The effect of temperature on the properties of hydroxyapatite precipitated from calcium hydroxide and phosphoric acid

S Lazić, S Zec, N Miljević, S Milonjić - Thermochimica acta, 2001 - Elsevier
The effect of temperature on stoichiometry, morphology and crystallinity of hydroxyapatite
(HA) prepared from calcium hydroxide and phosphoric acid was investigated. The crystals …

A novel technique to synthesize hydroxyapatite at low temperature

TK Anee, M Ashok, M Palanichamy… - Materials Chemistry and …, 2003 - Elsevier
Hydroxyapatite (HAP), a well known biomaterial, was synthesized by a novel technique
using agarose gel in a high alkaline medium at a relatively low temperature 85° C. The XRD …

Hydroxyapatite synthesized by a simplified hydrothermal method

HS Liu, TS Chin, LS Lai, SY Chiu, KH Chung… - Ceramics …, 1997 - Elsevier
A simplified hydrothermal method of synthesizing hydroxyapatite powder is described.
Heating powders of Ca (OH) 2, Ca (H2PO4) 2· H2O and distilled water in a pressurized pot …

High temperature characteristics of synthetic hydroxyapatite

J Zhou, X Zhang, J Chen, S Zeng… - Journal of materials …, 1993 - Springer
The characteristics of synthetic hydroxyapatite sintered at high temperature were studied by
means of X-ray diffraction, infrared and differential thermal analysis, and thermogravimetric …

Calcium apatite prepared from calcium hydroxide and orthophosphoric acid

A Osaka, Y Miura, K Takeuchi, M Asada… - Journal of Materials …, 1991 - Springer
Calcium hydroxyapatite has been prepared due to a direct precipitation reaction between
0.3 m orthophosphoric acid solution and 0.1 mol calcium hydroxide dispersed in 200 ml …

Sol–gel processing of hydroxyapatite

A Jillavenkatesa, RA Condrate Sr - Journal of materials science, 1998 - Springer
Hydroxyapatite, a calcium phosphate-based compound with numerous applications in the
biological field was synthesized using the sol–gel processing route. The formation of …

Influence of process conditions on hydroxyapatite crystallinity obtained by direct crystallization

MM Seckler, M Danese, S Derenzo, JV Valarelli… - Materials …, 1999 - SciELO Brasil
Crystallization from solutions was applied to produce stoichiometric and crystalline
hydroxyapatite (HAP) suitable for use as a biomaterial. This was accomplished by keeping a …

The effects of citric and acetic acids on the formation of calcium-deficient hydroxyapatite at 38 C

KS Tenhuisen, PW Brown - Journal of Materials Science: Materials in …, 1994 - Springer
This study is concerned with the formation of calcium-deficient hydroxyapatite at
physiological temperature. Isothermal calorimetry, solution chemistry, scanning electron …

Natural hydroxyapatite—its behaviour during heat treatment

K Haberko, MM Bućko, J Brzezińska-Miecznik… - Journal of the European …, 2006 - Elsevier
Natural origin hydroxyapatite (HAp) was extracted from animal bones by their treatment with
hot NaOH solution. The remaining organic material oxidized in air atmosphere at moderate …

Hydrothermal conversion of calcite crystals to hydroxyapatite

M Yoshimura, P Sujaridworakun, F Koh… - Materials Science and …, 2004 - Elsevier
Hydroxyapatite (HAp) has been successfully synthesized by hydrothermal treatment of
calcite crystals in H3PO4 suspensions at 120 or 180° C. Synthesis of HAp crystals under …