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FTIR spectroscopic, thermal and growth morphological studies of calcium hydrogen phosphate dihydrate crystals
Author(s) -
Joshi Vimal S.,
Joshi Mihir J.
Publication year - 2003
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.200310100
Subject(s) - thermogravimetric analysis , fourier transform infrared spectroscopy , chemistry , diffusion , dehydration , phosphate , calcium , thermal analysis , infrared spectroscopy , nuclear chemistry , crystallography , chemical engineering , thermal , organic chemistry , biochemistry , thermodynamics , physics , engineering
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. (© 2003 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)