Chapter 7. Synthesis of Hydroxy Apatite/Alumina Nanocomposites Via Microemulsions

  1. Waltraud M. Kriven and
  2. Hua-Tay Lin
  1. X. Bao and
  2. Y. X. Pang

Published Online: 27 MAR 2008

DOI: 10.1002/9780470294802.ch7

27th Annual Cocoa Beach Conference on Advanced Ceramics and Composites: A: Ceramic Engineering and Science Proceedings, Volume 24, Issue 3

27th Annual Cocoa Beach Conference on Advanced Ceramics and Composites: A: Ceramic Engineering and Science Proceedings, Volume 24, Issue 3

How to Cite

Bao, X. and Pang, Y. X. (2003) Synthesis of Hydroxy Apatite/Alumina Nanocomposites Via Microemulsions, in 27th Annual Cocoa Beach Conference on Advanced Ceramics and Composites: A: Ceramic Engineering and Science Proceedings, Volume 24, Issue 3 (eds W. M. Kriven and H.-T. Lin), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294802.ch7

Author Information

  1. Institute of Polymer Technology and Materials Engineering, Loughborough University, Loughborough, Leicestershire LE11 3TU, United Kingdom

Publication History

  1. Published Online: 27 MAR 2008
  2. Published Print: 1 JAN 2003

ISBN Information

Print ISBN: 9780470375839

Online ISBN: 9780470294802

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Keywords:

  • hydroxyapatite/alumina;
  • microemulsions;
  • x-ray diffraction;
  • cyclohexane;
  • alcohol

Summary

Hydroxyapatite/alumina (HA/AI2O3) nanocomposites were synthesised in a novel water-in-oil microemulsion system consisting of a non-ionic surfactant, cyclohexane as the oil phase and the corresponding salt solutions as the aqueous phase. The syntheses were carried out in microemulsions with fixed cyclohexane-to-surfactant ratio of 70/30 by mass. Influence of synthetic parameters such as oil/water phase ratios and HA/AI2O3 compositions, were explored in some details. The resultant nanocomposites were characterised by means of transmission electron microscopy (TEM) and x-ray diffraction (XRD). Results showed that the particle morphology and the calcination behaviour of resultant nanocomposites were strongly dependent on the composition of nanocomposites. There are generally four phases in the calcined nanocomposites. The crystalline HA phase in the nanocomposites was formed at 700°C, whereas aL-AI2O3 phase was only obtained at 1200°C, depending on the nanocomposite compositions.