Rheological and thermal characteristics of wheat gluten biopolymers plasticized with glycerol

The objective this work was to obtain bioplastics from mixtures of wheat gluten and glycerol by two different processes and evaluate their respective rheological properties. The mixtures and their respective bioplastics were obtained through direct batch mixing under approximately adiabatic and isot...

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Bibliographic Details
Published inQuímica Nova Vol. 35; no. 4; pp. 719 - 722
Main Authors Ferreira, Shana Pires, Ruiz, Walter Augusto, Gaspar-Cunha, António
Format Journal Article
LanguageEnglish
Published Sociedade Brasileira de Química 2012
Subjects
bioplastics
glycerol
wheat gluten
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Summary:The objective this work was to obtain bioplastics from mixtures of wheat gluten and glycerol by two different processes and evaluate their respective rheological properties. The mixtures and their respective bioplastics were obtained through direct batch mixing under approximately adiabatic and isothermal conditions. The bioplastics showed high values for the storage (G') and loss (G") moduli, suggesting a stronger protein network formed in both processes. The temperature onset and the percentage of weight loss to be estimated were found to be near in both bioplastics. The bioplastics have demonstrated to be materials of interesting potential of use as biodegradable barrier materials.
ISSN:0100-4042
1678-7064
DOI:10.1590/S0100-40422012000400012