The effect of temperature on sorbitan surfactant monolayers

被引：33

作者：

Peltonen, L ^{[1
]}

Hirvonen, J ^{[1
]}

Yliruusi, J ^{[1
]}

机构：

[1] Univ Helsinki, Dept Pharm, Pharmaceut Technol Div, FIN-00014 Helsinki, Finland

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2001年 / 239卷 / 01期

关键词：

sorbitan ester; surface pressure; temperature;

D O I：

10.1006/jcis.2001.7520

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effect of temperature on four sorbitan ester (Span 20, sorbitan monolaurate; Span 40, sorbitan monopalmitate; Span 60, sorbitan monostearate; and Span 80, sorbitan monooleate) monolayers was analyzed. The covered temperature range was from 22 to 42 degreesC. Surface pressure-molecular area isotherms were measured with a Langmuir-type instrument, As the temperature was increased, the monolayers expanded more. This change can also be seen from the surface compressional modulus that was lowered as the temperature was increased. Also, the collapse pressure was lowered as the temperature was increased. (C) 2001 Academic Press.

引用

页码：134 / 138

页数：5

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