Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Mechanical, Thermal, and Chemical Properties of PLA-Mg Filaments Produced via Colloidal Route for Fused Filament Fabrication

José Ygnacio Pastor
* ORCID logo ,
Jaime Orellana-Barrasa
ORCID logo ,
Ana Ferrández-Montero
ORCID logo ,
Begoña Ferrari
ORCID logo ,
Aldo R. Boccaccini
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Version 1 : Received: 31 August 2022 / Approved: 5 September 2022 / Online: 5 September 2022 (12:53:24 CEST)

A peer-reviewed article of this Preprint also exists.

Orellana-Barrasa, J.; Ferrández-Montero, A.; Boccaccini, A.R.; Ferrari, B.; Pastor, J.Y. The Mechanical, Thermal, and Chemical Properties of PLA-Mg Filaments Produced via a Colloidal Route for Fused-Filament Fabrication. Polymers 2022, 14, 5414. Orellana-Barrasa, J.; Ferrández-Montero, A.; Boccaccini, A.R.; Ferrari, B.; Pastor, J.Y. The Mechanical, Thermal, and Chemical Properties of PLA-Mg Filaments Produced via a Colloidal Route for Fused-Filament Fabrication. Polymers 2022, 14, 5414.

Abstract

The effect of Mg particles on PLA's thermal, chemical, physical, and mechanical properties has been studied. The thermal and physical properties have been studied by differential scanning calorimetry, analysing the stability of the α and α’-crystals of the PLA. A colloidal route was used to introduce Mg particles inside the PLA matrix, ensuring a good dispersion of the particles. Materials with Mg contents from 0 to 10 wt.% have been prepared, with additions of polyethyleneimine (PEI) and polyethylene glycol (PEG). Fourier Transform Infrared Spectroscopy has been used to confirm the influence of Mg, PEI, and PEG on PLA properties. The mechanical properties have been measured with a universal tensile test machine on printed filaments via Fused Filament Fabrication (FFF), which were naturally aged to stable conditions. Filaments with and without a notch were studied to obtain the materials' tensile strength, elastic modulus, and fracture toughness. Different analytical models to explain the results of the PLA-Mg were studied, in which the interface strength of the PLA-Mg composites was calculated.

Keywords

PLA-Mg; FTIR; DSC; crystallinity; tensile test

Subject

Chemistry and Materials Science, Polymers and Plastics

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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