Multinuclear magnetic resonance studies of borosilicate glasses for use in glass ionomer cements: incorporation of CaO and Al2O3
Abstract
Calcium and aluminium incorporation into a sodium borosilicate glass with base composition 0.30Na2O ∶ 0.46SiO2
∶ 0.24B2O3 was investigated. Glasses of general compositions (0.30 −
x/3.3)Na2O ∶
xCaO ∶ (0.46 −
x/2.2)SiO2
∶ (0.24 −
x/4.2)B2O3 (Cx) and (0.3 −
x/3.3)Na2O ∶
xAl2O3
∶ (0.46 −
x/2.2)SiO2
∶ (0.24 −
x/4.2)B2O3 (Ax) were prepared by melt quenching. All the samples were tested for glass-