Processing and properties of sorghum stem fragment-polyethylene composites

Vo Loan T.T., Girones Jordi, Beloli Calypso, Chupin Lucie, Di Giuseppe Erika, Clément-Vidal Anne, Soutiras Armelle, Pot David, Bastianelli Denis, Bonnal Laurent, Navard Patrick. 2017. Processing and properties of sorghum stem fragment-polyethylene composites. Industrial Crops and Products, 107 : 386-398.

https://doi.org/10.1016/j.indcrop.2017.05.047

Article de revue ; Article de recherche ; Article de revue à facteur d'impact

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Vo et al. processing and properties of sorghum stem fragemnts polyethylene composites. Ind Crop Prod.2017.pdf
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Quartile : Q1, Sujet : AGRONOMY / Quartile : Q1, Sujet : AGRICULTURAL ENGINEERING

Résumé : Composites prepared with whole sorghum stem fragments reinforcing a polyethylene matrix were studied using ten different sorghum genotypes. Using a robust processing protocol, it is shown that for a given sorghum genotype, the composition of the stem fragments varies depending on the size of the sieved fragments but with the genotype effect being larger than the sieving effect. There is a variation of mechanical properties between the genotypes (from 0.6 to 1 GPa for modulus, from 7.2 to 11.5 MPa for tensile strength and from 4.4 to 6.2 kJ/m2 for impact strength). The genotypes giving the best tensile mechanical properties are the ones which have the highest viscosity, which show during blending the largest energy dissipation and which have the less decrease of size after processing. There is a weak correlation between tensile mechanical properties and resistance to impact suggesting that it is not the same tissues or physical properties which contribute to these two tests.

Mots-clés Agrovoc : sorgho en grain, Sorghum bicolor, tige, génotype, propriété mécanique, biocomposite, polyéthylène, propriété physicochimique, traitement, moulage par injection

Mots-clés géographiques Agrovoc : France

Classification Agris : Q60 - Traitement des produits agricoles non alimentaires
F30 - Génétique et amélioration des plantes
F60 - Physiologie et biochimie végétale

Champ stratégique Cirad : Axe 2 (2014-2018) - Valorisation de la biomasse

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