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Polypropylene/natural fibres composites: Analysis of fibre dimensions after compounding and observations of fibre rupture by rheo-optics

Abstract : Fibre size distribution and the way how fibres are breaking during compounding with polypropylene were analysed. Two types of cellulose-based fibres were used: natural flax and man-made (regenerated) cellulose, Tencel. No significant influence of Tencel initial fibre size on its final size after processing was observed. However, the fibre type and the presence of defects have a stronger effect on the rupture. The value of the average final length of flax fibres was found to be similar to the distance between kink bands. In order to understand fibre rupture mechanisms, they were observed using a rheo-optical system which enabled visualization of fibre break-up. All fibres studied broke by fatigue after an accumulation of strain, contrarily to what is known for glass fibres. Flax fibres broke around the kink bands while Tencel® broke after numerous bending.
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https://hal-mines-paristech.archives-ouvertes.fr/hal-00623531
Contributeur : Magalie Prudon <>
Soumis le : mercredi 14 septembre 2011 - 15:27:04
Dernière modification le : jeudi 24 septembre 2020 - 17:22:54

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Anne Le Duc, Bruno Vergnes, Tatiana Budtova. Polypropylene/natural fibres composites: Analysis of fibre dimensions after compounding and observations of fibre rupture by rheo-optics. Composites Part A: Applied Science and Manufacturing, Elsevier, 2011, 42 (11), pp.1727-1737. ⟨10.1016/j.compositesa.2011.07.027⟩. ⟨hal-00623531⟩

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