Study on line tension of air/hexadecane/aqueous surfactant system

Youichi Takata, Hiroki Matsubara, Takashi Matsuda, Yoshimori Kikuchi, Takanori Takiue, Bruce Law, Makoto Aratono

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

We measured the line tension of the air/hexadecane/aqueous solution of the dodecyltrimethylammonium bromide (DTAB) system as a function of the molality of DTAB aqueous solution at 298.15 K. The experimental values of the line tension were 10-10 to 10-12N, and they coincided with the theoretical estimates. Furthermore, it was found that the line tension changes in sign from positive to negative at around 0.750 mmol kg-1. This concentration is close to the point of transition from partial to frustrated-complete wetting. Taking into account the profiles of the free energy of the air/water surface, previously developed by Indekeu to understand the interrelationship between the wetting transition and line tension, it is suggested that the sign reversal of the line tension can be attributed to the transition from partial to frustrated-complete wetting.

Original languageEnglish
Pages (from-to)647-654
Number of pages8
JournalColloid and Polymer Science
Volume286
Issue number6-7
DOIs
Publication statusPublished - Jun 1 2008

All Science Journal Classification (ASJC) codes

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

Fingerprint Dive into the research topics of 'Study on line tension of air/hexadecane/aqueous surfactant system'. Together they form a unique fingerprint.

Cite this