SURFACE-ACTIVITY OF AMPHIPHILES IN HYDROGEN-FLUORIDE - WATER SOLUTIONS

被引：9
|
作者：
ROTH, U
PAULUS, O
MENYES, U
机构：
[1] Fachbereich Chemie Abteilung für Technische Chemie, Ernst-Moritz-Arndt-Universität, Greifswald, 17489
来源：
COLLOID AND POLYMER SCIENCE | 1995年 / 273卷 / 08期
关键词：
HYDROGEN FLUORIDE; SURFACE TENSION; MICELLE; SURFACTANT; CMC;
D O I：
10.1007/BF00658760
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：
Surface tension measurements were carried out in surfactant - hydrofluoric acid - water systems and surfactant - anhydrous hydrofluoric acid systems. Surface tension measurements show that surfactants in anhydrous hydrofluoric acid do not effect a detectable change in surface tension. Effects, known from other solvents, can only be observed when water addition takes place. The surface tension lowering, the free standard adsorption energy, and the maximum surface concentration of a surfactant increases with decreasing hydrofluoric acid concentrations. The space requirement of a separate surfactant molecule decreases at the phase border with decreasing hydrofluoric acid concentrations of the solvents. Simultaneously, the CMC values were changed to smaller surfactant concentrations.
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页码：800 / 806
页数：7
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