ISOTROPIC-NEMATIC PHASE-SEPARATION OF A DISPERSION OF ORGANOPHILIC BOEHMITE RODS

被引：154

作者：

BUINING, PA

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 / 44期

关键词：

D O I：

10.1021/j100146a027

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：

An isotropic-nematic phase separation is observed in dispersions of sterically stabilized rodlike boehmite particles. The phase separation process is studied with polarization microscopy. Also, the phase volumes and particle concentrations in the coexisting phases are determined. The dependence of these quantities on the total concentration of the dispersion is analyzed in terms of the Onsager theory for the isotropic-nematic phase transition extended to bidisperse mixtures of rodlike particles. Qualitative agreement between theory and experiment is obtained. The triphasic isotropic-nematic-nematic equilibrium as predicted by the theory is observed after 6 months.

引用

页码：11510 / 11516

页数：7

共 28 条

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