摘要
The composition and structure of bone apatite and synthetic hydroxyapatite powder prepared by precipitation method, sol-gel method was studied by FTIR, EMPA, AFM in this paper. The results showed that the composition and phase structure of apatite powder prepared by sol-gel method was most similar with that in the bone. The caleium phosphate ratios of apatite prepared two kinds of wet precipitation was 1.69, and 1.73 respectively. The culcium phosphate ratio of apatite prepared by sol-gel method was 1.66. The apatite powder prepared by sol-gel nwthod was hoped to be more bionctive and biocompatible compared with apatite powder prepared by wet precipitation method. The EMPA results prored thor the bone consisted of Ca, P,O, Na, Mg , K, Cl, etc elemeuts. The amount of aptaite decreased while amount of collagen increased from the outer layer to inner layer of the bone. AFM results showed that HA particle, with the size about 150-450 nm in length, 100- 150 nm in width, 15-40 nm in thickness, grown layer upon layer regularly. The long axis was not always parallel to the eollagen fiber. The angle between eollagen fiber and aputite lamellar was about 30-45 degree.
The composition and structure of bone apatite and synthetic hydroxyapatite powder prepared by precipitation method, sol-gel method was studied by FTIR, EMPA, AFM in this paper. The results showed that the composition and phase structure of apatite powder prepared by sol-gel method was most similar with that in the bone. The caleium phosphate ratios of apatite prepared two kinds of wet precipitation was 1.69, and 1.73 respectively. The culcium phosphate ratio of apatite prepared by sol-gel method was 1.66. The apatite powder prepared by sol-gel nwthod was hoped to be more bionctive and biocompatible compared with apatite powder prepared by wet precipitation method. The EMPA results prored thor the bone consisted of Ca, P,O, Na, Mg , K, Cl, etc elemeuts. The amount of aptaite decreased while amount of collagen increased from the outer layer to inner layer of the bone. AFM results showed that HA particle, with the size about 150-450 nm in length, 100- 150 nm in width, 15-40 nm in thickness, grown layer upon layer regularly. The long axis was not always parallel to the eollagen fiber. The angle between eollagen fiber and aputite lamellar was about 30-45 degree.
基金
FundedbyScienceDevelopmentPlanFoundationofShandongProvince(No.01120106)
