Effect of pressure on the adsorption and micelle formation of aqueous dodecyltrimethylammonium chloride solution-hexane system

Michio Yamanaka, Makoto Aratono, K. Motomura, R. Matuura

Research output: Contribution to journalArticle

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Abstract

The interfacial tension of aqueous dodecyltrimethylammonium chloride (DTAC) solution/hexane interface has been measured as a function of pressure at concentrations around the critical micelle concentration (CMC). The derivative of the interfacial tension with respect to pressure has been observed to change abruptly at the CMC as in the case of aqueous dodecylammonium chloride (DAC) solution-hexane system studied already. The volume changes associated with the adsorption of DTAC from its monomeric and micellar states have been calculated. The results have indicated that the micelle formation of surfactant is treated like the appearance of a new macroscopic phase in the system. It has also been concluded that the micelle solubilizing hexane bears resemblance to the adsorbed film in terms of the volume. The difference in the pressure dependence of the volume of micelle formation ΔνMW between DTAC and DAC has been attributed to a larger polar group of DTAC. The fact that the value of ΔνMW is larger than that estimated from the conductivity data has been explained by the solubilization of hexane into the micelle.

Original languageEnglish
Pages (from-to)338-341
Number of pages4
JournalColloid & Polymer Science
Volume262
Issue number4
DOIs
Publication statusPublished - Apr 1 1984

Fingerprint

Micelles
Hexanes
Hexane
micelles
chlorides
Adsorption
adsorption
Critical micelle concentration
Surface tension
interfacial tension
Surface-Active Agents
Surface active agents
bears
Derivatives
pressure dependence
dodecyltrimethylammonium
surfactants
conductivity
dodecylamine

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics
  • Materials Chemistry
  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

Cite this

Effect of pressure on the adsorption and micelle formation of aqueous dodecyltrimethylammonium chloride solution-hexane system. / Yamanaka, Michio; Aratono, Makoto; Motomura, K.; Matuura, R.

In: Colloid & Polymer Science, Vol. 262, No. 4, 01.04.1984, p. 338-341.

Research output: Contribution to journalArticle

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