Porous Composite with Tunnel-like Interconnecting Pores of Hydroxyapatite with Magnetite Particles

Abstract:

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Porous composites of magnetite / hydroxyapatite with bimodal pore size distribution were prepared by hydrothermal method. Magnetite particles of about 1 µm in size with polyhedral shape were dispersed into hydroxyapatite porous matrix. The hydroxyapatite particles were rod-shaped crystals and the size of crystals were about 10 µm in length with the aspect ratio of over 25. Rod-shaped hydroxyapatite crystals were locked together to make micro-pores of about 0.8 µm in size. In addition, macro-pores of about 400 µm in size were prepared by our unique method. Hydroxyapatite in this composite was non-stoichiometric hydroxyapatite with calcium deficient composition. This composite must have the advantage of adsorptive activity and osteoconductivity, because the hydroxyapatite has many specific crystal surface and micro-pores. The composites of magnetite / hydroxyapatite must be suitable for the hyperthermia therapy of cancer in bones.

Info:

Periodical:

Key Engineering Materials (Volumes 309-311)

Main Theme:

Edited by:

Takashi Nakamura, Kimihiro Yamashita and Masashi Neo

Pages:

1039-1042

DOI:

10.4028/www.scientific.net/KEM.309-311.1039

Citation:

K. Ioku et al., "Porous Composite with Tunnel-like Interconnecting Pores of Hydroxyapatite with Magnetite Particles ", Key Engineering Materials, Vols. 309-311, pp. 1039-1042, 2006

Online since:

May 2006

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Price:

$35.00

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