Paper Titles
The Structure and Properties of Electroceramics for Bone Graft Substitution
p.99
Variations in the Compression Strength of Cylindrical Samples Made of Dense Hydroxyapatite
p.103
The Differences between the Direct and Sol-Gel Syntheses of Silicon-Contained Calcium Phosphates
p.107
Montmorillonite-Added Calcium Phosphate Bioceramic Foams
p.111
Effect of Amine Additives on the Morphology of Hydroxyapatite
p.115
Fully Interconnected Globular Porous Biphasic Calcium Phosphate Ceramic Scaffold Facilitates Osteogenic Repair
p.119
Techniques for Manufacturing FGM Bioceramics
p.123
BSA Adsorption on Hydroxyapatite after Thermal Treatment
p.127
Biocompatibility Evaluation of Porous Si-Containing Hydroxyapatite Derived from Coral
p.131

Effect of Amine Additives on the Morphology of Hydroxyapatite

Article Preview

Abstract:

Long HA whiskers with uniform morphology, high aspect ratio, and good crystallinity could be prepared using a hydrothermal technique at 180 oC for 10 h. Whisker morphology was sensitively-dependent on preparation conditions. Compared with formamide and urea, acetamide showed a low hydrolysis rate; it was found to be an appropriate additive to synthesize HA whiskers. Length and aspect ratio could be controlled by selecting solution conditions with the Ca/P ratio at 1.67 in the range 42 - 84 mmol/L calcium and 25 - 50 mmol/L phosphate and 0.75 – 1.25 mol/L additive concentration (as amide, -NH2).

You might also be interested in these eBooks
Bioceramics 20 View Preview

Info:

Periodical:

Key Engineering Materials (Volumes 361-363)

Pages:

115-118

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.361-363.115

Citation:

Cite this paper

Online since:

November 2007

Authors:

Hong Quan Zhang, Brian W. Darvell

Keywords:

Amine Additives, Hydrolysis, Hydrothermal Synthesis, Hydroxyapatite Whiskers, Morpholoy

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2008 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] T. Kasuga, Y. Ota, M. Nogami, and Y. Abe: Biomaterials Vol. 22 (2001), p.19.

Google Scholar

[2] W. Suchanek, M. Yashima, M. Kakihan, and M. Yoshimura: J. Am. Ceram. Soc. Vol. 80 (1997), p.2805.

Google Scholar

[3] H.H.K. Xu, J.B. Quinn, D.T. Smith, A.A. Giuseppetti, and F.C. Eichmiller: Dent. Mater. Vol. 19 (2003), p.359.

Google Scholar

[4] T. Toyama, A. Oshima, and T. Yasue: J. Ceram. Soc. Jpn. Vol. 109 (2001), p.232.

Google Scholar

[5] A. Yasukawa, K. Kamiuchi, T. Yokoyama, and T. Ishikawa: J. Solid State Chem. Vol. 163 (2002), p.27.

Google Scholar

[6] R.M. Wilson, J.C. Elliott, and S.E.P. Dowker: J. Solid State Chem. Vol. 174 (2003), p.132.

Google Scholar

[7] A. Yasukawa, H. Takase, K. Kandori, and T. Ishikawa: Polyhedron Vol. 13 (1994), p.3071.

Google Scholar

[8] Y. Mizutani, M. Hattori, M. Okuyama, T. Kasuga, and M. Nogami: J. Mater. Sci. - Mater. Med. Vol. 16 (2005), p.709.

Google Scholar

[9] S. Koutsopoulos: J. Biomed. Mater. Res. Vol. 62 (2002), p.600.

Google Scholar