Technical Evaluation of Mechanical Recycling of PLA 3D Printing Wastes

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Moreno Escribano, Eduardo and Beltrán González, Freddys and Arrieta Dillon, Marina Patricia and Gaspar Roa, Gerald Manuel and Martínez Muneta, Mª Luisa and Carrasco Gallego, Ruth and Yáñez Gutiérrez, Susana and Hidalgo Carvajal, Raúl and Orden Hernández, María Ulagares de la and Martínez Urreaga, Joaquín (2020) Technical Evaluation of Mechanical Recycling of PLA 3D Printing Wastes. Proceedings, 69 (19). 6 p.. ISSN 2504-3900

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Official URL: https://doi.org/10.3390/CGPM2020-07187




Abstract

The importance of 3D printing is growing rapidly. A recent example of this increasing importance involves the fight against the Covid-19 pandemic, in which 3D printing has helped to overcome the shortage of critical supplies. However, 3D printing generates large amounts of plastic waste that could pose an environmental problem, thus making it necessary to find methods for the correct management of such wastes. The combination of additive manufacturing and distributed mechanical recycling can contribute to the development of a more circular economy. The main goals of this work were to characterize the poly(lactic acid) (PLA) wastes generated in 3D printing processes and evaluate the effect of their heterogeneity on the technical feasibility of mechanical recycling. Two PLA 3D printing wastes were used: waste coming from a well-known PLA grade, and a mixture of PLA 3D printing residues coming from an association of coronamakers in Madrid. Recycled material obtained from the waste of a well-known PLA grade shows good properties, similar to those for non-used material. However, the recycled material obtained from mixed PLA waste shows lower viscosity values, higher crystallization ability and less transparency. These results highlight that special attention should be paid to the sorting and characterization of the 3D wastes, to obtain recycled materials with good properties.


Item Type:Article
Additional Information:

This article belongs to the Proceedings of The First International Conference on “Green” Polymer Materials 2020.

Uncontrolled Keywords:poly(lactic acid); 3D printing; mechanical recycling; plastic waste; circular economy
Subjects:Sciences > Chemistry > Plastics industry
Sciences > Chemistry > Environmental conditions
Sciences > Chemistry > Chemistry, Organic
Medical sciences > Biology > Biotechnology
ID Code:65370
Deposited On:07 May 2021 19:05
Last Modified:10 May 2021 06:52

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