A Simple Calculation of Structural and Depletion Forces for Fluids/Suspensions Confined in a Film
A Simple Calculation of Structural and Depletion Forces for Fluids/Suspensions Confined in a Film
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DOI：
10.1021/la010047d
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发表时间：
2001-06
期刊：
影响因子：
3.9
通讯作者：
A. Trokhymchuk;D. Henderson;A. Nikolov;D. Wasan
中科院分区：
文献类型：
--
作者：
A. Trokhymchuk;D. Henderson;A. Nikolov;D. Wasan
利用两个大硬球在小硬球流体中的径向分布函数的拉普拉斯变换的解析结果，导出了由于结构力和损耗力引起的膜相互作用能和膜分离压力的简单方程。所提出的方程满足一些已知的精确结果，并明确表示的能量和压力的薄膜厚度和体积分数的小硬球的函数。对油膜能量和油膜分离压力的预测结果与现有的计算机模拟数据进行了比较。建议的简单的解析表达式可以应用于了解含有胶体颗粒的液体膜的稳定性和悬浮液，泡沫和乳液的稳定性。
By use of the analytic result for the Laplace transform of the radial distribution function for two large hard spheres dispersed in a fluid of the smaller hard spheres, simple equations for the film interaction energy and film disjoining pressure, due to the structural and depletion forces, are derived. The proposed equations satisfy some known exact results and explicitly express the energy and pressure as a function of the film thickness and volume fraction of the small hard spheres. The predicted results for the film energy and film disjoining pressure are compared with existing computer simulation data. The proposed simple analytical expressions can be applied to understand the stability of liquid films containing colloidal particles and the stability of suspensions, foams, and emulsions.