Hydrothermal preparation of porous hydroxyapatite with tailored crystal surface

Koji Ioku, G. Kawachi, N. Yamasaki, M. Toda, H. Fujimori, S. Goto

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Porous sheets of hydroxyapatite (Ca10(PO)4(OH) 2; HA) with about 50 μm to 1 mm in thickness and porous HA granules of about 50 μm to 1 mm in size with tailored crystal surface were prepared by the hydrothermal vapor exposure method at the temperatures above 105 °C under saturated vapor pressure of pure water. Porous HA sheets with about 75 % porosity prepared at 120 °C were composed of rod-shaped crystals of about 30 μm in length. Porous HA granules prepared at 160 °C were also composed of rod-shaped crystals of about 20 μm in length with the mean aspect ratio of 30. These crystals were elongated along the c-axis. Rod-shaped HA crystals were locked together to make micro-pores of about 0.1 μm in size. Both of materials were non-stoichiometric HA with calcium deficient composition. These materials must have the advantage of adsorptive activity, because they had large specific crystal surface and much micro-pores.

Original languageEnglish
Pages (from-to)521-524
Number of pages4
JournalKey Engineering Materials
Volume288-289
Publication statusPublished - 2005
Externally publishedYes

Fingerprint

Durapatite
Hydroxyapatite
Crystals
Vapor pressure
Aspect ratio
Calcium
Porosity
Vapors
Water
Chemical analysis

Keywords

  • Artificial bone
  • Crystal
  • Hydrothermal
  • Hydroxyapatite
  • Porous material

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemical Engineering (miscellaneous)

Cite this

Ioku, K., Kawachi, G., Yamasaki, N., Toda, M., Fujimori, H., & Goto, S. (2005). Hydrothermal preparation of porous hydroxyapatite with tailored crystal surface. Key Engineering Materials, 288-289, 521-524.

Hydrothermal preparation of porous hydroxyapatite with tailored crystal surface. / Ioku, Koji; Kawachi, G.; Yamasaki, N.; Toda, M.; Fujimori, H.; Goto, S.

In: Key Engineering Materials, Vol. 288-289, 2005, p. 521-524.

Research output: Contribution to journalArticle

Ioku, K, Kawachi, G, Yamasaki, N, Toda, M, Fujimori, H & Goto, S 2005, 'Hydrothermal preparation of porous hydroxyapatite with tailored crystal surface', Key Engineering Materials, vol. 288-289, pp. 521-524.
Ioku K, Kawachi G, Yamasaki N, Toda M, Fujimori H, Goto S. Hydrothermal preparation of porous hydroxyapatite with tailored crystal surface. Key Engineering Materials. 2005;288-289:521-524.
Ioku, Koji ; Kawachi, G. ; Yamasaki, N. ; Toda, M. ; Fujimori, H. ; Goto, S. / Hydrothermal preparation of porous hydroxyapatite with tailored crystal surface. In: Key Engineering Materials. 2005 ; Vol. 288-289. pp. 521-524.
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