Microstructure and Controllable Degradation of Bioglass Reinforced Calcium Phosphate Scaffolds
A porous bioglass reinforced tricalcium phosphate scaffold was prepared. The microstructure, degradability and reaction products of the scaffold after immersed in a simulated body fluid for different days were emphatically investigated using scanning electron microscopy, energy-dispersive X-ray analysis, X-ray diffraction, Fourier transformed infrared spectroscopy and induced coupled plasma spectroscopy. The results showed that a homogeneous hydroxy-carbonate-apatite (HCA) layer forms on the surface of the scaffold for over 30- day immersion and the oriented growth of the HCA occurs. In addition, this paper discussed the competing mechanism between the dissolution and the precipitation via the measurement of calcium and silicon ionic concentrations in the SBF.
Wei Pan, Jianghong Gong, Chang-Chun Ge and Jing-Feng Li
K. H. Nan et al., "Microstructure and Controllable Degradation of Bioglass Reinforced Calcium Phosphate Scaffolds", Key Engineering Materials, Vols. 280-283, pp. 1599-1604, 2005