pH measurement of SBF revealed a decrease in pH values during immersing bioactive glass coating in the SBF, particularly during the first days immersion?
You may want to check: C. M. Queiroz, S. Agathopoulos, J. R. Frade, M. H. V. Fernandes, "Network connectivity and bio-mineralization of 0.45SiO2-(0.45-x)MgO-xK2O-0.1(3CaO⋅P2O5) glasses", Materials Science Forum, Vols. 455-456, 2004, 383-387.
Article Network connectivity and bio-mineralization of 0.45SiO2-(0....