Evaluation of the Glass Bioactivity Grade by IR Analysis and the Stevels Parameter
The structure of silica-based glasses consists on a disrupted network of SiO4 tetrahedra where network modifiers generate non-bridging oxygen groups (NBO), that play an important role at the initial steps of the bioactive process. Infrared spectroscopy is a sensitive technique to the presence of NBO groups and glass local structure modifications. The infrared study has been complemented with a theoretical approach using the Y Stevels parameter. Moreover, the in vitro bioactivity of the glasses as a function of Y Stevels paremeter has been studied, which can be a finding of a predictive tool for bioactivity of glasses.
Panjian Li, Kai Zhang and Clifford W. Colwell, Jr.
J. P. Borrajo et al., "Evaluation of the Glass Bioactivity Grade by IR Analysis and the Stevels Parameter", Key Engineering Materials, Vols. 284-286, pp. 465-468, 2005