Thermodynamic Study on the Adsorption of 1-Octadecanol at Hexane/Water Interface

Norihiro Matubayasi, Kinsi Motomura, Makoto Aratono, Ryohei Matuura

研究成果: ジャーナルへの寄稿記事

74 引用 (Scopus)

抄録

The interfacial tension y between water and hexane solution of 1-octadecanol has been measured as functions of temperature T, pressure p, and mole fraction of 1-octadecanol in hexane x\ by the pendant drop method. The curves of y vs. T, y vs. p, and y vs. x\ show noticeable break points. Calculated thermodynamic quantities such as energy changes, entropy changes, and volume changes associated with the adsorption show the points of discontinuity at a certain temperature, pressure, and composition, corresponding to the above breaking points. It has been clarified that the first order phase transition between the expanded and condensed states takes place at the interface like that of monomolecular films spread on water surfaces. The expanded state is characterized by a relatively high energy, high entropy, and large volume, while the condensed state by low energy, low entropy, and small volume.

元の言語英語
ページ(範囲)2800-2803
ページ数4
ジャーナルBulletin of the Chemical Society of Japan
51
発行部数10
DOI
出版物ステータス出版済み - 1 1 1978

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Hexanes
Entropy
Thermodynamics
Adsorption
Water
Surface tension
Monolayers
Phase transitions
Temperature
Chemical analysis
stearyl alcohol

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

これを引用

Thermodynamic Study on the Adsorption of 1-Octadecanol at Hexane/Water Interface. / Matubayasi, Norihiro; Motomura, Kinsi; Aratono, Makoto; Matuura, Ryohei.

:: Bulletin of the Chemical Society of Japan, 巻 51, 番号 10, 01.01.1978, p. 2800-2803.

研究成果: ジャーナルへの寄稿記事

Matubayasi, Norihiro ; Motomura, Kinsi ; Aratono, Makoto ; Matuura, Ryohei. / Thermodynamic Study on the Adsorption of 1-Octadecanol at Hexane/Water Interface. :: Bulletin of the Chemical Society of Japan. 1978 ; 巻 51, 番号 10. pp. 2800-2803.
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