A study on synthesized hydroxylapatite bioceramics
Journal
Ceramics International
Journal Volume
15
Journal Issue
6
Pages
351-356
Date Issued
1989
Author(s)
Abstract
Sodium-doped hydroxylapatite powder was synthesized by the wet chemical method. Powder behavior, thermal stability, mechanical strength and biocompatibility were investigated. The synthesized hydroxylapatite powder consisted of needles 1800 Å in width and 260 Å in length. The particle size, specific area (BET) and Ca/P atomic ratio were 0·1-0·3 μm, 29·9 m2/g and 1·62 respectively. A large amount of absorbed water existed in the powder, and evaporated on heating to 1000°C. Differential thermal analysis showed that no phase transformation occurred during heating to 1250°C. After heating at 1250°C for 1 h, the OH bond was still found in the synthesized powder, by IR spectrophotometry. The optimum sintering condition was heating at 1200°C for 4 and this resulted in 680 MPa compressive strength, 1-1·3 μm mean grain size and 99% T.D. The synthesized hydroxylapatite showed no cytotoxicity and had excellent tissue compatibility. This powder possesses a high potential for bone implantation. © 1989.
SDGs
Type
journal article