Dynamic interfacial tension behavior of water/oil systems containing in situ-formed surfactants

被引:38
作者
Amaya, J [1 ]
Rana, D [1 ]
Hornof, V [1 ]
机构
[1] Univ Ottawa, Dept Chem Engn, Ottawa, ON K1N 6N5, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
dynamic interfacial tension; time-dependent interfacial tension; drop volume tensiometry; acidic oil; alkaline flooding; linoleic acid; lauric acid; n-dodecane;
D O I
10.1023/A:1015201119955
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
Time-dependent interfacial tension (IFT) has been investigated for an interfacially reactive immiscible system composed of model-acidified oil and alkaline water. The acidified oil was composed of either lauric acid or linoleic acid dissolved in n-dodecane. Drop volume tensiometry was employed to measure the interfacial tension between the two phases. In the case of lauric acid, the IFT value was found to decrease sharply with increasing alkali concentration, even at low drop formation times. In the case of linoleic acid, the IFT decrease with the drop formation time was more gradual, especially at low alkali concentration. The rate of formation of the interfacial area was also found to be dependent on alkali concentration.
引用
收藏
页码:139 / 148
页数:10
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