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Industrial vegetable oil by-products increase the ductility of polylactide

Article dans une revue avec comité de lecture
Author
RUELLAN, Alexandre
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
135725 Génie industriel alimentaire [GENIAL]
GUINAULT, Alain
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
SOLLOGOUB, Cyrille
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
CHOLLET, Guillaume
93080 ITERG
AIT-MADA, Aziza
DUCRUET, Violette
135725 Génie industriel alimentaire [GENIAL]
135726 Ingénierie Procédés Aliments [GENIAL]
DOMENEK, Sandra
135725 Génie industriel alimentaire [GENIAL]

URI
http://hdl.handle.net/10985/10359
DOI
10.3144/expresspolymlett.2015.98
Date
2015
Journal
Express Polymer Letters

Abstract

The use of industrial by-products of the vegetable oil industry as ductility increasing additives of polylactide (PLA) was investigated. Vegetable oil deodorization condensates were melt-blended by twin-screw extrusion up to a max- imum inclusion quantity of 20 wt% without preliminary purification. Sample films were obtained by single screw cast extrusion. Compounded PLA films featured largely improved ductility in tensile testing with an elongation at break up to 180%. The glass transition temperature remained higher than room temperature. The native mixture of molecules, which composed the deodorization condensates, had superior performance compared to a synthetic mixture of main compounds. The investigation of the correlation between composition of the additives and the ductility of the PLA blends by Principal Component Analysis showed synergy in property improvement between fatty acids having a melting point below and beyond the room temperature. Furthermore, a compatibilizing effect of molecules present in the native mixture was evi- denced. Oil deodorization condensates, which are a price competitive by-product of the vegetable oil industry, are therefore a very promising biobased and biodegradable additive for improving the ductility of PLA.

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