Fabrication of Hydroxyapatite Ceramics with Interconnected Macro Porosity

Abstract:

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Calcium phosphate bioceramics with an interconnective pore structure were produced by foaming of hydroxyapatite and methyl phenyl poly(silsequioxane) melts in the temperature range between 250 °C and 310 °C. The cellular structure of the resulting porous bodies were controlled by foaming parameters and filler load. A porosity of up to 92 % was achieved by decreasing the HAfiller amount and increasing the foaming temperature. Subsequent pyrolysis in air at temperatures of 900 °C and 1100 °C resulted in macroporous foams composed of HA and HA/b-TCP, respectively. The porous bodies with tailorable structure and composition are of interest for bone tissue engineering scaffolds and orthopedic implants.

Info:

Periodical:

Key Engineering Materials (Volumes 284-286)

Main Theme:

Edited by:

Panjian Li, Kai Zhang and Clifford W. Colwell, Jr.

Pages:

277-280

DOI:

10.4028/www.scientific.net/KEM.284-286.277

Citation:

L. Müller et al., "Fabrication of Hydroxyapatite Ceramics with Interconnected Macro Porosity ", Key Engineering Materials, Vols. 284-286, pp. 277-280, 2005

Online since:

April 2005

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Price:

$35.00

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