Ultralow interfacial tension in the vicinity of the upper critical solution temperature of the mixture of water and isobutyric acid

Makoto Aratono, Kinsi Motomura

研究成果: ジャーナルへの寄稿記事

2 引用 (Scopus)

抄録

The ultralow interfacial tension of the binary liquid mixture of water and isobutyric acid has been measured as a function of temperature under atmospheric pressure in the vicinity of the upper critical solution temperature. It has been observed that the interfacial tension decreases monotonously as the temperature increases and is reduced to zero at the critical solution temperature. The results have been analyzed on the basis of the thermodynamics of interfaces. It has been found that the formation of interface is accompanied by increases in entropy and energy, which vanish at the critical solution temperature. This behavior has been considered in terms of the partial molar thermodynamic quantities of components. The brief discussion of the critical exponent has been also given for the present system.

元の言語英語
ページ(範囲)3205-3209
ページ数5
ジャーナルBulletin of the Chemical Society of Japan
58
発行部数11
DOI
出版物ステータス出版済み - 11 1 1985

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Surface tension
Water
Temperature
Thermodynamics
Atmospheric pressure
Entropy
isobutyric acid
Liquids

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

これを引用

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T1 - Ultralow interfacial tension in the vicinity of the upper critical solution temperature of the mixture of water and isobutyric acid

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N2 - The ultralow interfacial tension of the binary liquid mixture of water and isobutyric acid has been measured as a function of temperature under atmospheric pressure in the vicinity of the upper critical solution temperature. It has been observed that the interfacial tension decreases monotonously as the temperature increases and is reduced to zero at the critical solution temperature. The results have been analyzed on the basis of the thermodynamics of interfaces. It has been found that the formation of interface is accompanied by increases in entropy and energy, which vanish at the critical solution temperature. This behavior has been considered in terms of the partial molar thermodynamic quantities of components. The brief discussion of the critical exponent has been also given for the present system.

AB - The ultralow interfacial tension of the binary liquid mixture of water and isobutyric acid has been measured as a function of temperature under atmospheric pressure in the vicinity of the upper critical solution temperature. It has been observed that the interfacial tension decreases monotonously as the temperature increases and is reduced to zero at the critical solution temperature. The results have been analyzed on the basis of the thermodynamics of interfaces. It has been found that the formation of interface is accompanied by increases in entropy and energy, which vanish at the critical solution temperature. This behavior has been considered in terms of the partial molar thermodynamic quantities of components. The brief discussion of the critical exponent has been also given for the present system.

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