Physicochemical characterization of 20.15[(2.038 + x) SiO₂-(1.457 - x) Na₂O]-2.6P₂O₅-26.915CaO-0.035SrO system oxide glasses

In the present work, glasses of molar composition 20.15[(2.038 + x)SiO₂-(1.457 - x)Na₂O]-2.6P₂O₅-26.915CaO- 0.035SrO were studied in order to assess the influence of the addition of SrO on the physicochemical properties for a better control of their rigidities in therapeutic strategies of bone regeneration. Samples were synthesized by fusion at high temperature and subsequently characterized by X-ray diffraction (XRD), pycnometry and differential scanning calorimetry (DSC). The results indicate that the samples are amorphous. The values of the vitreous transition temperature and density are of the order of magnitude of those of the reference system 20.15 [(2.038+x) SiO₂-(1.457-x) Na₂O]-2.6P₂Os-26.95CaO. Therefore, it appears that the addition of 0.035 % molar of SrO in the base glass does not induce a significant change in the physicochemical and structural properties of the glass.