MODELING OF THE SURFACE TENSION OF COLLOIDAL SUSPENSIONS

被引：7

作者：

Hadidimasouleh, Roghayeh ^{[1
]}

Yaghmaee, Maziar Sahba ^{[1
]}

Riahifar, Reza ^{[1
]}

Raissi, Babak ^{[1
]}

机构：

[1] Mat & Energy Res Ctr, Ceram Dept, Electroceram Grp, POB 14155-4777, Tehran, Iran

来源：

SURFACE REVIEW AND LETTERS | 2017年 / 24卷 / 04期

关键词：

Laplace pressure; colloid; contact angle; surface tension; PARTICLES; NANOPARTICLES; WETTABILITY; ADSORPTION; FORCES;

D O I：

10.1142/S0218625X17500500

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 is one of the fundamental properties of the colloids, which can be altered by concentration and size of colloidal particles. In the current work, modeling of the surface tension of suspension as it would be analyzed by maximum bubble pressure method has been performed. A new modified equation to correlate the surface tension with the bubble pressure is derived by applying fundamental thermodynamic relation considering the presence of particles in suspension and curvature of the interface between the particles and bubbles inside liquid. Moreover, the change of particles concentration in air-water interface due to capillary force is also considered. The predicted surface tension using the developed model has been verified by numerous experimental data with deviation less than 5% in most of cases. It was found that the calculated surface tension is altered by contact angle and particle radius as well as particle concentration. The obtained model may have potential application to predict the surface tension of colloidal suspension.

引用

页数：9

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