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Article

Impact of Thermomechanical Fiber Pre-Treatment Using Twin-Screw Extrusion on the Production and Properties of Renewable Binderless Coriander Fiberboards

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Laboratoire de Chimie Agro-industrielle (LCA), Université de Toulouse, Institut National de la Recherche Agronomique (INRA), Institut National Polytechnique de Toulouse (INPT), 31030 Toulouse CEDEX 4, France
2
Ovalie Innovation, 2 Rue Marguerite Duras, 32000 Auch, France
*
Author to whom correspondence should be addressed.
Int. J. Mol. Sci. 2017, 18(7), 1539; https://doi.org/10.3390/ijms18071539
Received: 19 June 2017 / Revised: 5 July 2017 / Accepted: 13 July 2017 / Published: 17 July 2017
(This article belongs to the Special Issue Biodegradable Materials 2017)
The aim of this study consisted of manufacturing renewable binderless fiberboards from coriander straw and a deoiled coriander press cake, thus at the same time ensuring the valorization of crop residues and process by-products. The press cake acted as a natural binder inside the boards owing to the thermoplastic behavior of its protein fraction during thermopressing. The influence of different fiber-refining methods was evaluated and it was shown that a twin-screw extrusion treatment effectively improved fiber morphology and resulted in fiberboards with enhanced performance as compared to a conventional grinding process. The best fiberboard was produced with extrusion-refined straw using a 0.4 liquid/solid (L/S) ratio and with 40% press cake addition. The water sensitivity of the boards was effectively reduced by 63% through the addition of an extrusion raw material premixing operation and thermal treatment of the panels at 200 °C, resulting in materials with good performance showing a flexural strength of 29 MPa and a thickness swelling of 24%. Produced without the use of any chemical adhesives, these fiberboards could thus present viable, sustainable alternatives for current commercial wood-based materials such as oriented strand board, particleboard and medium-density fiberboard, with high cost-effectiveness. View Full-Text
Keywords: binderless fiberboards; fiber refining; thermopressing; Coriandrum sativum L.; press cake; proteins binderless fiberboards; fiber refining; thermopressing; Coriandrum sativum L.; press cake; proteins
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MDPI and ACS Style

Uitterhaegen, E.; Labonne, L.; Merah, O.; Talou, T.; Ballas, S.; Véronèse, T.; Evon, P. Impact of Thermomechanical Fiber Pre-Treatment Using Twin-Screw Extrusion on the Production and Properties of Renewable Binderless Coriander Fiberboards. Int. J. Mol. Sci. 2017, 18, 1539. https://doi.org/10.3390/ijms18071539

AMA Style

Uitterhaegen E, Labonne L, Merah O, Talou T, Ballas S, Véronèse T, Evon P. Impact of Thermomechanical Fiber Pre-Treatment Using Twin-Screw Extrusion on the Production and Properties of Renewable Binderless Coriander Fiberboards. International Journal of Molecular Sciences. 2017; 18(7):1539. https://doi.org/10.3390/ijms18071539

Chicago/Turabian Style

Uitterhaegen, Evelien, Laurent Labonne, Othmane Merah, Thierry Talou, Stéphane Ballas, Thierry Véronèse, and Philippe Evon. 2017. "Impact of Thermomechanical Fiber Pre-Treatment Using Twin-Screw Extrusion on the Production and Properties of Renewable Binderless Coriander Fiberboards" International Journal of Molecular Sciences 18, no. 7: 1539. https://doi.org/10.3390/ijms18071539

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