Effect of Fiber Chemical Treatment of Nonwoven Coconut Fiber/Epoxy Composites Adhesion Obtained by RTM Process

Autor(es)

de Carvalho Benini, Kelly C. C. ^[1] ; Brocks, Thatiane ^[1] ; Montoro, Sergio R. ^[2] ; Hilario Cioffi, Maria Odila ^[1] ; Cornelis Voorwald, Herman Jacobus ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, Fatigue & Aeronaut Mat Res Grp, UNESP, 333 Dr Ariberto Pereira Da Cunha Ave, BR-12516410 Guaratingueta - Brazil

^[2] FATEC, Fac Tecnol, Rod Vereador Abel Fabricio Dias 4010, BR-12445010 Pindamonhangaba - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Polymer Composites; v. 38, n. 11, p. 2518-2527, NOV 2017.
• Citações Web of Science: 2

Resumo

In this work untreated and alkali treated nonwoven coconut fiber mats/epoxy resin composites were manufactured using the resin transfer molding process. The alkaline solution removes some impurities present on fibers superficial layers and the effect regarding fiber/matrix adhesion were investigated by thermogravimetric analysis, dynamic mechanical analysis (DMA), scanning electron microscopy (SEM), ultrasonic C-scan, and quasi-static flexural test. Results show a removing of some amorphous fibers constituents, mainly waxes, extractives, and hemicellulose, revealing the fiber roughness surface but no initial degradation temperature changing. Regarding the composites, a similar interfacial adhesion was observed in both one through the results of SEM, DMA and quasi-static flexural tests. The conclusion is that chemical treatment conditions applied on the fiber surface was been suitable to improve fiber roughness but did not the adhesion between coconut fibers mat and epoxy resin. (C) 2015 Society of Plastics Engineers (AU)

• Processo FAPESP: 06/02121-6 - Compósito processado via RTM
• Beneficiário: Maria Odila Hilário Cioffi
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores
• Processo FAPESP: 11/11311-1 - Predição da vida em fadiga de compósitos estruturais baseada em análises dinâmico-mecânicas
• Beneficiário: Thatiane Brocks
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 11/14153-8 - Compósitos de nanocelulose/PHBV: manta microfibrílica por eletrofiação
• Beneficiário: Kelly Cristina Coelho de Carvalho Benini
• Modalidade de apoio: Bolsas no Brasil - Doutorado