Study of the interface in natural fibres reinforced poly(lactic acid) biocomposites modified by optimized organosilane treatments - Archive ouverte HAL
Article Dans Une Revue Industrial Crops and Products Année : 2014

Study of the interface in natural fibres reinforced poly(lactic acid) biocomposites modified by optimized organosilane treatments

Résumé

This study investigates the effect of optimized organosilane treatments on the surface properties of flax fibres and the resulting mechanical properties and interface modifications in flax fibres reinforced poly(lactic acid) (PLA) biocomposites. Optimizing the treatment conditions increases the hydrophobicity of the fibres, and improves significantly the mechanical properties of the biocomposites, while reducing largely the scattering. The origins of the reinforcement at the fibre/matrix interface are investigated at the macromolecular and the microstructural levels by physico-chemical and mechanical cross-analyses. It is shown that it results from both modified chemical coupling and mechanical interlocking at the fibre/matrix interface. Dynamic mechanical thermal analysis reveals a decrease in damping for treated biocomposites because of the formation of a layer of immobilized macromolecular chains resulting from strong interactions at the interface. In situ observations of crack propagation by scanning electron microscopy illustrate clearly that the treated biocomposites show a cohesive interfacial failure at much higher loads, highlighting the enhanced load transfer from the PLA to the flax fibres.
Fichier principal
Vignette du fichier
study-of-the-interface-in-natural-fibres.pdf (2.79 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-02914352 , version 1 (25-01-2021)

Identifiants

Citer

Nicolas Le Moigne, Marc Longerey, Jean-Marie Taulemesse, Jean-Charles Benezet, Anne Bergeret. Study of the interface in natural fibres reinforced poly(lactic acid) biocomposites modified by optimized organosilane treatments. Industrial Crops and Products, 2014, 52, pp.481-494. ⟨10.1016/j.indcrop.2013.11.022⟩. ⟨hal-02914352⟩
57 Consultations
215 Téléchargements

Altmetric

Partager

More