TY - JOUR
T1 - The influence of surfactants on the crystallization of calcium oxalate hydrates
AU - Fredi-Milhofer, Helga
AU - Tunik, Leonid
AU - Bloch, Raphael
AU - Garti, Nissim
PY - 1994/6/1
Y1 - 1994/6/1
N2 - The influence of sodium dodecyl sulphate, SDS, dodecyl ammonium chloride, DDACI and octaethylene glycol mono-n-hexadecyl ether, C16EO8, on the crystallization of calcium oxalate from 0.3 molar sodium chloride solutions is discussed. Under the given experimental conditions the thermodynamically stable monohydrate, COM was the predominant crystal form. Both ionic surfactants inhibited growth and aggregation of COM and, by preferential adsorption at different crystal faces, induced different habit modifications. In addition, micellar solutions of SDS promoted crystallization of the metastable calcium oxalate dihydrate, COD. The nonionic surfactant, C16gEO8, stimulated nucleation and/or initial crystal growth of COM, most probably by providing active centers for heterogeneous nucleation.
AB - The influence of sodium dodecyl sulphate, SDS, dodecyl ammonium chloride, DDACI and octaethylene glycol mono-n-hexadecyl ether, C16EO8, on the crystallization of calcium oxalate from 0.3 molar sodium chloride solutions is discussed. Under the given experimental conditions the thermodynamically stable monohydrate, COM was the predominant crystal form. Both ionic surfactants inhibited growth and aggregation of COM and, by preferential adsorption at different crystal faces, induced different habit modifications. In addition, micellar solutions of SDS promoted crystallization of the metastable calcium oxalate dihydrate, COD. The nonionic surfactant, C16gEO8, stimulated nucleation and/or initial crystal growth of COM, most probably by providing active centers for heterogeneous nucleation.
UR - http://www.scopus.com/inward/record.url?scp=0028697995&partnerID=8YFLogxK
U2 - 10.1080/10587259408027180
DO - 10.1080/10587259408027180
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AN - SCOPUS:0028697995
SN - 1058-725X
VL - 248
SP - 199
EP - 206
JO - Molecular Crystals and Liquid Crystals
JF - Molecular Crystals and Liquid Crystals
IS - 1
ER -