Casting and extrusion processes to produce bio-based plastics using cassava starch modified by the dry heat treatment (DHT)
[EN] Although the number of studies focused on bio-based plastics is constantly rising, an important challenge to overcome is migrating from casting to extrusion, an industrially scalable method of production. In this work, we studied starch modification by dry heating treatment (DHT) and the produc...
| Autores: | , , , |
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| Formato: | artículo |
| Fecha de publicación: | 2022 |
| País: | España |
| Recursos: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglés |
| OAI Identifier: | oai:riunet.upv.es:10251/232158 |
| Acesso em linha: | https://riunet.upv.es/handle/10251/232158 |
| Access Level: | acceso abierto |
| Palavra-chave: | Films Sheets Biodegradable composites Biodegradable plastics Biobased plastics |
| Resumo: | [EN] Although the number of studies focused on bio-based plastics is constantly rising, an important challenge to overcome is migrating from casting to extrusion, an industrially scalable method of production. In this work, we studied starch modification by dry heating treatment (DHT) and the production of cassava starch films or sheets, by casting or extrusion processes, respectively. The molecular changes promoted by the DHT process resulted in a new matrix. Furthermore, the slower drying in casting, and the faster drying in extrusion, promoted different molecular arrangements, which affected the material performance. The main results showed that DHT for 4 h in cassava starch produced bio-based plastics with increased mechanical properties and opacity while decreasing water permeability, moisture content and light transmittance. In conclusion, DHT showed to be an interesting alternative to produce biodegradable plastics with potential use in different industries. |
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