Baranowska Agata, Leśniak Magdalena, Kochanowicz Marcin, Żmojda Jacek, Miluski Piotr, Dorosz Dominik
Department of Power Engineering, Photonics and Lighting Technology, Bialystok University of Technology 45D Wiejska Street, 15-351 Bialystok, Poland.
Faculty of Materials Science and Ceramics, AGH University of Science and Technology, 30 Mickiewicza, Poland.
Materials (Basel). 2020 Mar 12;13(6):1281. doi: 10.3390/ma13061281.
An investigation of the crystallization kinetics of 45S5 Bioglass using differential scanning calorimetry is presented in this paper. Thermal analysis was performed using the Friedman method. The activation energy and the Avrami index were calculated. The glass samples were subjected to additional controlled heat treatment at 620 °C in order to obtain bioactive glass-ceramics with enhanced mechanical properties. X-ray powder diffraction (XRD) measurements indicated the formation of the glass-ceramic structures of three cyclosilicates: NaCa(SiO) or NaCa(SiO) or NaCa(SiO). Based on middle infrared region (MIR) results, it can be concluded that the crystalline phase present in the tested materials was NaCa(SiO) (combeite). Material was doped with Eu ions, which act as a spectroscopic probe for monitoring the structural changes in the glass matrix. The decreasing value of the fluorescence intensity radio parameter indicated symmetry around the europium ions and, thus, the arrangement of the glass structure. The bioactive properties of the examined glass-ceramics were also determined. The bioactive glass fibers doped with Eu were manufactured using two different methods. Its structural and luminescent properties were examined.
本文介绍了使用差示扫描量热法对45S5生物玻璃结晶动力学的研究。采用弗里德曼方法进行热分析。计算了活化能和阿弗拉米指数。对玻璃样品在620℃进行额外的受控热处理，以获得具有增强机械性能的生物活性玻璃陶瓷。X射线粉末衍射（XRD）测量表明形成了三种环硅酸盐的玻璃陶瓷结构：NaCa(SiO)或NaCa(SiO)或NaCa(SiO)。根据中红外区域（MIR）结果，可以得出结论，测试材料中存在的晶相是NaCa(SiO)（硅硼钙石）。材料用Eu离子掺杂，Eu离子作为光谱探针用于监测玻璃基体中的结构变化。荧光强度比率参数值的降低表明铕离子周围的对称性，从而表明玻璃结构的排列。还测定了所研究玻璃陶瓷的生物活性。采用两种不同方法制备了掺杂Eu的生物活性玻璃纤维。对其结构和发光性能进行了研究。
