Deformation mechanisms of plasticized starch materials.
Fiche publication
Date publication
décembre 2014
Journal
Carbohydrate polymers
Auteurs
Membres identifiés du Cancéropôle Est :
Pr COQUERET Xavier
Tous les auteurs :
Mikus PY, Alix S, Soulestin J, Lacrampe MF, Krawczak P, Coqueret X, Dole P
Lien Pubmed
Résumé
The aim of this paper is to understand the influence of plasticizer and plasticizer amount on the mechanical and deformation behaviors of plasticized starch. Glycerol, sorbitol and mannitol have been used as plasticizers. After extrusion of the various samples, dynamic mechanical analyses and video-controlled tensile tests have been performed. It was found that the nature of plasticizer, its amount as well as the aging of the material has an impact on the involved deformation mechanism. The variations of volume deformation could be explained by an antiplasticization effect (low plasticizer amount), a phase-separation phenomenon (excess of plasticizer) and/or by the retrogradation of starch.
Référence
Carbohydr Polym. 2014 Dec 19;114:450-7