Production and characterization of PLA/MgAl2O4 scaffolds by 3D printing method (FDM) and their comparison with slurry method

Document Type : Original Articles

Authors

Mehran Ghodrati ¹

Seyed Mahdi Rafiaei ²

¹ Materials Engineering Group, Golpayegan College of Engineering, Isfahan University of Technology, Golpayegan , Iran.

² . Associate Professor, Materials Engineering Group, Golpayegan College of Engineering, Isfahan University of Technology, Golpayegan , Iran. y

10.22067/jmme.2024.86653.1142

Abstract

In the present study, magnesium aluminate bio-ceramic (MgAl2O4) with particle size of 27 to 40 nm was produced by combustion synthesis method. Also, PLA/MgAl2O4 polymer matrix composites were made using FDM and slurry welding methods and their properties were studied and compared. X-ray diffraction (XRD), scanning electron microscope (FE-SEM), infrared spectrometer (FT-IR) and inductively coupled plasma spectroscopy (ICP) were used to investigate the properties of the produced composites. XRD results showed that in the composite samples synthesized by FDM method, PLA has more crystallinity than the slurry method, which is caused by relatively slow cooling of the polymer melt. To investigate the bioactive properties of this composite, the simulated body solution (SBF) was used and the results of the ICP test showed that the amount of calcium and phosphorus in the fourth week in the PLA/MgAl2O4 printed sample was the highest and equal to 77 mg/L and respectively were 40 mg/L. These results show that the processing of these composites by the 3D printing method brings more degradability than the slurry method and has a higher quality for biological uses.

Keywords

Magnesium Aluminate Spinel

Combustion Synthesis

Polymer Matrix Scaffold

FDM

slurry

Subjects

• Biomaterials

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