X-ray reflectivity measurements for freezing transitions of alkane wetting film on surfactant solution surface

Hiroki Matsubara, Tetsumasa Takaichi, Takanori Takiue, Hajime Tanida, Tomoya Uruga, Yohko F. Yano, Makoto Aratono

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3 Citations (Scopus)

Abstract

X-ray reflectivity measurements were applied to hexadecane wetting film on aqueous solutions of hexadecyltrimethylammonium bromide (CTAB) and tetradecyltrimethylammonium bromide (TTAB). In both cases, the monolayers in which oil molecules are penetrated from hexadecane droplets into surfactant-adsorbed films were found at room temperature. Upon cooling, they showed first-order freezing transitions, however, it was also confirmed that the structures of freezing films were qualitatively different: hexadecane molecules were frozen together with CTAB to form mixed solid monolayer in CTABhexadecane while the frozen hexadecane monolayer wetted mixed liquid monolayer in TTABhexadecane.

Original languageEnglish
Pages (from-to)492-496
Number of pages5
JournalBulletin of the Chemical Society of Japan
Volume86
Issue number4
DOIs
Publication statusPublished - Apr 26 2013

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All Science Journal Classification (ASJC) codes

  • Chemistry(all)

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