Anisotropic Thermal Conductivity in Shear Deformations of Polymer Melts

Project: Research project

Project Details


Abstract for Venerus' project


Anisotropic Thermal Conduction in Deforming Polymers

Flow-induced orientation of polymeric molecules results in anisotropic

mechanical, optical and thermal properties and has profound effects on

material properties. The objective of this study is to obtain

quantitative, time-dependent measurements of the thermal diffusivity tensor

in deforming polymer liquids. These measurements will be made using a

non-invasive optical technique known as Forced Rayleigh Scattering.

Experiments will be conducted on several polymer melts in step-shear

strain and cessation of steady shear rate flows. Measured components of

the thermal diffusivity tensor will used in conjunction with mechanical

(stress) and optical (birefringence) data to evaluate the stress-thermal


Understanding the connection between the flow-induced orientation that

occurs during processing of polymers and their end-use physical properties

is essential. The thermal diffusivity tensor measurements obtained in this

study will significantly enhance efforts to formulate physically-meaningful

process flow models that can be used for the development of advanced

processing technologies and applications.

Effective start/end date8/1/007/31/04


  • National Science Foundation: $199,115.00


Explore the research topics touched on by this project. These labels are generated based on the underlying awards/grants. Together they form a unique fingerprint.