THEORY OF THE ISOTROPIC NEMATIC NEMATIC PHASE-SEPARATION FOR A SOLUTION OF BIDISPERSE RODLIKE PARTICLES

被引：129

作者：

VROEGE, GJ

LEKKERKERKER, HNW

机构：

[1] Van't Hoff Laboratory, University of Utrecht, 3584 CH Utrecht

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1993年 / 97卷 / 14期

关键词：

D O I：

10.1021/j100116a026

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：

Nematic-nematic phase equilibria and an isotropic-nematic-nematic triple point are located in the phase diagram of a bidisperse solution of rigid hard rods. To this end, the formulation of the Onsager second virial theory for bidisperse systems using Gaussian trial functions is applied. It appears that-within this approximation-the nematic-nematic transition is not caused by excluded-volume effects but by a balance between orientational entropy and entropy of mixing. Below a length ratio of 3.167 there is only a simple isotropic-nematic transition present.

引用

页码：3601 / 3605

页数：5

共 20 条

[11]

KHOKHLOV AR, 1991, LIQUID CRYSTALLINITY

[12] ON THE ISOTROPIC-LIQUID CRYSTAL PHASE-SEPARATION IN A SOLUTION OF RODLIKE PARTICLES OF DIFFERENT LENGTHS [J].