Effect of the ratio R = [Na2O]/[B2O3] on the structure of glass in the Na2O-B2O3-SiO2 system

Sodium borosilicate glass, with the ratio R = [Na₂O]/[B₂O₃] varied from 0.31 to 1, were studied by IR spectroscopy and Raman scattering techniques. The dependence of the structure of borosilicate glasses on their composition was studied also for the section with a constant value R = 1. The main borate and silicate groups in the system, and especially changes in the structure of glasses depending on the ratio R were identified.