文章摘要
漆小鹏,李文,罗远方,杨辉.新型钇-羟基磷灰石骨水泥的制备及性能研究[J].材料导报,2017,31(13):151-155
新型钇-羟基磷灰石骨水泥的制备及性能研究
Preparation and Properties of a Novel Yttrium-hydroxyapatite Cement
  
DOI:10.11896/j.issn.1005-023X.2017.013.020
中文关键词: 钇 羟基磷灰石骨水泥 抗压强度 骨修复
英文关键词: yttrium, hydroxyapatite cement, compressive strength, bone repair
基金项目:江西理工大学科研基金重点课题(NSFJ2014-K10)
作者单位E-mail
漆小鹏 江西理工大学材料科学与工程学院,赣州 341000 81714680@qq.com 
李文 江西理工大学材料科学与工程学院,赣州 341000  
罗远方 江西理工大学材料科学与工程学院,赣州 341000  
杨辉 江西理工大学材料科学与工程学院,赣州 341000  
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中文摘要:
      利用高温固相法合成了掺钇的磷酸四钙,将其与无水磷酸氢钙以物质的量比1∶1混合制备了钇-羟基磷灰石骨水泥(Y-HAC)。结果表明:少量钇的掺入不会改变骨水泥的水化产物,骨水泥能正常水化,水化产物为弱结晶羟基磷灰石。与纯羟基磷灰石骨水泥(HAC)相比,Y-HAC的湿态抗压强度提高了120%,干态抗压强度提高了85%。同时,钇的掺入还提高了材料的孔隙率。Y-HAC的微观结构呈现紧密结合的片状羟基磷灰石结晶体。体外释放实验表明,钇的释放量极低,说明钇-羟基磷灰石骨水泥具有较好的稳定性。Y-HAC是一种很有前途的骨组织修复材料,并可用于载药材料和骨组织工程支架材料。
英文摘要:
      The tetracalcium phosphate (TTCP) doped with yttrium was prepared by high temperature solid state method. Then the TTCP doped with yttrium was mixed with dicalcium phosphate anhydrous (DCPA) at a molar ratio of 1∶1 to form ytt-rium-hydroxyapatite cement (Y-HAC). The results showed that the reaction product of Y-HAC is poorly crystalline hydroxyapatite, indicating that the addition of small amount of yttrium has not changed the hydration reaction of hydroxyapatite cement (HAC). The wet compressive strength of Y-HAC increased 120% and dry compressive strength increased 85%, compared with that of HAC. The porosity of specimens has been augmented with the doping of yttrium. There exists some changes in crystallization morphology of Y-HAC, emerging many closely combined flaked crystals and construct a three-dimensional network structure. The in-vitro release experiment indicated that Y-HACs have very low release of yttrium. The Y-HAC might be a potential material for bone substitute, drug-loaded and bone tissue engineering.
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