AMBIENTUM BIOETHICA BIOLOGIA CHEMIA DIGITALIA DRAMATICA EDUCATIO ARTIS GYMNAST. ENGINEERING EPHEMERIDES EUROPAEA GEOGRAPHIA GEOLOGIA HISTORIA HISTORIA ARTIUM INFORMATICA IURISPRUDENTIA MATHEMATICA MUSICA NEGOTIA OECONOMICA PHILOLOGIA PHILOSOPHIA PHYSICA POLITICA PSYCHOLOGIA-PAEDAGOGIA SOCIOLOGIA THEOLOGIA CATHOLICA THEOLOGIA CATHOLICA LATIN THEOLOGIA GR.-CATH. VARAD THEOLOGIA ORTHODOXA THEOLOGIA REF. TRANSYLVAN
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STUDIA CHEMIA - Issue no. 3 / 2011 | |||||||
Article: |
SYNTHESIS AND CHARACTERIZATION OF STRONTIUM CONTAINING PHOSPHOSILICATE BIOGLASSES. Authors: ROZALIA VERES, CONSTANTIN CIUCE, VIORICA SIMON. |
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Abstract: The structural properties of strontium containing silicophosphate glasses synthesized by sol-gel process were studied and compared with those of the strontium-free material. The samples were characterized by differential thermal analysis (DTA), X-ray diffraction (XRD), Fourier transform infrared spectroscopy, and BET surface area analysis. Based on the DTA results, the 100 ºC dried gels were subjected to heat treatments at 300 ºC and 650 °C. X-ray diffractograms show a predominant amorphous character for all samples, even after the thermal treatments. The FT-IR analysis indicates weak changes in the local structure of Sr-free samples induced by progressive addition of SrO addition, as well as by increasing treatment temperature. The BET data reveal that the glasses are mesoporous. Keywords: silicophosphate bioglasses; sol-gel; strontium; mesoporosity. |
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