超声化学法合成羟基磷灰石-明胶复合材料

Synthesis of Hydroxyapatite/Gelatin Composites by Sonochemistry Method

以Ca(NO3)2,(NH4)2HPO4,明胶和戊二醛为原料,用超声化学法合成了尺寸约为30nm×100nm,平均长径比在2～3,分散性良好的羟基磷灰石-明胶复合材料。对比研究了超声化学法与传统化学沉淀法对复合材料结晶性能和力学性能的影响。结果表明,与传统化学沉淀法相比,超声化学法可以在较短时间内显著提高羟基磷灰石的结晶度、改善结晶状态,使复合材料的抗拉强度和抗压强度分别达到52.4MPa和56.8MPa。

Hydroxyapatite/Gelatin composites with a mean size of 30 nm×100 nm,slenderness ratio 2~3 and fine dispersibility are prepared by a sonochemistry method,using Ca(NO3)2,(NH4)2HPO4,Gelatin and Glutaraldehyde as reacting agents. The influences of ultrasonic trestment on the crystallinity and mechanical properties of composites are investigated by comparing with the conventional precipitation method under the same factors. Compared to the conventional process,the sonochemistry method could effectively increase the synthetic efficiency,improve crystalline state of the composites. It is found that the strength of extension and compression strength separate reach 52.4 MPa and 56.8 MPa.