masterThesis
Mejoramiento de la procesabilidad del PET reciclado : evaluación de mezclas poliméricas para mitigar degradación y mejorar estabilidad en la extrusión de filamento de impresión 3D con PET posconsumo
Fecha
2021Registro en:
668.9 L431
Autor
Lazo Lobo, José Roberto
Institución
Resumen
A filament for 3D printing FDM (Fused Deposition Modeling) of recycled PET bottles and PETG was developed via melt blending in a low production filament extruder with the purpose of improving the processability of PET and expanding the recycling possibilities of both materials. As PETG is a commercial material used in FDM, the effect of this polymer in the mixture with PET was evaluated in terms of the diameter stability of the filament and the tensile properties in filament not yet printed. The choice of PETG was the result of a first stage of qualitative quality analysis, in which it was evaluated how other materials affected the stability of the process; An improvement in this was obtained by counteracting the degradation of PET during processing, and the mixture with PETG resulted in a regular morphology that indicates a certain degree of miscibility between the two polymers, in addition the results of maximum stress and elongation slightly improved the PETG
This study explores alternatives to non-centralized, small and medium-scale recycling sites, thus reducing logistical expenses in the management of plastic waste by making use of the circular economy model