PREFERENTIAL ADSORPTION ONTO POLYSTYRENE IN MIXED-SOLVENT SYSTEMS

被引：103

作者：

AMINABHAVI, TM ^{[1
]}

MUNK, P ^{[1
]}

机构：

[1] UNIV TEXAS,DEPT CHEM,AUSTIN,TX 78712

来源：

MACROMOLECULES | 1979年 / 12卷 / 04期

关键词：

D O I：

10.1021/ma60070a012

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A previously developed technique using the ultracentrifuge as a differential refractometer has been modified and applied for the evaluation of preferential adsorption onto polymers. Three polystyrene samples in two combinations of solvent mixtures, benzene (1)-cyclohexane (2) and ethyl acetate (1)-cyclohexane (2), were measured over the entire range of composition of the solvent mixture. Semiempirical relations were developed for the binary solvent interaction parameter, g12 as a function of temperature and solvent composition. The experimental results are discussed in relation to preferential adsorption, thermodynamical interaction parameters, and excess free energy of mixing of the two liquid components. The results confirmed and refined the conclusions drawn from sedimentation equilibrium experiments for the same experimental system. © 1979, American Chemical Society. All rights reserved.

引用

页码：607 / 613

页数：7

共 11 条

[1]

Boublik T., 1973, VAPOR PRESSURES PURE

[2] VAPOUR-LIQUID EQUILIBRIA IN THE TERNARY SYSTEM ETHYL ACETATE-BENZENE-CYCLOHEXANE [J].