中国组织工程研究

中国组织工程研究 ›› 2011, Vol. 15 ›› Issue (38): 7109-7112.doi: 10.3969/j.issn.1673-8225.2011.38.018

• 纳米生物材料 nanobiomaterials • 上一篇    下一篇

羟基磷灰石/单壁碳纳米管复合材料的表征

蒲  辉，李  钧，李晓莉，张阳德，龚连生   

  1. 中南大学卫生部肝胆肠外科研究中心，湖南省长沙市 410008
  • 收稿日期:2010-12-22 修回日期:2011-03-26 出版日期:2011-09-17 发布日期:2011-09-17
  • 通讯作者: 龚连生，博士，教授，博士生导师，中南大学肝胆肠外科研究中心，湖南省长沙市 410008 gongliansheng8280@yahoo.com.cn
  • 作者简介:蒲辉，男，1977年生，汉族，2001年南华大学毕业，主治医师，主要从事纳米材料方面的研究。 puh2000@21cn.com

Characterization of nano-hydroxyapatite/single walled carbon nanotube composite

Pu Hui, Li Jun, Li Xiao-li, Zhang Yang-de, Gong Lian-sheng   

  1. Research Center of Hepatobiliary intestinal Surgery, Ministry of Health, Central South University, Changsha  410008, Hunan Province, China
  • Received:2010-12-22 Revised:2011-03-26 Online:2011-09-17 Published:2011-09-17
  • Contact: Gong Lian-sheng, Doctor, Professor, Doctoral supervisor, Research Center of Hepatobiliary intestinal Surgery, Ministry of Health, Central South University, Changsha 410008, Hunan Province, China gongliansheng8280@yahoo.com.cn
  • About author:Pu Hui, Attending physician, Research Center of Hepatobiliary intestinal Surgery, Ministry of Health, Central South University, Changsha 410008, Hunan Province, China puh2000@21cn.com

PDF

320

被引次数

8

摘要：

背景：羟基磷灰石具有接近自然人骨的强韧度和优越的生物相容性，但其力学性能却较差。
目的：制成并研究一种新型生物活性材料(羟基磷灰石/单壁碳纳米管复合材料)的各种性质。
方法：利用原位合成法制备羟基磷灰石单壁碳纳米管复合材料，并对其红外光谱、微观结构及XDR衍射分析，力学性能进行测试，对不同SWNT含量的SWNT/HAp复合材料弯曲强度与断裂韧性比较分析。
结果与结论：成功制备出的纳米羟基磷灰石单壁碳纳米管复合材料，其抗弯强度最大增幅将近50%，达到73 MPa;而断裂韧性的最大提高幅度为3倍，达到2.6 MPa•m1/2。随着单壁碳纳米管复合材料含量的增加，复合材料的弯曲强度与断裂韧性呈现出缓慢上升的趋势。提示，纳米羟基磷灰石单壁碳纳米管复合材料显著提高了接近自然人骨的纳米级磷灰石骨材料的抗弯强度和断裂韧性，从而克服传统支撑骨材料的力学性能缺陷。

关键词: 羟基磷灰石, 单壁碳纳米管, 力学性能, 人工骨, 复合材料

Abstract:

BACKGROUND: Hydroxyapatite has robustness close to natural bone and good biocompatibility, but its mechanical properties are poor.
OBJECTIVE: To study the properties of a new bioactive material (nano-hydroxyapatite/single walled carbon nanotube composite, HA/SWNT).
METHODS: HA/SWNT nanoparticles were prepared by using in situ synthesis method. Infrared spectrogram (IR), microstructure, X-ray diffraction (XRD), and mechanical properties were detected. The bending strength and fracture toughness of SWNT/HAp composites with different SWNT contents were compared.
RESULTS AND CONCLUSION: Bending strength of HA/SWNT nanoparticles increased by 50% maximum, and reached 73 MPa. Its fracture toughness was improved by almost 300% and reached 2.6 MPa•m1/2. With the increase of SWNT contents, the bending strength and fracture toughness of the composites were gradually increased. Various performance of HA/SWNT composites are improve greatly to overcome the shortcomings of traditional bone materials.

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