HOLOGRAPHIC GRATING STUDY OF MASS AND THERMAL-DIFFUSION OF POLYSTYRENE TOLUENE SOLUTIONS

被引：50

作者：

KOHLER, W

ROSENAUER, C

ROSSMANITH, P

机构：

[1] Max-Planck-Institut für Polymerforschung, Mainz, D-55021

来源：

INTERNATIONAL JOURNAL OF THERMOPHYSICS | 1995年 / 16卷 / 01期

关键词：

DIFFUSION; FORCED RAYLEIGH SCATTERING; HOLOGRAPHY; POLYMER SOLUTION; THERMAL DIFFUSION;

D O I：

10.1007/BF01438953

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The transient grating technique of thermal diffusion forced Rayleigh scattering (TDFRS) has been employed to study translational and thermal diffusion of polystyrene in toluene. Different molar masses and concentrations below or slightly above the overlap concentration c* have been investigated. The translational diffusion coefficients agree well with results obtained from photon correlation spectroscopy. Small remaining differences can be attributed to sample polydispersity. The molar mass independence of the thermal diffusion coefficient is confirmed, and thermal diffusion and Soret coefficients are compared with data obtained from thermal field flow fractionation and diffusion cell experiments.

引用

页码：11 / 21

页数：11

共 19 条

[1] COOPERATIVE AND SELF-DIFFUSION OF POLYMERS IN SEMI-DILUTE SOLUTIONS BY DYNAMIC LIGHT-SCATTERING [J].