title: Line tension and wetting behavior of an air/hexadecane/aqueous surfactant system.
abstract: The line tension of an air/hexadecane/aqueous solution of an dodecyltrimethylammonium bromide (DTAB) system was measured as a function of the molality of DTAB at 298.15 K by means of a newly constructed apparatus. It was estimated to be on the order of 10(-10)-10(-12) N, which is comparable to the theoretical estimation. Furthermore, its sign was reversed from positive to negative in the vicinity of the wetting transition concentration. The reversal of the sign was examined on the basis of our experimental findings on the wetting transition and the theory of Indekeu.
authors.affiliation: Department of Chemistry and Physics of Condensed Matter, Graduate School of Sciences, Kyushu University, Fukuoka 812-8581, Japan. y-takscc@mbox.nc.kyushu-u.ac.jp
authors.forename: Youichi
authors.initials: Y
authors.lastname: Takata
authors.forename: Hiroki
authors.initials: H
authors.lastname: Matsubara
authors.forename: Yoshimori
authors.initials: Y
authors.lastname: Kikuchi
authors.forename: Norihiro
authors.initials: N
authors.lastname: Ikeda
authors.forename: Takashi
authors.initials: T
authors.lastname: Matsuda
authors.forename: Takanori
authors.initials: T
authors.lastname: Takiue
authors.forename: Makoto
authors.initials: M
authors.lastname: Aratono
mesh_terms: D000388:Air; D000473:Alkanes / Q000737:chemistry*; D000644:Quaternary Ammonium Compounds / Q000737:chemistry*; D012996:Solutions / Q000737:chemistry; D013499:Surface Properties; D013501:Surface-Active Agents / Q000737:chemistry*; D013696:Temperature; D013718:Tensile Strength; D014867:Water / Q000737:chemistry; D017155:Wettability
chemical_list: D000473:Alkanes; D000644:Quaternary Ammonium Compounds; D012996:Solutions; D013501:Surface-Active Agents; D014867:Water; C007932:n-hexadecane; C022806:dodecyltrimethylammonium