Preparation of Submicron-Sized Hydroxyapatite Powders by Spray Pyrolysis

Jung Sang Cho; Sang Hoon Rhee

doi:10.4028/www.scientific.net/KEM.493-494.215

Paper Titles

Gallium-Doped β-Tricalcium Phosphate Ceramics: Characterization and Properties
p.195

Effect of Al₂O₃, ZrO₂, and TiO₂ Addition on the Mechanical Properties and the Microstructure of Natural Hydroxyapatite Obtained from Calf Femoral Bone
p.199

In Vitro Dynamic Degradation of Strontium-Hydroxyapatite Granules
p.205

In Vitro Evaluations of a Mechanically Optimized Calcium Phosphate Cement as a Filler for Bone Repair
p.209

Preparation of Submicron-Sized Hydroxyapatite Powders by Spray Pyrolysis
p.215

Recrystallization of Amorphized α-TCP
p.219

Raman and Infrared Studies of Substituted β-TCP
p.225

The Effect of Microwave Irradiation on Structural and Mechanical Properties of Nano-Structured Bone-Like Carbonated Hydroxyapatite
p.231

In Vivo Behaviour of the Synthetic Porous Hydroxyapatite Prepared by Low Temperature Microwave Processing and Comparison with Deproteinized Bovine Bone
p.236

HomeKey Engineering MaterialsKey Engineering Materials Vols. 493-494Preparation of Submicron-Sized Hydroxyapatite...

Preparation of Submicron-Sized Hydroxyapatite Powders by Spray Pyrolysis

Abstract:

Dense and submicron-sized hydroxyapatite powders were synthesized through spray pyrolysis of calcium phosphate solution with polyethylene glycol (PEG). Irregular shaped and fragile hydroxyapatite aggregates, and spherical and hollow hydroxyapatite particles were obtained after spray pyrolysis at 1100 °C when using calcium phosphate solution with and without PEG, respectively. After dewaxing at 650 °C for 3 hours, the hydroxyapatite aggregates were broken into submicron-sized particles whereas micron-sized spherical hollow particles were almost intact. The relative densities of hydroxyapatite disks made by submicron and micron sized hydroxyapatite particles were about 90% and 81%, respectively, after sintering at 1110 °C for 3 hours. The results were explained in terms of the disintegrating function of carbon which was previously formed among the hydroxyapatite aggregates by the decomposition of PEG during spray pyrolysis.

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Periodical:

Key Engineering Materials (Volumes 493-494)

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215-218

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.493-494.215

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Online since:

October 2011

Authors:

Jung Sang Cho, Sang Hoon Rhee

Keywords:

Carbon, Hydroxyapatite (HAP), PEG, Powder, Spray Pyrolysis, Synthesis

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