Abstract
This paper studies the in vitro behavior of borophosphate glasses, which are considered potential biomedical materials. To this end, five glass compositions in the system 30Na2O-20CaO-xB2O3-(20-x)TiO2-30P2O5 with 0 ≤ x ≤ 20 have been elaborated by the conventional melt-quenching technic. As expected, replacing TiO2 by B2O3 in the phosphate glasses decreased remarkably the glass transition, crystallization and melting temperatures (Tg, Tc and Tm). The density (ρ) decreased, while VM increased with increasing B2O3 suggesting the reduce in strength of the glasses. Infrared spectroscopy revealed that the glassy network contained PO3, PO4, BO3 and BO4 units with P-O-L (L = P, Ti and B), Ti-O and B-O-B linkages. Moreover, in vitro bioactive behavior was investigated using SBF solution for the glass composition × = 15 mol %, XRD and Infrared spectroscopy were used to characterize the changes that occurred in glasses surface.
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