不同掺锶聚磷酸钙骨修复材料的抗压强度评价  

Evaluation of the mechanic properties of the strontium-doped calcium polyphosphate

作　　者：邱凯[1] 万昌秀[1] 陈馨 

机构地区：[1]四川大学高分子科学与工程学院 [2]国家医疗保健器械工程技术研究中心 510500

出　　处：《口腔材料器械杂志》2005年第2期61-63,共3页Chinese Journal of Dental Materials and Devices

基　　金：国家自然科学基金资助项目(50472091)

摘　　要：目的研究不同含锶量的聚磷酸钙骨修复材料的机械性能。方法通过溶液反应方法制备11种含不同锶/钙(Sr/Ca)摩尔比例的磷酸二氢锶和磷酸二氢钙的混合物,经高温烧结后制得掺锶聚磷酸钙骨修复材料,并测得其抗压强度以及在降解过程中压强变化。结果不同掺锶量的聚磷酸钙具有不同的力学强度,其中锶钙比为3:7的掺锶聚磷酸钙强度最高,达到309MPa,并且在降解过程中强度损失率比聚磷酸钙慢。结论锶元素的加入可以提高聚磷酸钙的力学强度并可以减缓降解过程中材料的强度损失。Objective To study the mechanic properties of strontium-doped calcium polyphosphate ceramics containing different amounts of strontium. Methods The samples of strontium-doped calcium polyphosphate for study were prepared by sintering the mixture of calcium phosphate monobasic monohydrate and strontium phosphate monobasic monohydrate. The evaluation of mechanic property was done by measuring the compressive strength or its change during the degradation. Results The compressive strength of strontium-doped calcium polyphosphate, in which the molar ratio of Ca/Sr was 3:7, was the highest of 309Mpa. The strength loss of the sample was slower than that of the calcium polyphosphate. Conclusion The strength of samples can be increased and its strength loss can be slower with the addition of strontium to the calcium polyphosphate.

关 键 词：骨修复材料 聚磷酸钙 抗压强度 降解过程 力学强度 磷酸二氢钙 机械性能 高温烧结 含锶量 混合物 锶元素 

分 类 号：R318.08[医药卫生—生物医学工程] R783.1[医药卫生—基础医学]