GASEOUS MIXED ADSORBED FILMS OF OCTADECANOL AND CHOLESTEROL AT THE OIL-WATER INTERFACE

被引：9

作者：

MATUBAYASI, N ^{[1
]}

AZUMAYA, S ^{[1
]}

KANAYA, K ^{[1
]}

MOTOMURA, K ^{[1
]}

机构：

[1] KYUSHU UNIV 33,FAC SCI,DEPT CHEM,FUKUOKA 812,JAPAN

来源：

LANGMUIR | 1992年 / 8卷 / 08期

关键词：

D O I：

10.1021/la00044a017

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Gaseous/expanded and expanded/condensed phase transitions have been observed in adsorbed films of cholesterol at oil/water interfaces, while only the expanded/condensed phase transition has been observed in adsorbed films of octadecanol. To confirm that the octadecanol films do not exhibit the gaseous/expanded transition and to make clear the gaseous adsorbed film, the interfacial tension was measured in a dilute concentration region as a function of the total concentration and composition of the octadecanol-cholesterol mixture at 25-degrees-C. The result indicated that the gaseous films are expressed by the two-dimensional ideal gas law and the gaseous/expanded transition at oil/water interfaces cannot be observed for octadecanol. Further, the mixed adsorbed film was shown to be enriched with cholesterol which is more surface active than octadecanol.

引用

页码：1980 / 1983

页数：4

共 20 条

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