Processing and Application of Ceramics 2014 Volume 8, Issue 3, Pages: 167-177
https://doi.org/10.2298/PAC1403167M
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In vitro bioactivity of soda lime borate glasses with substituted SrO in sodium phosphate solution
Marzouk Mohamed A. (Glass Research Department, National Research Center, Dokki, Cairo, Egypt)
El Batal Hatem A. (Glass Research Department, National Research Center, Dokki, Cairo, Egypt)
Borate glasses with the basic composition 0.6B2O3•0.2Na2O•0.2CaO and SrO
progressively substituting CaO were prepared and characterized for their
bone-bonding ability. The obtained glasses were thermally treated and
converted to their glass-ceramic derivatives. In this study, FTIR spectral
analyses were done for the prepared glasses and glass-ceramics before and
after immersion in a sodium phosphate solution for extended times. The
appearance of two IR bands within the spectral range 550-680 cm-1 after
immersion confirms the formation of hydroxyapatite. X-ray diffraction studies
and scanning electron microscope analysis supported the obtained infrared
spectroscopy results. The solubility test (measurements of the weight loss in
aqueous sodium phosphate solution) was conducted for measuring the
dissolution of both glassy and crystalline derivatives to find out the role
of SrO. The corrosion behaviour of the glasses and glass-ceramics indicate
the increase of weight loss with the increase of SrO content. Different
suggested proposals were introduced to explain this abnormal behaviour.
Keywords: borate glass, SrO, bioactivity, phosphate solution, structural characterization