Chinese Journal of Tissue Engineering Research ›› 2011, Vol. 15 ›› Issue (38): 7109-7112.doi: 10.3969/j.issn.1673-8225.2011.38.018

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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

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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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