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

[1]

ABE A, 1991, LIQUID CRYSTALLLINIT

[2] A MODEL FOR THE FREEZING OF BINARY COLLOIDAL HARD-SPHERES [J].

BARTLETT, P .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1990, 2 (22) :4979-4989

[3] STATISTICAL THERMODYNAMICS OF MIXTURES OF RODLIKE PARTICLES .1. THEORY FOR POLYDISPERSE SYSTEMS [J].

FLORY, PJ ;

ABE, A .

MACROMOLECULES, 1978, 11 (06) :1119-1122

[4]

FLORY PJ, 1984, ADV POLYM SCI, V59, P1

[5] STATISTICAL THERMODYNAMICS OF SEMI-FLEXIBLE CHAIN MOLECULES [J].

FLORY, PJ .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1956, 234 (1196) :60-73

[6] PHASE EQUILIBRIA IN SOLUTIONS OF ROD-LIKE PARTICLES [J].

FLORY, PJ .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1956, 234 (1196) :73-89

[7] MULTI-PHASE EQUILIBRIUM IN AQUEOUS-SOLUTIONS OF THE TRIPLE-HELICAL POLYSACCHARIDE, SCHIZOPHYLLAN [J].

ITOU, T ;

TERAMOTO, A .

POLYMER JOURNAL, 1984, 16 (10) :779-790

[8] TRIPHASE EQUILIBRIUM IN AQUEOUS-SOLUTIONS OF THE RODLIKE POLYSACCHARIDE SCHIZOPHYLLAN [J].

ITOU, T ;

TERAMOTO, A .

MACROMOLECULES, 1984, 17 (07) :1419-1420

[9]

KAJIWARA K, 1986, MAKROMOL CHEM, V187, P2883

[10] ON THE THEORY OF LIQUID-CRYSTALLINE ORDERING OF POLYMER-CHAINS WITH LIMITED FLEXIBILITY [J].

KHOKHLOV, AR ;

SEMENOV, AN .

JOURNAL OF STATISTICAL PHYSICS, 1985, 38 (1-2) :161-182

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