Paper Number
SM37 

Session
Polymer Solutions & Melts

Title
From wall slip to shear banding: A journey through creep

Presentation Date and Time
February 15, 2017 (Wednesday) 3:35

Track / Room
Track 5 / Snowy Egret

Authors (Click on name to view author profile)

1. Ge, Sirui (University of Akorn)
2. Zhu, X.Y. (University of Akorn)
3. Wang, M. C. (University of Akorn)
4. Wang, Shi-Qing (University of Akorn)

Author and Affiliation Lines (in printed abstract book)
Sirui Ge, X.Y. Zhu, M. C. Wang, and Shi-Qing Wang
University of Akorn, Akron, OH

Speaker / Presenter 
Wang, Shi-Qing

Text of Abstract
We report wall slip, shear banding in rate-controlled startup shear on one set of polybutadiene (PB) solutions and entanglement-disentanglement transition during creep without any shear strain localization on another set of PB solutions. The new data provide a more comprehensive description of wall slip, show shear banding in absence of edge instabilities, and demonstrate that creep produces a truly meaning overshoot in the transient viscosity and is a particular insightful mode to learn about the nonlinear responses of highly entangled polymers to shear deformation.