MECHANISMS FOR LOWERING OF INTERFACIAL-TENSION IN ALKALI ACIDIC OIL SYSTEMS .2. THEORETICAL-STUDIES

被引：70
|
作者：
RUDIN, J [1 ]
WASAN, DT [1 ]
机构：
[1] IIT,DEPT CHEM ENGN,CHICAGO,IL 60616
来源：
COLLOIDS AND SURFACES | 1992年 / 68卷 / 1-2期
关键词：
ALKALI ACIDIC OIL INTERACTIONS; EQUILIBRIUM INTERFACIAL TENSION; MICELLIZATION;
D O I：
10.1016/0166-6622(92)80149-V
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：
A new interfacial activity model has been developed to predict, qualitatively as well as quantitatively, the equilibrium interfacial tension of alkali/acidic oil systems. The model accounts for a mixed interfacial layer and mixed micelle formation by ionized and unionized acid. Comparison of the model with experiments confirms the mechanisms proposed in Part 1 of this series. It has been found that interfacial tension goes through a minimum with pH at constant ionic strength. The ultralow value of interfacial tension is shown to result from the simultaneous adsorption of ionized and unionized acid upon the interface, and the lowering results from the formation of mixed micelles of ionized and unionized acid.
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页码：81 / 94
页数：14
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