Structural interpretation of concentration dependences of the molar volume of the glass in R2O - SiO2 и RO - SiO2 systems

A method for the structural interpretation of the concentration dependences of the properties of two-component silicate glasses (by the example of their molar volume) is considered, based on the establishment of a correlation between the values ??of a certain property and the degree of depolymerization of the silicon-oxygen framework (structural network) of the glass R, which reflects the number of non-bridging oxygen per one silicon-oxygen tetrahedron. ... The partial values ??of the molar volume of a number of oxides of the first and second groups of the periodic system, which retain their constant values ??in the entire region of glass formation, have been determined. The error in calculating the molar volume of glasses by the proposed method is ~ 1%. Tab. 2, ill. 3, bibliography: 15 titles.