应用化学 ›› 2012, Vol. 29 ›› Issue (01): 46-51.DOI: 10.3724/SP.J.1095.2011.00070

• 研究论文 • 上一篇    下一篇

造孔剂对电泳沉积制备多孔HA涂层及其生物活性的影响

张岚,黄紫洋*   

  1. (福建师范大学化学与材料学院 福州 350007)
  • 收稿日期:2011-02-22 修回日期:2011-05-13 出版日期:2012-01-10 发布日期:2012-01-10
  • 通讯作者: 黄紫洋,教授; Tel/Fax:0591-83465225; E-mail:zyhuang@fjnu.edu.cn; 研究方向:生物陶瓷材料
  • 作者简介: 
  • 基金资助:
    国家自然科学基金资助项目(30970887)

Fabrication and Bioactivity of Porous Hydroxyapatite Coating by Electrophoretic Deposition Using Different Porogens

ZHANG Lan, HUANG Ziyang*   

  1. (College of Chemistry and Materials Science,Fujian Normal University,Fuzhou 350007)
  • Received:2011-02-22 Revised:2011-05-13 Published:2012-01-10 Online:2012-01-10
  • Contact: HUANG Ziyang

摘要:

采用水热法制得的羟基磷灰石(HA)纳米粉体,分别与造孔剂葡萄糖(Glu)、壳聚糖(CS)、炭粉(C)3种微粒(<38.5 μm)配置成质量比1∶1的悬浮液,电泳沉积烧结制备钛基多孔HA涂层,并对制得的3种多孔HA涂层在模拟体液浸泡前后的表面形貌、化学组成及物相变化进行表征。 结果表明,经700 ℃烧结处理后制得的3种多孔HA涂层在1.5倍人体模拟体液中浸泡5 d后,多孔HA涂层表面均被层状生长的碳磷灰石颗粒完全覆盖,颗粒直径在5~25 μm,说明这些多孔HA涂层均具有良好的生物活性。 其中以CS为造孔剂制得的多孔HA涂层结合强度最高,达19.5 MPa,有望开发成为新型的人骨植入生物陶瓷材料。

关键词: 电泳沉积, 钛基材, 多孔羟基磷灰石涂层, 碳磷灰石, 生物活性

Abstract:

To improve the bioactivity and adhesion strength of hydroxyapatite(HA) coatings on titanium substrate, porous nano-HA coatings were deposited on titanium substrate using porogens such as glucose, starch and chitosan by electrophoretic deposition and sintering processes. The changes of surface morphology, chemical composition and phase composition of the porous HA coatings before and after immersion in simulated body fluid(SBF) were also investigated. The results showed that the porous HA coating was obtained by sintering at 700 ℃. These porous HA coating surfaces were covered by carbonate-apatite particles after immersion in 1.5 times ion concentration of SBF for 5 days, with diameter about 5~25 μm, indicating that these coatings possessed an excellent bioactivity on its surface. The adhesion strength between coating and substrate was up to 19.5 MPa using CS as porogens. The developed method is promising to develop new implant bioceramic materials of human bone.

Key words: electrophoretic deposition, titanium substrate, porous hydroxyapatite, carbonate-apatite, bioactivity

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