Relation between adsorption of some anionic surfactants on barite and solution/air interfaces | Zendy

Omar A. M. A. | Zendy; Azzam E. M. S. | Zendy

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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.

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