Adsorption Behavior of Propylammonium Chloride and Hexylammonium Chloride Mixture at Water/Air Interface

Hitoshi Matsuki, Norihiro Ikeda, Makoto Aratono, Shoji Kaneshina, Kinsi Motomura

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The adsorption behavior of a mixture of propylammonium chloride (PAC) and hexylammonium chloride (HAC) at the water/air interface was investigated by measuring the surface tension of the aqueous solution as a function of the total molality of PAC and HAC and the mole fraction of HAC in the total salt at 298.15 K under atmospheric pressure. The total surface density of the mixture and the composition of HAC in the adsorbed film were evaluated by using thermodynamic equations derived previously. The HAC molecules were seen to be adsorbed predominantly by the water/air interface. The composition of HAC in the adsorbed film was observed to have a larger value than unity in a region where the mole fraction of HAC in the aqueous solution was large. It was proved that such peculiar behavior is attributable to the negative adsorption of PAC in the adsorbed film, that is, the expulsion of the PAC molecules from the interface by the HAC molecules adsorbed. Further, the thermodynamic equations of mixed adsorbed films were concluded to be applicable not only to the mixed systems of surfactants but to those of various kinds of substances.

Original languageEnglish
Pages (from-to)201-204
Number of pages4
JournalJournal of Colloid And Interface Science
Volume160
Issue number1
DOIs
Publication statusPublished - Oct 1 1993

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Chlorides
Adsorption
Water
Air
Molecules
Thermodynamics
Chemical analysis
Atmospheric pressure
Surface tension
Surface active agents
Salts
Surface-Active Agents

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry

Cite this

Adsorption Behavior of Propylammonium Chloride and Hexylammonium Chloride Mixture at Water/Air Interface. / Matsuki, Hitoshi; Ikeda, Norihiro; Aratono, Makoto; Kaneshina, Shoji; Motomura, Kinsi.

In: Journal of Colloid And Interface Science, Vol. 160, No. 1, 01.10.1993, p. 201-204.

Research output: Contribution to journalArticle

Matsuki, Hitoshi ; Ikeda, Norihiro ; Aratono, Makoto ; Kaneshina, Shoji ; Motomura, Kinsi. / Adsorption Behavior of Propylammonium Chloride and Hexylammonium Chloride Mixture at Water/Air Interface. In: Journal of Colloid And Interface Science. 1993 ; Vol. 160, No. 1. pp. 201-204.
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