aceite: dc.date.accessioned2026-02-09T11:52:32Z-
Data de disponibilização: dc.date.available2026-02-09T11:52:32Z-
Data de envio: dc.date.issued2023-06-06-
Data de envio: dc.date.issued2023-06-06-
Data de envio: dc.date.issued2022-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/56945-
Fonte completa do material: dc.identifierhttps://link.springer.com/article/10.1007/s11356-023-25946-1-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1149381-
Descrição: dc.descriptionPolymeric composites reinforced with plant fibers have numerous advantages, such as low cost, high raw material availability and good physical, mechanical and thermal properties. Thus, in recent years, they have been studied as thermal insulation substitutes for synthetic polymers in buildings. The aim of this study was to evaluate the technological properties of castor oil–based polyurethane composites reinforced with coconut fibers treated with hot water, alkaline solutions of NaOH and Ca(OH)2 and corona discharge and without surface treatment as materials for the thermal insulation of buildings. The composites were produced by the hand lay–up method followed by compression; 10% by weight coconut fibers were used to replace the synthetic polymer. Specimens were produced, and physical, mechanical, thermal and microstructural tests were performed. The results showed that the polymer had a thermal conductivity of 0.016 W/(mK), while the composites produced with fibers treated with NaOH had a thermal conductivity of 0.028 W/(mK); therefore, these polymers are considered insulating materials (k = 0.01 to 1.0 W/(mK)). Thus, the composites produced with coconut fibers can be considered as lighter, less expensive and environmentally friendly alternatives to synthetic polymers.-
Idioma: dc.languageen-
Publicador: dc.publisherSpringer-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceEnvironmental Science and Pollution Research-
Palavras-chave: dc.subjectThermoset matrices-
Palavras-chave: dc.subjectBiocomposites-
Palavras-chave: dc.subjectCocos nucifera-
Palavras-chave: dc.subjectThermal conductivity-
Palavras-chave: dc.subjectMechanical properties-
Palavras-chave: dc.subjectCoir fiber composites-
Título: dc.titleEffect of surface treatment on the technological properties of coconut fiber-reinforced plant polyurethane composites-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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