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Analysis of the influence of polylactic acid (PLA) colour on FDM 3D printing temperature and part finishing

Juliana Breda Soares (PGDesign UFRGS, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil)
João Finamor (Laboratório de Design e Seleção de Materiais – LdSM, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil)
Fabio Pinto Silva (Laboratório de Design e Seleção de Materiais – LdSM, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil)
Liane Roldo (Department of Materials – Engineering School, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil)
Luis Henrique Cândido (Escola de Engenharia, Departamento de Materiais, Universidade Federal do Rio Grande do Sul, Gravatai, Brazil)

Rapid Prototyping Journal

ISSN: 1355-2546

Article publication date: 16 October 2018

Issue publication date: 14 November 2018

969

Abstract

Purpose

This paper aims to analyse the effect of different polylactic acid (PLA) colours used on fused deposition modelling (FDM), considering the product finishing quality produced with the same process conditions.

Design/methodology/approach

The methodology adopted was to design a virtual modelling object and three-dimensional (3D) print it with FDM with different PLA colours (natural, green and black), using the same parameters. 3D scanning and scanning electron microscopy was used to analyse the model finishing of each sample. Fourier-transform infrared spectroscopy analysis, thermogravimetric analysis and dynamic mechanical analysis were used to characterize the material and verify if the colour affected its thermal behaviour.

Findings

Findings showed that different PLA colours lead to distinct 3D printed finishings under the same process conditions. Thermal analysis showed a reason for the printing finishing difference. The degradation temperatures and the glass temperatures vary depending on the PLA colour. This affects the FDM working temperature.

Originality/value

This study will contribute to improving the finishing quality of 3D printed products by collaborating to the determination of its process conditions.

Keywords

Acknowledgements

The authors gratefully acknowledge the financial support from the Brazilian Research Agencies Conselho Nacional de Desenvolvimento Tecnológico and Coordenação de Aperfeiçoamento de Pessoal de Nível Superior.

Citation

Soares, J.B., Finamor, J., Silva, F.P., Roldo, L. and Cândido, L.H. (2018), "Analysis of the influence of polylactic acid (PLA) colour on FDM 3D printing temperature and part finishing", Rapid Prototyping Journal, Vol. 24 No. 8, pp. 1305-1316. https://doi.org/10.1108/RPJ-09-2017-0177

Publisher

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Emerald Publishing Limited

Copyright © 2018, Emerald Publishing Limited

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