Crystal Research and Technology
Cryst. Res. Technol. 38, 817 (2003) - Abstract -

FTIR spectroscopic, thermal and growth morphological studies of calcium hydrogen phosphate dihydrate crystals

Vimal S. Joshi, Mihir J. Joshi

Department of Physics, Saurashtra University, Rajkot – 360 005, India

Keywords thermogravimetry, kinetic parameters, thermodynamic parameters, morphology, calcium hydrogen phosphate dihydrate, crystals
PACS 61.10.Nz
DOI 10.1002/crat.200310100

Calcium hydrogen phosphate dihydrate (CHPD or DCPD) is found quite frequently in urinary calculi (stones). The CHPD crystals were grown by the single diffusion gel growth technique in sodium metasilicate gel. The crystals were found to be having platelet and broad needle type morphologies. The crystals were analyzed by FTIR spectroscopy. The thermal properties were studied by employing the thermogravimetric analysis. Various kinetic and thermodynamic parameters for dehydration were estimated. The selected platelet was studied by SEM for the growth morphologies indicating that the crystals grew in the form of leaflets having prominent (010) faces. This was in agreement with earlier reported studies.



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