Spinodal Composition of the System Water?+?Chloroform?+ Acetic Acid at 25?¡ãC

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• 作者：Florin D. Buzatu ; Radu P. Lungu ; Daniela Buzatu ; Roberto Sartorio and Luigi Paduano
• 关键词：Ternary amphiphilic solution ; Spinodal curve ; Molecular lattice model ; Ising model
• 刊名：Journal of Solution Chemistry
• 出版年：2009
• 出版时间：April, 2009
• 年：2009
• 卷：38
• 期：4
• 页码：403-415
• 全文大小：381.0 KB

文摘

A theoretical spinodal curve for the system water + chloroform + acetic acid at 25 ¡ãC is derived using a lattice model for ternary amphiphilic solutions: rod-like molecules covering the bonds of the honeycomb lattice with three-body interactions between the molecular ends associated to the same lattice site. The molecular model is equivalent to the standard Ising model on the same lattice; its mean-field solution is the most appropriate for reproducing, by local fitting, the experimental data for the binodal composition. The derived spinodal curve is in very good agreement with the spinodal composition determined also in the present work from the measured diffusion coefficients recently reported for the same system.