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

Orellana-Barrasa J, Ferrandez-Montero A, Boccaccini AR, Ferrari B, Ygnacio Pastor J (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Polymers MDPI

Book Volume: 14

Journal Issue: 24

DOI: 10.3390/polym14245414

Abstract

The effect of Mg particles on the thermal, chemical, physical, and primarily mechanical properties of 3D-printed PLA/Mg composites is studied in this paper. Recently, new colloidal processing has been proposed to introduce Mg particles into the PLA matrix, which ensures good dispersion of the particles and better thermal properties, allowing for thermal processing routes such as extrusion or 3D printing via fused-filament fabrication. The thermal and physical properties are here studied in 1D single-filament-printed PLA/Mg composites with 0 to 10 wt.% of Mg particles by Differential Scanning Calorimetry (DSC); we analyse the PLA chain modifications produced, the crystallinity fraction, and the different crystalline forms of the PLA after thermal processing. Fourier Transform Infrared Spectroscopy (FTIR) is used to confirm the influence of the PLA/Mg colloidal processing after printing. The mechanical properties are measured with a universal tensile test machine on the 1D single-printed filaments via fused-filament fabrication (FFF); the filaments were naturally aged to stable conditions. Filaments with and without a notch are 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 minimum values for the interface strength of the PLA-Mg composites were calculated.

Authors with CRIS profile

Aldo Boccaccini Lehrstuhl für Werkstoffwissenschaften (Biomaterialien)

Involved external institutions

Universidad Politécnica de Madrid (UPM) ES Spain (ES) Institute of Ceramics and Glass (ICV) / Instituto de Cerámica y Vidrio ES Spain (ES)

How to cite

APA:

Orellana-Barrasa, J., Ferrandez-Montero, A., Boccaccini, A.R., Ferrari, B., & Ygnacio Pastor, J. (2022). The Mechanical, Thermal, and Chemical Properties of PLA-Mg Filaments Produced via a Colloidal Route for Fused-Filament Fabrication. Polymers, 14(24). https://dx.doi.org/10.3390/polym14245414

MLA:

Orellana-Barrasa, Jaime, et al. "The Mechanical, Thermal, and Chemical Properties of PLA-Mg Filaments Produced via a Colloidal Route for Fused-Filament Fabrication." Polymers 14.24 (2022).

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