Título:	Chemical treatment of curaua fibres and its effect on the mechanical performance of fibre/polyester composites
Autor(es):	Teixeira, Linconl Araújo Dalla Júnior, L. Vilson Luz, Sandra Maria da
ORCID:	https://orcid.org/0000-0002-2922-3027 https://orcid.org/0000-0001-5557-7331 https://orcid.org/0000-0002-2223-0021
Assunto:	Curauá Poliéster Tratamentos alcalinos e silano Caracterização química Difração de raios X (XRD) Calorimetria de varredura diferencial (DSC) Teste de tração Teste de impacto
Data de publicação:	21-Dez-2020
Editora:	Taylor & Francis
Referência:	TEIXEIRA, Linconl A.; DALLA JUNIOR, L. Vilson; LUZ, Sandra Maria da. Chemical treatment of curaua fibres and its effect on the mechanical performance of fibre/polyester composites. Plastics, Rubber and Composites Macromolecular Engineering, v. 50, n. 4, 2021. DOI: https://doi.org/10.1080/14658011.2020.1862978.
Abstract:	This study investigated the influence of the surface treatment of curaua fibres (Ananas erectifolius) on the morphological, thermal and mechanical properties of polyester composites when the treated fibres (10 wt-%) were added. The following treatment agents were assessed: 10% Ba(OH)2, 14% Ca(OH)2, 5% NaOH, 10% KOH and 5% silane. The treatments removed amorphous components, thereby increasing the crystallinity of the fibres. Among the alkali treatments, KOH gave the highest crystallinity index (67.09%), Ca(OH)2 had the best tensile strength (19 MPa) and Ca(OH)2 treatment resulted in the highest composite thermal stability (315°C). Fibres treated with Ba(OH)2 resulted in the composite with the greatest resistance to impact (55 vs 10 J m−1 for the neat matrix). Finally, the silane-treated fibres resulted in composites with a better performance than the other treatments. There was a prominent pattern of improved performance for the silane-treated fibre composites in all the analyses performed in this study.
Unidade Acadêmica:	Faculdade de Ciências e Tecnologias em Engenharia (FCTE) – Campus UnB Gama
DOI:	https://doi.org/10.1080/14658011.2020.1862978
Versão da editora:	https://www.tandfonline.com/doi/full/10.1080/14658011.2020.1862978
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