Thermosetting of wheat protein based bioplastics : modeling of mechanism and material properties - Archive ouverte HAL Access content directly
Conference Poster Year : 2003

Thermosetting of wheat protein based bioplastics : modeling of mechanism and material properties

(1) , (1) , (2, 1) , (1)
1
2

Abstract

Structural investigation of gluten-glycerol blends subjected to heat-treatment was carried out by size-exclusion high performance liquid chromatography (SEC) and stress-strain tests. SEC is a valuable tool to investigate the size distribution of gluten protein chains, while the molecular weight between network junctions (M-e) can be estimated from the elastic plateau modulus. Wheat gluten aggregation upon thermosetting seems to proceed through direct covalent cross-linking between glutenin oligomers and the gluten macropolymer. The time course of the reaction, which showed a slow-down of the reaction rate with time, was described by a simple mechanistic model. The deceleration of the reaction rate was presumably due to the development of a three-dimensional protein network, which decreased the accessibility of reactive groups. The network formation could be evidenced separately by the decrease of M-e during the heat-treatment.
Fichier principal
Vignette du fichier
domenek2003MS.pdf (1.04 Mo) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

hal-02763439 , version 1 (21-12-2022)

Identifiers

Cite

Sandra Domenek, Marie Helene M. H. Morel, Andreas Redl, Stephane Guilbert. Thermosetting of wheat protein based bioplastics : modeling of mechanism and material properties. 7. World Conference on Biodegradable Polymer and Plastics, Jun 2002, Pisa, Italy. Verlag Wiley-Blackwell, Macromolecular Symposia, 197, 2003, ⟨10.1002/masy.200350717⟩. ⟨hal-02763439⟩
0 View
0 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More