Adsorption of cationic surfactants on silica surface: 2. Comparison of theory with experiment

T.P. Goloub, L.K. Koopal

Research output: Contribution to journalArticleAcademicpeer-review

5 Citations (Scopus)

Abstract

Possible application of the SCFA lattice model to describe the adsorption of ionic surfactants on the surface whose charge and potential can be changed under the effect of adsorbing surfactant was theoretically studied. Calculated isotherms of surfactant adsorption were compared with experimental adsorption isotherms of dodecylpyridinium chloride on silica. It was shown that, upon the adsorption of cationic surfactants on SiO2, the ionization of silanol surface groups is enhanced and the surface charge increases. The used set of parameters suggesting the interaction between the aliphatic tails of surfactant molecules and the surface made it possible to reach good agreement with the experiment.
Original languageEnglish
Pages (from-to)44-47
JournalColloid Journal
Volume66
Issue number1
DOIs
Publication statusPublished - 2004

Fingerprint

Cationic surfactants
Surface-Active Agents
Silicon Dioxide
Surface active agents
surfactants
Silica
silicon dioxide
Adsorption
adsorption
Surface charge
Experiments
isotherms
Surface potential
Adsorption isotherms
Ionization
Isotherms
Molecules
chlorides
ionization
molecules

Keywords

  • general isotherm equation
  • solid liquid interfaces

Cite this

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Adsorption of cationic surfactants on silica surface: 2. Comparison of theory with experiment. / Goloub, T.P.; Koopal, L.K.

In: Colloid Journal, Vol. 66, No. 1, 2004, p. 44-47.

Research output: Contribution to journalArticleAcademicpeer-review

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T1 - Adsorption of cationic surfactants on silica surface: 2. Comparison of theory with experiment

AU - Goloub, T.P.

AU - Koopal, L.K.

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N2 - Possible application of the SCFA lattice model to describe the adsorption of ionic surfactants on the surface whose charge and potential can be changed under the effect of adsorbing surfactant was theoretically studied. Calculated isotherms of surfactant adsorption were compared with experimental adsorption isotherms of dodecylpyridinium chloride on silica. It was shown that, upon the adsorption of cationic surfactants on SiO2, the ionization of silanol surface groups is enhanced and the surface charge increases. The used set of parameters suggesting the interaction between the aliphatic tails of surfactant molecules and the surface made it possible to reach good agreement with the experiment.

AB - Possible application of the SCFA lattice model to describe the adsorption of ionic surfactants on the surface whose charge and potential can be changed under the effect of adsorbing surfactant was theoretically studied. Calculated isotherms of surfactant adsorption were compared with experimental adsorption isotherms of dodecylpyridinium chloride on silica. It was shown that, upon the adsorption of cationic surfactants on SiO2, the ionization of silanol surface groups is enhanced and the surface charge increases. The used set of parameters suggesting the interaction between the aliphatic tails of surfactant molecules and the surface made it possible to reach good agreement with the experiment.

KW - general isotherm equation

KW - solid liquid interfaces

U2 - 10.1023/B:COLL.0000015054.70957.55

DO - 10.1023/B:COLL.0000015054.70957.55

M3 - Article

VL - 66

SP - 44

EP - 47

JO - Colloid Journal

JF - Colloid Journal

SN - 1061-933X

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