Adsorption thin-layer chromatography and viscometry of polystyrenes in solvent mixtures

被引：10

作者：

Litvinova, L ^{[1
]}

Bel'nikevich, N ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Macromol Cpds, St Petersburg 199004, Russia

来源：

JOURNAL OF CHROMATOGRAPHY A | 2003年 / 1005卷 / 1-2期

关键词：

viscometry; hydrodynamic volume; intramolecular interactions; polystyrenes;

D O I：

10.1016/S0021-9673(03)00844-6

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

The effect of the thermodynamic quality of solvent mixtures on the adsorption behavior of macromolecules under dynamic conditions was investigated. The chromatographic behavior of polystyrenes (PSs) in various mixed eluents was studied under conditions of adsorption and size-exclusion thin-layer chromatography as well as at the exclusion-adsorption transition point with silica gel KSKG adsorbent. The thermodynamic quality of the solvent mixtures used in the chromatographic experiments was determined viscometrically. The dependences of the intrinsic viscosity of PSs on solvent composition for solvent-non-solvent, two solvents, and theta-solvent-solvent mixtures were obtained. A correlation was found between Snyder's polarity indices for the solvent mixtures used in polymer chromatography under "critical conditions" and the intrinsic viscosity values of PSs in the same mixtures. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：165 / 176

页数：12

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