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The Effects of Sodium Carbonate and Bicarbonate Treatments on Sisal Fibre Composites

Authors :
Júlio Cesar dos Santos
Pablo Resende Oliveira
Rodrigo Teixeira Santos Freire
Luciano Machado Gomes Vieira
Juan Carlos Campos Rubio
Túlio Hallak Panzera
Source :
Materials Research, Vol 25 (2022)
Publication Year :
2022
Publisher :
Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol), 2022.

Abstract

Abstract This work investigates the effect of eco-friendly chemical treatments on the mechanical and physical properties of composite laminates based on sisal fibres. A 2231 full-factorial design is conducted to test the influence of chemical solution types, fibre treatment time, and polymer matrix type on the mechanical and morphological characterisation of the composites. Chemical treatments remove impurities from fibre surfaces, and enhance fibre-matrix adhesion. The treatments, especially with sodium carbonate (Na2CO3), also progressively reduce the hemicellulose fibre content. Polyester composites made with sisal fibres treated with Na2CO3 for 96h achieve enhanced strength and stiffness under tensile, compressive and impact loads. The results evidence the feasibility and efficiency of the proposed eco-friendly treatments for natural fibres and the application of renewable fibre laminates in secondary structural applications.

Details

Language :
English
ISSN :
15161439 and 19805373
Volume :
25
Database :
Directory of Open Access Journals
Journal :
Materials Research
Publication Type :
Academic Journal
Accession number :
edsdoj.0e53f8c9d43a4ff8a94cf245d8b7a1d8
Document Type :
article
Full Text :
https://doi.org/10.1590/1980-5373-mr-2021-0464