• Ouammou, Abdelkrim
• Bali, Brahim El
• Herradi, Smaiel
• Khaldi, Mohamed
• Adouar, Imane
• Lachkar, Mohammed
• Chajri, Sanae
• Bouhazma, Sara

Abstract

<jats:p>Bioactive powders of the binary SiO2-CaO, ternary SiO2-CaO-P2O5 and quaternary systems SiO2-CaO-P2O5-Na2O/Mg2O were synthesized using a sol-gel route. The gels were converted into bioglasses powders by heat treatments at the temperature of 700°C. The resulting materials were characterized by X-ray diffraction (XRD), Fourier Transform Infrared spectroscopy (FTIR), Environmental Scanning Electron Microscopy (ESEM) and in vitro bioactivity in acellular Simulated Body Fluid (SBF). The in vitro tests showed that the samples had good apatite-forming ability. Glasses doped with sodium and magnesium show good results in terms of bioactivity and mechanical properties. The results showed that the quaternary glass SiO2-CaO-P2O5-Na2O containing Na is the most bioactive, only 6 hours after its immersion in SBF; a layer of hydroxycarbonated apatite (HAC) was deposited on the glass and compressive strength of up to 233.08 MPa with a porosity of 11.02%, due to the presence of the Na2Ca2Si3O9 phase. Magnesium also affects bioactivity because it has improved from binary to ternary to quaternary doped with magnesium, bioactive from 12h of contact with the SBF.</jats:p>

Topics

• impedance spectroscopy
• phase
• x-ray diffraction
• Magnesium
• Magnesium
• glass
• glass
• strength
• Sodium
• forming
• porosity
• Fourier transform infrared spectroscopy
• environmental scanning electron microscopy
• bioactivity