Characterization of Bioactive Glass Synthesized by Sol-Gel Process in Hot Water
Đặng Tấn Hiệp, Thi Hoa Bui, Е. В. Гусева, Ta Anh Tuan, Anh Tien Nguyen, Thi Trong Hoa Hoang, Bùi Xuân Vương
Abstract
Bioactive glass 70SiO2-30CaO (mol.%) was successfully synthesized by modified sol–gel in hot water without using an acid catalyst. TG-DSC analysis showed that the amorphous glass could be synthesized by sintering the sample at 700 °C for three hours. The N2 adsorption/desorption and TEM investigations highlighted that the synthetic glass had a mesoporous structure, consisting of spherical particles with sizes in the range of 11–20 nm. The specific surface area, pore volume, and average pore diameter of synthetic glass were 150.13 m2/g, 0.37 cm3/g, and 11.84 nm, respectively. Moreover, synthetic bioactive glass presented interesting bioactivity and good biocompatibility after in vitro experiments in simulated body fluid (SBF) and in cellular medium.