Development of bioplastic materials: From rapeseed oil industry by products to added-value biodegradable biocomposite materials
Rapeseed crops are mainly harvested due to its high oil content. Production of oil from rapeseed generates a significant amount of by-products like presscake or meal. The high protein content (∼35%) of these rapeseed by-products makes them an interesting plant-derived alternative for the development...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2018 |
| País: | España |
| Institución: | Universidad de Sevilla (US) |
| Repositorio: | idUS. Depósito de Investigación de la Universidad de Sevilla |
| OAI Identifier: | oai:idus.us.es:11441/172757 |
| Acceso en línea: | https://hdl.handle.net/11441/172757 https://doi.org/10.1016/j.indcrop.2018.09.013 |
| Access Level: | acceso abierto |
| Palabra clave: | Biocomposite Protein revalorisation Rapeseed Rheology Water uptake capacity (WUC) |
| Sumario: | Rapeseed crops are mainly harvested due to its high oil content. Production of oil from rapeseed generates a significant amount of by-products like presscake or meal. The high protein content (∼35%) of these rapeseed by-products makes them an interesting plant-derived alternative for the development of bioplastic materials. The generation of bioplastics from a rapeseed meal by injection moulding was studied herein at different mould temperatures (80, 100, 120 °C). Further processing of the meal (pelletizing, milling, sieving) on the bioplastics produced was also analysed using dynamic mechanical thermal analysis (DMTA), tensile tests and water uptake capacity. In all cases, strengthening of the samples occurred when moulding at high temperatures (120 °C), which might be related to thermally promoted protein cross-linking. This effect was reflected by an increase of 50% in the viscoelastic properties of the bioplastics when increasing the mould temperature from 80 to 120 °C. Biocomposites of rapeseed meal and polycaprolactone (PCL) at different PCL contents (0–20 wt. %) were also produced. The viscoelasticity of the biocomposites depended on PCL concentration. When PCL content was 20 wt.%, viscoelastic moduli (E’ and E’’) increased around 200%, which may be associated either to its role as a filler or to its integration into the protein matrix. These results indicate that rapeseed meal is a suitable alternative for the generation of bioplastic materials adding value to a by-product of the rapeseed oil industry. |
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