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Paper Titles
Effect of OH Content on the Bioactivity of Sol-Gel Derived Glass Foam Scaffolds
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Bimodal Porous β-TCP Ceramics and its Dissolution in Phosphate Buffer Saline
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Effect of Cooling Rate and Particle Size on Compressive Strength of Macroporous Hydroxyapatite

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Abstract:

The objective of this study was to produce a macroporous hydroxyapatite(HA) scaffold with high strength by controlling the size of HA particles as well as cooling rate from the sintering temperature. Macroporous polyurethane sponge was employed as template to manufacture the macroporous HA scaffolds. Particle sizes of HA powders selected in this study were 4 µm and 7 µm. They were dispersed in distilled water with organic additives and infiltrated into polyurethane sponge. After drying and sintering at 1300oC, cooled down to room temperature slowly to prevent microcracking either 1oC/min or 3oC/min. Density, porosity and compressive strength were measured with different particle size and cooling rate. Both density and compressive strength were increased with decreasing particle size or cooling rate, while porosity was not related to.

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Info:

Periodical:

Key Engineering Materials (Volumes 309-311)

Pages:

1047-1050

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.309-311.1047

Citation:

Cite this paper

Online since:

May 2006

Authors:

Yeon Ung Kim, Byung Hyun Lee, Min Chul Kim, Kyoung Nam Kim, Kwang Mahn Kim, Seong Ho Choi, Chong Kwan Kim, Racquel Z. LeGeros, Yong Keun Lee

Keywords:

Cooling Rate, Hydroxyapatite (HAP), Macroporous, Particle Size, Scaffold, Tissue Engineering

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