Production of fiberboard from rice straw thermomechanical extrudates by thermopressing : influence of fiber morphology, water and lignin content

Autor: Bunthan Ngo, Gerard Arbat, Laurent Labonne, Pere Mutjé, Marc Delgado-Aguilar, Dyna Theng, Philippe Evon
Přispěvatelé: Universitat de Girona (UdG), Royal University of Agriculture (RUA), Chimie Agro-Industrielle (CAI), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Ecole nationale supérieure des ingénieurs en arts chimiques et technologiques-Institut National de la Recherche Agronomique (INRA), Erasmus+KA107 project, Institut National Polytechnique de Toulouse - INPT (FRANCE), Institut National de la Recherche Agronomique - INRA (FRANCE), Royal University of Agriculture - RUA (CAMBODIA), Universitat de Girona - UdG (SPAIN), Laboratoire de Chimie Agro-Industrielle - LCA (Toulouse, France), Laboratoire de Chimie Agro-Industrielle (LCA), Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Supérieure de Chimie de Toulouse, Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: European Journal of Wood and Wood Products
European Journal of Wood and Wood Products, Springer Verlag, 2019, 77 (1), pp.15-32. ⟨10.1007/s00107-018-1358-0⟩
European Journal of Wood and Wood Products, Springer Verlag, 2018, 75 (711), pp.1-18. ⟨10.1007/s00107-018-1358-0⟩
© European Journal of Wood and Wood Products, 2018, vol. undef, núm. undef, p. undef
Articles publicats (D-EQATA)
Theng, Dyna Arbat Pujolràs, Gerard Delgado Aguilar, Marc Ngo, Bunthan Labonne, Laurent Mutjé Pujol, Pere Evon, Philippe 2018 Production of fiberboard from rice straw thermomechanical extrudates by thermopressing: influence of fiber morphology, water and lignin content European Journal Of Wood And Wood Products
DUGiDocs – Universitat de Girona
instname
ISSN: 0018-3768
1436-736X
DOI: 10.1007/s00107-018-1358-0⟩
Popis: International audience; The objective of this study was to investigate the influence of fiber morphology and molding parameters on the mechanical and physical properties of fiberboards made from rice straw. The rice straw was thermomechanically treated with a twin-screw extruder. Three parameters were investigated: the amount of water added at molding (0–20%), lignin content (0–25%), and the liquid/solid ratio used for extrudate production (0.33–1.07). A Doehlert experimental design was used to evaluate the effects of these factors on fiberboard properties. A liquid/solid ratio of 0.4 at extrudate production, the addition of 5% water at molding, and a lignin content of 8.9% were found to be optimal for bending properties. The fiberboard produced in these conditions had a density of 1414 kg/m3 (i.e. the densest board). Maximum flexural strength and elastic modulus were 50.3 MPa and 8.6 GPa, respectively. A thickness swelling of 23.6% and 17.6% water absorption were observed. The statistical analysis suggested that a good compromise between density and flexural properties could be obtained with the addition of 0% water, a lignin content of 25% and a liquid/solid ratio of 0.33 at extrudate production. Polynomial models suggested that the fiberboards produced in such conditions would have a maximum flexural strength of 50 MPa, an elastic modulus of 6.0 GPa, a density of 1102 kg/m3, and a thickness swelling of 24%.
Databáze: OpenAIRE
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