TY - GEN
T1 - Preparation of amorphous calcium phosphate/triclcium silicate composite powders
AU - Lin, Qing
AU - Li, Yanbao
AU - Lan, Xianghui
AU - Lu, Chunhua
AU - Xu, Zhongzi
PY - 2009
Y1 - 2009
N2 - The amorphous calcium phosphate (ACP)/tricalcium silicate (Ca 3SiO5, C3S) composite powders were synthesized in this paper. The exothermal behavior of C3S determined by isothermal conduction calorimetry indicated that the ACP could be synthesis by chemical precipitation method during the induction period (stage II) of C 3S. The composite powders were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). The results indicated that nanosized ACP particles deposited on the surface of C3S particles to form core-shell structure at pH=10.5, and the nca/np of ACP could be controlled between 1.0 and 1.5. The core-shell structure is stable after sintered at 500 0C for 3 h to remove the β-cyclodextrin (β-CD). As compared with the irregular C3S particles (1∼5 μm), the composite powders particles are spherical with a diameter of 40∼150 μm. Therefore, to obtain the smaller size of composite powders, it is expected to avoid the aggregate of C3S particles in the aqueous solution by addition of dispersant. As compared with C3S, the composite powders may contribute better injectability, strength and biocompatibility.
AB - The amorphous calcium phosphate (ACP)/tricalcium silicate (Ca 3SiO5, C3S) composite powders were synthesized in this paper. The exothermal behavior of C3S determined by isothermal conduction calorimetry indicated that the ACP could be synthesis by chemical precipitation method during the induction period (stage II) of C 3S. The composite powders were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). The results indicated that nanosized ACP particles deposited on the surface of C3S particles to form core-shell structure at pH=10.5, and the nca/np of ACP could be controlled between 1.0 and 1.5. The core-shell structure is stable after sintered at 500 0C for 3 h to remove the β-cyclodextrin (β-CD). As compared with the irregular C3S particles (1∼5 μm), the composite powders particles are spherical with a diameter of 40∼150 μm. Therefore, to obtain the smaller size of composite powders, it is expected to avoid the aggregate of C3S particles in the aqueous solution by addition of dispersant. As compared with C3S, the composite powders may contribute better injectability, strength and biocompatibility.
KW - Amorphous calcium phosphate
KW - Bioactivity
KW - Tricalcium silicate
UR - http://www.scopus.com/inward/record.url?scp=74049084971&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/AMR.79-82.1643
DO - 10.4028/www.scientific.net/AMR.79-82.1643
M3 - 会议稿件
AN - SCOPUS:74049084971
SN - 0878493042
SN - 9780878493043
T3 - Advanced Materials Research
SP - 1643
EP - 1646
BT - Multi-Functional Materials and Structures II
T2 - 2nd International Conference on Multi-Functional Materials and Structures, MFMS-2009
Y2 - 9 October 2009 through 12 October 2009
ER -