The effect of amphiphilic salts on the interface of two immiscible liquids

A. Vincze, G. Horvai, F. A M Leermakers

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Calculation of the thermodynamic characteristics of the interface of two immiscible electrolyte solutions (ITIES) was carried out using the self-consistent mean-field theory for adsorption and/or aggregation developed by Scheutjens and Fleer (1). The effect of tetraalkyl-ammonium-halogenid salts on the interfacial tension of 1,2-dichloro-ethane-water system was calculated for different alkyl groups, hence for different amphiphilic salts. For comparison, experimental determination of the interfacial tension was also carried out using a dynamic drop-weight method. It is found that the interfacial tension is significantly reduced due to the presence of the salts and the effect is larger for larger alkyl groups. Qualitative agreement was found between the calculated and the measured data. The model calculations showed also that the concentration of water near the interface may change non-monotonously.

Original languageEnglish
Pages (from-to)2875-2879
Number of pages5
JournalElectrochimica Acta
Volume40
Issue number18
DOIs
Publication statusPublished - 1995

Fingerprint

Surface tension
Salts
Liquids
Mean field theory
Water
Ethane
Ammonium Compounds
Electrolytes
Agglomeration
Thermodynamics
Adsorption
ethylene dichloride

Keywords

  • amphiphilic salts
  • immiscible liquids
  • interfacial tension
  • lattice model
  • SCF theory

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry

Cite this

The effect of amphiphilic salts on the interface of two immiscible liquids. / Vincze, A.; Horvai, G.; Leermakers, F. A M.

In: Electrochimica Acta, Vol. 40, No. 18, 1995, p. 2875-2879.

Research output: Contribution to journalArticle

Vincze, A. ; Horvai, G. ; Leermakers, F. A M. / The effect of amphiphilic salts on the interface of two immiscible liquids. In: Electrochimica Acta. 1995 ; Vol. 40, No. 18. pp. 2875-2879.
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