Paper Number
PO48 

Session
Poster Session

Title
Rheological behavior of wall-slip dominant polybutadiene solutions

Presentation Date and Time
October 8, 2014 (Wednesday) 6:05

Track / Room
Poster Session / Poster

Authors (Click on name to view author profile)

1. Wang, Mengchen (University of Akron, Polymer Science)
2. Wang, Shi-Qing (University of Akron)

Author and Affiliation Lines (in printed abstract book)
Mengchen Wang and Shi-Qing Wang
Polymer Science, University of Akron, Akron, OH 44325

Speaker / Presenter 
Wang, Mengchen

Text of Abstract
We employ rotational shear rheometry to investigate the transient and steady-state responses of entangled polybutadiene solutions that can be predicted to undergo massive wall slip. Wall slip behavior will be studied in both the rate-controlled and stress controlled modes. Unlike the entanglement- disentanglement transition [1], we expect the stick-slip transition (SST) to show hysteresis in an idealized setup of simple shear cell with a constant gap distance. Rotational shear rheometry does not offer such a scenario. Thus, more complex responses are described based on entangled solution that suffers little edge fracture. [1] "Steady state measurements in stress plateau region of entangled polymer solutions: Controlled-rate and controlled-stress modes", S. Ravindranath and S. Q. Wang, J. Rheol. 52, 957 (2008).