Combinatorial entropy and the statistical mechanics of polydispersity

被引：101

作者：

Warren, PB ^{[1
]}

机构：

[1] Unilever Res Port Sunlight Lab, Wirral L63 3JW, Merseyside, England

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.80.1369

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A new method to treat statistical mechanics in a polydisperse system is described, applicable when the nonideal part of the free energy depends only on a few moments of a size distribution. A simple entropic contribution to the free energy is identified from combinatorial considerations. Although approximate in the general case, the method obtains the exact spinodal curve, critical points, cloud curve, and shadow curve. Polydisperse Flory-Huggins theory is treated as an example.

引用

页码：1369 / 1372

页数：4

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