Interfacial tension and wetting behavior of air/oil/ionic liquid systems

Takashi Matsuda, Yu Mishima, Saeid Azizian, Hiroki Matsubara, Takanori Takiue, Makoto Aratono

研究成果: ジャーナルへの寄稿学術誌査読

19 被引用数 (Scopus)


We measured the interfacial tension and the density of air/n-hexane, n-decane, 1-perfluorohexane/1-hexyl-3-methyl-imidazolium hexafluorophosphate systems as a function of temperature. From the air/ionic liquid surface tension values, it was suggested that Coulombic interaction between imidazolium cations and counter anions are not so much different between the surface and bulk. The density values indicated that the decrease of surface tension by saturating organics was closely correlated to the mutual solubility between ionic liquid and organics. Interfacial tension at the oil/ionic liquid interfaces suggested that ionic liquid molecules were more ordered at the oil/ionic liquid interfaces compared to the air/ionic liquid interfaces, but the decrease of the entropy due to the interfacial orientation of ionic liquid was compensated by the increase of the entropy due to the contact of different chemical species. The initial spreading coefficients and the Hamaker constants indicated that all the oil phases spread at the air/ionic liquid interfaces spontaneously, and form the complete wetting films.

ジャーナルColloid and Polymer Science
出版ステータス出版済み - 11月 1 2007

!!!All Science Journal Classification (ASJC) codes

  • 物理化学および理論化学
  • ポリマーおよびプラスチック
  • コロイド化学および表面化学
  • 材料化学


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