First-order wetting transition and line tension of hexadecane lens at air/water interface assisted by surfactant adsorption

Hiroki Matsubara, Yosuke Ikebe, Yasutaka Ushijima, Youichi Takata, Takanori Takiue, Makoto Aratono

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

A first-order transition from partial wetting to pseudo-partial wetting of hexadecane droplets on aqueous solutions of surfactant, hexadecyltrimethylammonium bromide, has been investigated by using interfacial tensiometry and ellipsometry. A regular solution model was applied to calculate the surface free energy of the wetting film as a function of thickness and then the connection between calculated surface free energy profiles and line tension measured at the wetting transition was discussed based on the interface displacement model. The reversal of the sign of the line tension associated with the wetting transition was confirmed from both the experiment and the interface displacement model.

Original languageEnglish
Pages (from-to)1198-1202
Number of pages5
JournalBulletin of the Chemical Society of Japan
Volume83
Issue number10
DOIs
Publication statusPublished - Oct 29 2010

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Surface-Active Agents
Wetting
Lenses
Adsorption
Water
Air
Free energy
Ellipsometry
n-hexadecane
Experiments

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

Cite this

First-order wetting transition and line tension of hexadecane lens at air/water interface assisted by surfactant adsorption. / Matsubara, Hiroki; Ikebe, Yosuke; Ushijima, Yasutaka; Takata, Youichi; Takiue, Takanori; Aratono, Makoto.

In: Bulletin of the Chemical Society of Japan, Vol. 83, No. 10, 29.10.2010, p. 1198-1202.

Research output: Contribution to journalArticle

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