The split network analysis for exploring composition-structure correlations in multi-component glasses: I. Rationalizing bioactivity-composition trends of bioglasses

作者：Eden Mattias^*

来源：Journal of Non-Crystalline Solids, 2011, 357(6-7): 1595-1602.

DOI：10.1016/j.jnoncrysol.2010.11.098

• Glass structure
• Network polymerization
• Network connectivity
• BO/NBO distributions
• Silicate
• Na(2)O-CaO-SiO(2)-P(2)O(5) system
• Bioactive glass
• Composition-structure-bioactivity correlations

We present a strategy, referred to as "split network" analysis, for assessing the average network polymerization (r(F)) and mean number of bridging oxygen (BO) atoms ( (N) over bar (F)(BO)) for each individual network former F in multi-component oxide-based glasses, primarily targeting those involving Al, B, P and Si. This requires a priori knowledge about the parameters (r(F), (N) over bar (F)(BO)) of all network builders, but one, whose values are deduced by the split network procedure. We illustrate split-network concepts for establishing composition/structure/bioactivity correlations in Na-Ca-Si-P-O glasses. The cooperating influences on the bioactivity from the average polymerization degree of the silicate network and the amounts of orthophosphate and sodium ions are discussed.

• 出版日期2011-4