Influence of the stabilization temperature on textural and structural features and ion release in SiO2-CaO-P2O5 sol-gel glasses

摘要: Two different SiO2−CaO−P2O5 glasses have been synthesized by the sol−gel method, and stabilization of gel was carried out at temperatures between 500 800 °C. The thermal treatments lead to changes in structural textural properties. When were soaked a buffered solution, activation energy for calcium release increased with temperature. silicon found be closely related properties network density. evolution such depended on chemical composition glasses. As an assumption, differences behavior both compositions can explained terms structure Ca/Si ratio appears play fundamental role this behavior.