Contour-Variable Model of Constitutive Equations for Polymer Melts

Physics – Fluid Dynamics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

26 pages, 13 figures

Scientific paper

Based on a modified expression of the rate of the convective constraint release, we present a new contour-variable model of constitutive equations in which the non-uniform segmental stretch and the non-Gaussian chain statistical treatment of the single chain are considered to describe the polymer chain dynamics and the rheological behavior of an entangled system composed of linear polymer chains. The constitutive equations are solved numerically in the cases of steady shear and transient start-up of steady shear. The results indicate that the orientation and stretch, as well as the tube survival probability, have strong dependence on the chain contour variable, especially in the high-shear-rate region. However, the inclusion of the non-uniform features in the constitutive models has little modification comparing with the uniform models in determining the rheological properties both qualitatively and quantitatively.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Contour-Variable Model of Constitutive Equations for Polymer Melts does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Contour-Variable Model of Constitutive Equations for Polymer Melts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Contour-Variable Model of Constitutive Equations for Polymer Melts will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-267091

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.