Journal of South China University of Technology (Natural Science Edition) ›› 2010, Vol. 38 ›› Issue (7): 107-111,121.doi: 10.3969/j.issn.1000-565X.2010.07.019

• Materials Science & Technology • Previous Articles     Next Articles

Synthesis of Octacalcium Phosphate Fibers via Homogeneous Precipitation

Wang Xiao-jun  Fang Li-ming  Zhao Yao-ming   

  1. School of Materials Science and Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2009-10-20 Revised:2009-12-02 Online:2010-07-25 Published:2010-07-25
  • Contact: 方立明（1979-）,男,讲师,博士,主要从事生物材料制备与研究.E-mail： lmfang@scut.edu.cn E-mail:xiaojun_wang@yahoo.cn
  • About author:王小俊（1980-）,女,博士生,主要从事材料合成与加工研究.
  • Supported by:

    国家自然科学基金资助项目（50803019）; 广东省自然科学基金资助项目（8451064101000727）; 广州市科技局科技计划项目（2008J1-C101）

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Abstract:

Octacalcium phosphate fibers were synthesized via homogeneous precipitation,and the product was characterized by means of FT-IR,XRD and SEM. Then,the effects of synthesis temperature and reactant concentration on the morphology and composition of the product were discussed,with a significant effect being observed. Experimental results show that high temperature helps to accelerate the precipitation of OCP and obtain fine product with high yield,that too low urea concentration may result in highly inhomogeneous size distribution of OCP,while too high urea concentration may result in large and short product mixture of OCP and hydroxyapatite,and that fine OCP fibers can be synthesized via the homogeneous precipitation at 90℃,with an initial pH value of about 2. 2 and an final pH value of about 5. 0,and with 0. 167 mol/L Ca（ NO3） 2,0. 1 mol/L （ NH4） 2HPO4 and 0. 6 ～ 0. 7 mol/L （ NH2） 2CO as the reactants.

Key words: octacalcium phosphate, fiber, homogeneous precipitation