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Acta Chimica Sinica ›› 2005, Vol. 63 ›› Issue (22): 2077-2081. Previous Articles     Next Articles

Original Articles

CaO-P2O5-SiO2系统溶胶-凝胶生物活性多孔材料在SBF中的性能研究

张晓凯*,1，陈晓峰2，王迎军2，张梅梅3   

  1. (1山东师范大学物理与电子科学学院 理化分析测试中心 济南 250014)
    (2华南理工大学材料学院生物材料研究所 广州 510640)
    (3山东轻工业学院材料科学与工程系 济南 250100)
  • 投稿日期:2005-03-23 修回日期:2005-08-29 发布日期:2010-12-10
  • 通讯作者: 张晓凯

Performance Investigation of the Sol-gel Porous Biomaterial ofthe System CaO-P2O5-SiO2 in SBF Solution

ZHANG Xiao-Kai*,1, CHEN Xiao-Feng2, WANG Ying-Jun2, ZHANG Mei-Mei3   

  1. (1 College of Physics and Electronics, Analysis and Testing Center, Shandong Normal University, Ji'nan 250014)
    (2 Institute of Biomaterials, College of Materials Science and Engineering,
    South China University of Technology, Guangzhou 510640)
    (3 Department of Materials Science and Engineering, Shandong Institute of Light Industry, Ji'nan 250100)
  • Received:2005-03-23 Revised:2005-08-29 Published:2010-12-10
  • Contact: ZHANG Xiao-Kai

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The porous bioactive material was prepared through secondary sintering of the sol-gel derived glass powder in the system CaO-P2O5-SiO2. The micro-morphologies, crystalline phases and bioactivity were investigated using in vitro test, XRD, SEM and FTIR techniques. It was indicated that a few Ca5(PO4)2SiO4 crystals (5CPS) were already formed in the porous material during sintering at 800 ℃ for 5 min. In the simulated body fluid (SBF), as the reaction progressed, the originally formed amorphous-phosphorus compound on the surface of glass were mineralized into hydroxy-carbonate-apatite (HCA) nanometer cluster, and interfused mutually until the HCA covering were formed. HCA crystallites were only formed on the glass phase, however not on the surface of 5CPS. This kind of material has the better bioactivity and biodegradability in SBF solution at the constant temperature 37 ℃.

Key words: sol-gel technology, bioactivity, simulated body fluid (SBF), hydroxyl-carbonate-apatite (HCA)