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Preparation, Properties, Protein Cross-Linking and Biodegradability of Plasticizer-Solvent Free Hemp Fibre Reinforced Wheat Gluten, Glutenin, and Gliadin Composites
- Source :
- BioResources, Vol 9, Iss 3, Pp 5246-5261 (2014)
- Publication Year :
- 2014
- Publisher :
- North Carolina State University, 2014.
-
Abstract
- The present study is aimed at evaluating the use of plant-based polymers and fibres for the production of sustainable biocomposites. For the first time, plasticiser/solvent-free hemp fibre-reinforced wheat gluten and hemp-gliadin and glutenin composites were obtained by compression moulding at different temperatures. The plasticiser/solvent-free sample preparation method developed in this study facilitated the use of a powdered protein matrix with a mat of randomly oriented hemp fibres. The tensile and protein cross-linking properties, as well as the biodegradability, were investigated. The addition of hemp fibre to the protein matrix increased the E-modulus by 20 to 60% at 130 °C. An increase in moulding temperature from 110 to 130 °C resulted in an increase in maximum stress due to the formation of intermolecular bonds between protein chains. The gliadin composites had higher E-modulus and maximum stress and showed a larger increase in protein polymerisation with increased temperature compared to the glutenin composites. A comparison of tensile properties revealed that the composites were stiffer and stronger compared to several similarly produced biobased composites. The composites were found to be fully biodegradable under a simulated soil environment after 180 days. Biocomposites produced in the present study were found to be environmentally friendly with fairly good mechanical properties.
Details
- Language :
- English
- ISSN :
- 19302126
- Volume :
- 9
- Issue :
- 3
- Database :
- Directory of Open Access Journals
- Journal :
- BioResources
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.9db4bae7ce694345b88e4baf75337423
- Document Type :
- article
- Full Text :
- https://doi.org/10.15376/biores.9.3.5246-5261