Use of starch granules melting to control the properties of bio-flour filled polypropylene and poly(butylene succinate) composites: Mechanical properties

Tran Thierry, Lee Byoung-Ho, Yang Han-Seung, Chotineeranat Sunee, Sriroth Klanarong, Kim Hyun-Joong. 2011. Use of starch granules melting to control the properties of bio-flour filled polypropylene and poly(butylene succinate) composites: Mechanical properties. Starch - Stärke, 63 (10) : 637-648.

Quartile : Q2, Sujet : FOOD SCIENCE & TECHNOLOGY

Résumé : The feasibility and industrial potential of using bio-flours from tropical crop residues, in particular starch containing bio-flours, for the manufacture of bio-composites was investigated. Polypropylene (PP) and poly(butylene succinate) (PBS) were compounded with bio-flours from pineapple skin (P) and from non-destarched (CS) and destarched (C) cassava root by twin-screw extrusion. In CS composites, two levels of starch granules melting were achieved by adjusting the extrusion temperature, enabling control of morphological and mechanical properties. The use of bio-flours reduced tensile strength by 26-48% and impact strength by 14-40% when the proportion of bio-flour was increased to 40% w/w, while flexural strength initially increased upon addition of bio-flours, before decreasing at higher loads. The use of compatibilizers, in particular maleic anhydride-polypropylene (MAPP) in PP composites with 30% bio-flour resulted in tensile strength similar to non-compatibilized composites with 10% bio-flour (34-35?MPa). MAPP also increased flexural strength to higher levels than pure PP, resulting in a stronger, but less flexible material.

Mots-clés Agrovoc : produit non alimentaire, résidu de récolte, amidon, amidon industriel, polymère, polypropylène, Ananas comosus, Manihot esculenta, manioc, propriété mécanique, extrusion, propriété technologique, farine non céréalière, légume racine

Mots-clés géographiques Agrovoc : Thaïlande

Classification Agris : Q60 - Traitement des produits agricoles non alimentaires
Q70 - Traitement des déchets agricoles

Champ stratégique Cirad : Axe 3 (2005-2013) - Alimentation accessible et de qualité

Auteurs et affiliations

• Tran Thierry, CIRAD-PERSYST-UMR Qualisud (FRA) ORCID: 0000-0002-9557-3340
• Lee Byoung-Ho, Seoul National University (KOR)
• Yang Han-Seung, University of Minnesota (USA)
• Chotineeranat Sunee, Kasetsart University (THA)
• Sriroth Klanarong, Kasetsart University (THA)
• Kim Hyun-Joong, Seoul National University (KOR)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/563056/)

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