فهرست نشریات علمی دسترسی آزاد ایران

Phosphate-based glasses are suitable candidates for biomedical applications due to their porous structure. This study illustrates the properties and structural characterization of titanium-phosphate glass powders in the 55(P 2 O 5 )-25(CaO)-(20-x)(Na 2 O)-x(TiO 2 ), (x= 5, 10, 15) systems, which were prepared via sol-gel method. For this purpose, precursors of P 2 O 5 , CaO, Na 2 O, and TiO 2 were added together dropwise on the magnetic stirrer after diluting or dissolving in ethanol. After gel formation, drying was done for various time periods at 60, 120, 180 and 200 °C. The structural and thermal properties of the obtained stabilized sol-gel glass powders were characterized using X-Ray Diffraction (XRD), Fourier Transform Infrared (FT-IR) spectroscopy, Simultaneous Thermal Analysis (STA), Brunauer-Emmett-Teller surface area, porosity analyzer (BET), and Scanning Electron Microscopy (SEM). The XRD results confirmed the amorphous and glassy nature of the prepared samples. FT-IR Spectroscopy results showed that the local structure of glasses changed with increasing TiO 2 content. As TiO 2 content increased in the glass structure, the phosphate connectivity increased. It was indicated that the addition of TiO 2 correlated unequivocally with an increase in glass stability. Also, to assess specimen’s bioactivity, the samples were soaked in Simulated Body Fluid (SBF) for 7 days. The results of this study suggested that glass composition had a significant influence on apatite-forming ability, indicating the possibility to customize the properties of this class of materials towards the biomedical applications.