Study of recycling routes for poly-(propylene)/flax fibre non-woven composites

Study of recycling routes for poly-(propylene)/flax fibre non-woven composites

Karim BehlouliJustin Mérotte Jérémie Le Bihan Nicolas Renouard Antoine Kervoëlen Marie Fournet Alain Bourmaud 

Ecotechnilin SAS BP 244, 79197 Yvetot, France

Automotive Performance Materials Rue des Prés Potets, Parc des Cortots, 21121 Fontaine-lès-Dijon, France

Institut de Recherche Dupuy de Lôme, Université de Bretagne Sud Rue de Saint Maudé BP 92116, 56321 Lorient Cedex, France

Corresponding Author Email:
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The incorporation of plant fiber in thermoplastic composites is growing rapidly; the issue of recycling and management of wastes of these new materials arises. In this article, we studied two different technology paths to value of shredded clipping of PP-flax non-woven composites; these products being currently not recycled. Firstly, we reintroduced a fraction of crushed cutting wastes in a nonwoven PP-flax during its manufacture phase, which represents a strongly innovating process. Despite a significant drop in fiber lengths that penalizes the impact strength of the nonwoven composites, mechanical characterization of these new products have shown good behavior in bending until an incorporation rate of 30% by weight of wastes. The second part of the study is dedicated to the manufacture of compounds from cutting wastes. The rheology of the products, their structure and mechanical properties allow to consider industrial uses of these compounds that are able to compete with existing biocomposites, especially regarding their tensile stress and impact energy. 


thermoplastic, vegetal fiber, recycling, mechanical properties, viscosity, injection moulding, life cycle analysis

Extended abstract
1. Introduction
2. Matériaux et méthodes
3. Résultats et discussion
4. Conclusion

Les auteurs souhaitent remercier le ministère de la Recherche ainsi que l’Agence pour le Développement et la Maîtrise de l’Énergie (ADEME) pour leur soutien financier.


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