Abstract
IR spectroscopy was used to study the behavior of water in model glasses of the systems Na2O–B2O3–SiO2 and K2O–B2O3–SiO2. It was determined that hydroxyl groups and water in molecular form are present in such alkali borosilicate glasses obtained by quenching water-bearing melt. The water distribution between its forms and silicate and borate components of the glass structure depends on their chemical composition. Proton-cation exchange with the participation of non-bridge oxygen atoms and coordinated alkali-metal ions is involved in the process leading to the formation of hydroxyl groups.
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