کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1517692 | 1511594 | 2009 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Compositional dependence of in-vitro bioactivity in sodium calcium borate glasses Compositional dependence of in-vitro bioactivity in sodium calcium borate glasses](/preview/png/1517692.png)
Borate glasses with composition xCaO (100−x) B2O3 (20≤x≤50), where x is in mole percent) and 50CaO·45B2O3·5Na2O have been prepared using conventional melt quench technique. Samples were submerged in simulating body fluid solution (SBF) at 37 °C for various periods of time. After storage the samples were analyzed in order to investigate if a surface layer of hydroxyl carbonate apatite layer (HCA layer/Ca–P layer) had formed. The analysis technique used included Fourier-Transform Infrared Spectroscopy (FTIR). The rate of HCA layer formation on the surface of exposed glass samples is determined by FTIR, percentage weight loss measurements of glass samples in SBF and variation of pH of SBF as a function of time. Increase in calcium content in the glass matrix has shown to decrease the rate of HCA formation on glass surfaces. The borate glass with x=20 has shown HCA layer formation on glass surface within two days of dipping. The bone like apatite formation of glass surface demonstrates the potential of glass for integration with bone.
Journal: Journal of Physics and Chemistry of Solids - Volume 70, Issue 8, August 2009, Pages 1137–1141