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Proceedings Paper

Bioactive porous ceramics via polymeric sponge method: the effect of preparation conditions on physical properties
Author(s): I. Sopyan; J. Kaur; S. Ramesh; M. Hamdi
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Paper Abstract

Hydroxyapatite (HA) porous materials for artifical human cancellous bone applications have been prepared via polymeric sponge method. Suspensions of the nanostructured hydroxyapatite powders were prepared with a fixed amount of distilled water and HA loading. After soaking cellulosic sponges into the suspension, the sponges were dried and then subjected to heat-treatment at 600°C, followed by sintering at 1250°C for 1 h. No alteration in structure found after sintering. The effect of sintering rate on the physical properties was also investigated in the study on two samples prepared based on a HA loading of 44% in the starting slurry. The study found that the average apparent density of the porous bodies were 2.03 g/cm3 and 1.69 g/cm3 with porosites of 36 and 46 % for the faster and the slower sintering, respectively. Morphological evaluation of the porous bodies shown that both the samples contained macropores of 200-500 μm diameter, which fulfill the minimum pore size of 100 μm as medically required. Excellent pore interconnectivity was found in all the samples. The measurement of compressive strength provided the values of 10.0 and 4.3 MPa for the faster and the slower sintering, respectively. It was also shown that the difference in sintering rate influenced the crystallinity of porous HA obtained.

Paper Details

Date Published: 1 November 2007
PDF: 8 pages
Proc. SPIE 6423, International Conference on Smart Materials and Nanotechnology in Engineering, 64233D (1 November 2007); doi: 10.1117/12.780045
Show Author Affiliations
I. Sopyan, International Islamic Univ. (Malaysia)
J. Kaur, Malaysia Univ. of Science and Technology (Malaysia)
S. Ramesh, Univ. Tenaga Nasional (Malaysia)
M. Hamdi, Univ. Malaya (Malaysia)

Published in SPIE Proceedings Vol. 6423:
International Conference on Smart Materials and Nanotechnology in Engineering
Shanyi Du; Jinsong Leng; Anand K. Asundi, Editor(s)

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