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2021 | OriginalPaper | Chapter

Mechanical Performance of Polylactic Acid from Sustainable Screw-Based 3D Printing

Authors : Paolo Minetola, Luca Fontana, Rossella Arrigo, Giulio Malucelli, Luca Iuliano

Published in: Sustainable Design and Manufacturing 2020

Publisher: Springer Singapore

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Abstract

Screw-extrusion-based 3D printing or fused granular fabrication (FGF) is a less widespread variant of filament-based 3D printing for polymers. An FGF printer can be fed directly from polymer granules for improved sustainability. Shorter manufacturing routes and the potential of using recycled pellets from waste plastics are key features of FGF in the circular economy framework. A modified version of a standard Prusa i3 plus printer, which was equipped with a Mahor screw extruder, is used to test the mechanical performance of polylactic acid (PLA) processed with different layer infill and printing speed. Rheological and thermal analyses are carried out to characterise the material. The energy consumption of the FGF printer was measured during the fabrication of Dumbbell specimens. Tensile test results are consistent with other investigations presented in the literature. A higher printing speed promotes FGF eco-efficiency without a detrimental effect on the material strength, whereas lower printing speed should be preferred for increased material stiffness.

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Title: Mechanical Performance of Polylactic Acid from Sustainable Screw-Based 3D Printing
Authors: Paolo Minetola
Luca Fontana
Rossella Arrigo
Giulio Malucelli
Luca Iuliano
Publisher: Springer Singapore
Book: Sustainable Design and Manufacturing 2020
Print ISBN: 978-981-15-8130-4

Electronic ISBN: 978-981-15-8131-1

Copyright Year: 2021
DOI: https://doi.org/10.1007/978-981-15-8131-1_47

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