Electrical Properties of Silicone Oil-Water Interface in the Presence of Ionic Surfactants and Salt: Importance in the Stability of Oil-in-Water Emulsions

被引：13
|
作者：
Sainath, Krishnamurthy [1 ]
Ghosh, Pallab [2 ]
机构：
[1] BMS Coll Engn, Dept Chem Engn, Bangalore, Karnataka, India
[2] Indian Inst Technol, Dept Chem Engn, Gauhati 781039, Assam, India
来源：
CHEMICAL ENGINEERING COMMUNICATIONS | 2014年 / 201卷 / 12期
关键词：
Adsorption; Coagulation; Drops; Emulsions; Interfacial phenomena; Surfactants; FLUID INTERFACES; ADSORPTION; COALESCENCE; EQUILIBRIUM; BEHAVIOR; BINDING; CHARGE; PHASE;
D O I：
10.1080/00986445.2013.823543
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Silicone oil emulsions are used in a variety of industries. Electrical properties of the oil-water interface play a very important role in the stability of these emulsions. This work reports studies on the stability of silicone oil-water emulsions in the presence of ionic surfactants and salt. It was found that the addition of salt has a profound effect on the electrical properties of the interface. The kinetics of the growth of oil droplets in the emulsion was studied in emulsions containing a low volume fraction of silicone oil. The growth of droplets followed second-order kinetics commensurate with binary coalescence of droplets. It was found that the surfactant concentration and the presence of salt had a significant effect on the size of the droplets as well as their rate of growth. The stability of emulsions was correlated with the electrical properties of the oil-water interface and adsorption of surfactant molecules at the interface.
引用
收藏
页码：1645 / 1663
页数：19
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