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Inclusion of carbon nanotubes in a hydroxyapatite sol-gel matrix

Najafi, H ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. DOI: 10.1016/j.ceramint.2009.03.017
  3. Publisher: 2009
  4. Abstract:
  5. In this study, the inclusion of multi-walled carbon nanotubes as the second phase in the hydroxyapatite matrix, in order to improve the mechanical strength, has been performed via the sol-gel process. The stability of carbon nanotube sol with the changes of pH and dispersant values (sodium dodecyl sulfate) was evaluated by zeta potential analysis. The results indicated that synthesis of hydroxyapatite particles in the presence of the carbon nanotubes had the best result in homogenization of the carbon nanotube dispersion and faster crystallization of hydroxyapatite. The crystallization of hydroxyapatite phase was investigated with differential scanning calorimetry (DSC) and X-ray diffraction and the microstructure of the obtained composite powder was studied by electron microscopy. © 2009 Elsevier Ltd and Techna Group S.r.l
  6. Keywords:
  7. Composite powders ; Dispersant ; Hydroxyapatite particles ; Matrix ; Mechanical strength ; Nanotube dispersions ; Second phase ; Sodium dodecyl sulfate ; Sol-gel matrix ; Zeta potential analysis ; Apatite ; Crystallization ; Differential scanning calorimetry ; Gelation ; Gels ; Hydroxyapatite ; Multiwalled carbon nanotubes (MWCN) ; Sodium ; Sodium sulfate ; Sol-gel process ; Sol-gels ; Sols ; Zeta potential ; Carbon nanotubes
  8. Source: Ceramics International ; Volume 35, Issue 7 , 2009 , Pages 2987-2991 ; 02728842 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/pii/S0272884209001357