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Poster de conférence

Influence of the flax fibre chemical composition on mechanical properties of epoxy biocomposite

Abstract : Natural fibres based composites are increasingly used mainly because of their low density and positive life cycle assessment. Nevertheless an improvement of their mechanical properties is required. A better control of i) the fibre/matrix interface and ii) the intra-fibrillar interface within the fibre bundles (composed of cellulose micro-fibrils, hemicelluloses, lignins, pectins and lipophilic extractives) has to be established. The aim of this study is to investigate the influence of different flax treatments (among them water, alcohol, surfactant, alkaline treatments) known to remove selectively flax fibre components, and their effect on flax fabrics properties and on interfacial behaviour of flax/epoxy biocomposites. Components removal was evaluated by chemical composition and FTIR. Mechanical tests and SEM observations were used to study the composite interface. A defibrillation phenomenon within the fibre bundles was responsible for a significant decrease of the biocomposite transverse strength whereas the porosity was reduced for all the treatments used.
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https://hal.mines-ales.fr/hal-03684467
Contributeur : Anne BERGERET Connectez-vous pour contacter le contributeur
Soumis le : mercredi 1 juin 2022 - 14:04:39
Dernière modification le : samedi 25 juin 2022 - 03:04:22
Archivage à long terme le : : vendredi 2 septembre 2022 - 19:12:00

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Poster EPB_José Acera.pdf
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  • HAL Id : hal-03684467, version 1

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Anne Bergeret, J Acera Fernández, Nicolas Le Moigne, R El Hage, A Le Duc, et al.. Influence of the flax fibre chemical composition on mechanical properties of epoxy biocomposite. Eurofillers Polymer Blends 2015, Apr 2015, Montpellier, France. ⟨hal-03684467⟩

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