Anisotropic thermal conduction in a polymer liquid subjected to shear flow

被引：36

作者：

Venerus, DC ^{[1
]}

Schieber, JD

Balasubramanian, V

Bush, K

Smoukov, S

机构：

[1] IIT, Dept Chem Engn, Chicago, IL 60616 USA

[2] IIT, Ctr Excellence Polymer Sci & Engn, Chicago, IL 60616 USA

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 09期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.93.098301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Flow-induced anisotropic thermal conduction in a polymer liquid is studied using force Rayleigh scattering. Time-dependent measurements of the complete thermal diffusivity tensor, which includes one off-diagonal and three diagonal components, are reported on an entangled polymer melt subjected to a uniform shear deformation. These data, in conjunction with mechanical measurements of the stress, provide the first direct evidence that the thermal conductivity tensor and the stress tensor are linearly related in a deformed polymer liquid.

引用

页码：098301 / 1

页数：4

共 14 条

[1]

[Anonymous], 1986, LASER INDUCED DYNAMI

[2]

Bird R.B., 1987, DYNAMICS POLYM LIQUI

[3] Evidence for the stress-thermal rule in an elastomer subjected to simple elongation [J].