Effects of Organic Additives on the Morphology of Various Calcium Phosphates Prepared via Solution and Emulsion Methods

Dicalcium phosphate anhydrous (DCPA) and dicalcium phosphate dihydrate (DCPD) particles were prepared through the reaction between calcium nitrate and dipotassium hydrogen phosphate in a solution and a multiple emulsion. Organic compounds were added into the phosphate solution with the aim of modify...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2011, Vol.18 (19), p.1-4
Main Authors: Kimura, I, Wei, T, Kikushima, Y, Riman, R, Akazawa, T
Format: Article
Language:English
Subjects:
Additives
Calcium nitrate
Calcium phosphate
Calcium phosphates
Crystal structure
Emulsions
Microspheres
Morphology
Organic compounds
Phosphates
Surfactants
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Summary:Dicalcium phosphate anhydrous (DCPA) and dicalcium phosphate dihydrate (DCPD) particles were prepared through the reaction between calcium nitrate and dipotassium hydrogen phosphate in a solution and a multiple emulsion. Organic compounds were added into the phosphate solution with the aim of modifying the morphology. Large parallelogrammic particles of DCPD were obtained with no additive. By adding 2-aminoethanol, the product was changed to rhombic in shape and reduced to one-twentieth in size, and the phase was DCPA. In the multiple emulsion, microspheres composed of DCPA were prepared. They were constructed by flaky, primary particles. The crystalline phase and morphology were affected by the concentrations of surfactants in the oil and outer aqueous phases.
ISSN:1757-899X
1757-8981
1757-899X
DOI:10.1088/1757-899X/18/19/192017