Details

Autor(en) / Beteiligte

• Mikus, P.-Y.
• Alix, S.
• Soulestin, J.
• Lacrampe, M.F.
• Krawczak, P.
• Coqueret, X.
• Dole, P.

Titel

Deformation mechanisms of plasticized starch materials

Ist Teil von

• Carbohydrate polymers, 2014-12, Vol.114, p.450-457

Ort / Verlag

Kidlington: Elsevier Ltd

Erscheinungsjahr

2014

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• •Mechanical behavior of plasticized starch in function of the plasticizer amount.•Mechanical behavior of plasticized starch in function of the plasticizer type.•Mechanical behavior of plasticized starch in function of the physical aging.•Plasticization quality, phase separation and retrogradation of starch. 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.