Solid state NMR spectroscopy has been very useful in determining the structure of amorphous solids.<unk> es have been studied by 29Si and 31P solid state MAS NMR spectroscopy. The chemical shift from MAS NMR is indicative of the type of chemical species present in the<unk> . The 29Si MAS NMR spectroscopy showed that Bioglass 45S5 was a Q2 type-structure with a small amount of Q3 ; i.e., silicate chains with a few crosslinks. The 31P MAS NMR revealed predominately Q0 species; i.e., PO43−; subsequent MAS NMR spectroscopy measurements have shown that Si-O-P bonds are below detectable levels
Bioactive glass
Glasses
Bioceramic
Medicinal clay
Perfluorinated compound
Polychlorinated naphthalene
Corrosive substance
Denatured alcohol