Effect of Oxyethylene Groups of Fatty Alcohol Polyoxyethylene Ether Sodium Sulfates on Equilibrium and Dynamic Surface Tension in Relation to Wetting Properties

被引:3
|
作者
Ren, Xiaodan [1 ]
Li, Ping [1 ]
Li, Jianbo [1 ]
Yang, Xiaoyi [1 ]
Guo, Chaohua [1 ]
Li, Quanhong [1 ]
机构
[1] China Res Inst Daily Chem Co Ltd, Taiyuan 030001, Shanxi, Peoples R China
关键词
surfactant adsorption; diffusivity coefficient; dynamic surface tension; wetting property; ADSORPTION BEHAVIOR;
D O I
10.1515/tsd-2020-2343
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
The effect of hydrophilic chain of surfactants fatty alcohol polyoxyethylene ether sodium sulphates (AEnS, n = 2, 3, 7) on surface properties and wetting properties was investigated by the measurement of equilibrium surface tension, dynamic surface tension and dynamic contact angle. The fatty alcohol polyoxyethylene ether sodium sulphates with different head group sizes were used. From the results of equilibrium surface tension measurements, we could obtain the critical micellisation concentration, adsorption efficiency, maximum surface excess concentration and Langmuir equilibrium adsorption constant at air/liquid interface. The dynamic surface tension results showed that the adsorption of aqueous solutions at the air/liquid interface follows a mixed-diffusion kinetic adsorption mechanism. In conclusion, for both studied surfactant, the longer the oxyethylene chains, the higher the maximum rate of surface tension reduction, the higher the diffusivity and wetting properties in terms of contact angle.
引用
收藏
页码:394 / 400
页数:7
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