Abstract In the present study, bioactive ceramics called magnesium aluminate spinal were produced by combustion synthesis method and its properties were investigated by X-ray diffraction (XRD) and scanning electron microscopy (FE-SEM) tests. Studies showed that spinel synthesis had a score between 27 and 40 nm. To take advantage of the optical properties of the spinel, it is doped with the element eurupium and the photoluminescence (PL) test is taken and it is determined that the additives are doped up to 7% by weight to improve the optical properties. Excitation was also performed at 356 nm and emmission at 592 nm. In order to increase the efficiency and active use of PLA as well as to increase the mechanical properties, this polymer is produced as a composite with magnesium aluminate spinel. PLA/MgAl2O4 polymer matrix composite fabrication methods included slurry casting and 3D printer and its biomaterial properties were studied. Magnesium aluminate spinel was added to polylactic acid at 0, 2, 4, 6 and 8%. X-ray diffraction analysis (XRD), scanning electron microscopy (FE-SEM) and compressive strength are used to eva‎luate the properties of the composite produced. XRD results showed that 8% of magnesium significantly reduced the crystallinity of polylactic acid. Magnesium aluminate spinel had the highest compressive strength at 6% by weight. Simulated body solution (SBF) is used to study the bioactive properties of this composite. The composite was placed in this solution for four weeks. Calcium and phosphorus levels in the fourth week in the sample with 8% by weight of magnesium aluminate nanoparticles in the highest amount and 77 mg/L and 40 mg/L, respectively, showed that the 3D printer method, Production by 3D printer method is more degradable than slurry casting method.

مهدي رفيعايي