Bulletin of the American Physical Society
APS March Meeting 2019
Volume 64, Number 2
Monday–Friday, March 4–8, 2019; Boston, Massachusetts
Session C51: Recent Developments in Nonequilibrium Dynamics and Rheology of Entangled Polymer Liquids
2:30 PM–5:30 PM,
Monday, March 4, 2019
BCEC
Room: 253A
Sponsoring
Unit:
DPOLY
Chair: Shiqing Wang, Univ of Akron
Abstract: C51.00001 : Molecular Rheology of Entangled Polymeric Fluids: New Discoveries and Remaining Challenges*
2:30 PM–3:06 PM
Presenter:
Bamin Khomami
(University of Tennessee)
Author:
Bamin Khomami
(University of Tennessee)
In this presentation, I will review the progress made in fundamental understanding of non-equilibrium dynamics of polymeric melts as well as the remaining challenges in development of a unified approach for predicting dynamics of this class of fluids in processing flows commonly used to produce structural and functional soft materials. Specifically, I will discuss: (1) Non-Equilibrium Molecular Dynamics Simulations (NEMD) results that depict existence of new phenomena that challenges the fundamental tenants of theories and models used to describe fast flow of entangled polymeric fluids, (2) the intricate connection between single chain dynamics and the macroscopic response of this class of fluids including the intriguing phenomena of shear banding and configurational microphase separation in elongational flow.
*Financial support was provided by the National Science Foundation under Grant No. CBET-1602890. Computational resources for this project were provided byallocation of advanced computational resources by the National Institute for Computational Sciences (NICS) and the Oak Ridge National Laboratory Joint Institute for Computational Sciences and the Extreme Science and Engineering Discovery Environment (XSEDE), ACI-1548562/TG-CTS150054..
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