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Relation between adsorption of some anionic surfactants on barite and solution/air interfaces
Author(s) -
Omar A. M. A.,
Azzam E. M. S.
Publication year - 2003
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.1593
Subject(s) - pulmonary surfactant , adsorption , chemistry , hydrocarbon , chemical engineering , sorption isotherm , inorganic chemistry , organic chemistry , biochemistry , engineering
The adsorption behaviour of synthesized anionic surfactants with chemical structure RO–Ph–NN–Ph–X, where R is octyl, dodecyl or cetyl and X is SO 3 Na, was analysed. Analysis of the behaviour of the surfactants was made using a modified version of the Frumkin adsorption isotherm. The values of thermodynamic parameters were calculated at the solution/air interface. The relation between adsorption of the surfactants at the solution/air interface and solid/liquid interface was investigated. The surface properties of these synthetic surfactants were studied. The results show that the length of the hydrocarbon chain of these surfactants plays a major role in determining the surface and thermodynamic properties. The results also indicate that there is a good relationship between effectiveness of adsorption of the surfactant and its efficiency as a collector. Copyright © 2003 John Wiley & Sons, Ltd.