Johansson, Eva
- Department of Plant Breeding, Swedish University of Agricultural Sciences
Research article2019Peer reviewed
Das, Oisik; Hedenqvist, Mikael S.; Johansson, Eva; Olsson, Richard T.; Loho, Thomas Aditya; Capezza, Antonio J.; Raman, R. K. Singh; Holder, Shima
Three different charcoals (gluten char, pine bark char and carbon black) were used to rectify certain property disadvantages of wheat gluten plastic. Pyrolysis process of gluten was investigated by analysing the compounds released at different stages. Nanoindentation tests revealed that the gluten char had the highest hardness (ca. 0.5 GPa) and modulus (7.8 GPa) followed by pine bark char and carbon black. The addition of chars to gluten enhanced the indenter-modulus significantly. Among all the charcoals, gluten char was found to impart the best mechanical and water resistant properties. The addition of only 6 wt% gluten char to the protein caused a substantial reduction in water uptake (by 38%) and increase of indenter-modulus (by 1525%). It was shown that it is possible to obtain protein biocomposites where both the filler and the matrix are naturally sourced from the same material, in this case, yielding an all-gluten derived biocomposite.
Biocomposite; Polymer-matrix composites (PMCs); Hardness (Nominated) Biochar
Composites Part A: Applied Science and Manufacturing
2019, Volume: 120, pages: 42-48
Polymer Technologies
DOI: https://doi.org/10.1016/j.compositesa.2019.02.015
https://res.slu.se/id/publ/99182