Suitability of blends from virgin and reprocessed polylactide: performance and energy valorization kinetics
[EN] A blending strategy of virgin and reprocessed polylactide may be postulated as an alternative to reduce the material cost at industrial level, and as a valorisation route to plastic waste management of production scraps. The performance of blends prepared from virgin polylactide and polylactide...
| Autores: | , , |
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| Formato: | artículo |
| Fecha de publicación: | 2018 |
| 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:10251/147427 |
| Acesso em linha: | https://riunet.upv.es/handle/10251/147427 |
| Access Level: | acceso abierto |
| Palavra-chave: | Polylactide (PLA) Mechanical recycling Reprocessing Energetic valorisation Thermal analysis CIENCIA DE LOS MATERIALES E INGENIERIA METALURGICA MAQUINAS Y MOTORES TERMICOS |
| Resumo: | [EN] A blending strategy of virgin and reprocessed polylactide may be postulated as an alternative to reduce the material cost at industrial level, and as a valorisation route to plastic waste management of production scraps. The performance of blends prepared from virgin polylactide and polylactide mechanically reprocessed up to two cycles (PLA-V/R) was assessed in terms of thermo-oxidative stability, morphology, viscoelasticity and thermal kinetics for energetic valorisation. PLA-V/R blends showed appropriate thermo-oxidative stability. The amorphous nature of polylactide was preserved after blending. The viscoelastic properties showed an increment of the mechanical blend effectiveness, which suggested the feasibility of PLA-V/R blends to be used under similar mechanical conditions to those of virgin PLA goods. Finally, it was shown that the energetic valorisation of PLA-V/R blends would result in a more feasible process, due to the lower required activation energy, thus highlighting the advantages of the energetic demand for the process. In conclusion, PLA-V/R blends showed similar processability, service performance and valorisation routes than virgin PLA and therefore could be relevant in the sustainable circular industry of bioplastics. |
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