Effect of stretching-induced changes in hydrodynamic screening on coil-stretch hysteresis of unentangled polymer solutions
Soft Condensed Matter
2020-07-03 v1
Abstract
Extensional rheometry and Brownian Dynamics simulations of flexible polymer solutions confirm predictions based on blob concepts that coil--stretch hysteresis in extensional flows increases with concentration, reaching a maximum at the critical overlap concentration before progressively vanishing in the semidilute regime. These observations demonstrate that chain stretching strengthens intermolecular hydrodynamic screening in dilute solutions, but weakens it in semidilute solutions. Flow can thus strongly modify the concentration dependence of viscoelastic properties of polymer solutions.
Keywords
Cite
@article{arxiv.1609.01796,
title = {Effect of stretching-induced changes in hydrodynamic screening on coil-stretch hysteresis of unentangled polymer solutions},
author = {Ranganathan Prabhakar and Chandi Sasmal and Duc At Nguyen and Tam Sridhar and J. Ravi Prakash},
journal= {arXiv preprint arXiv:1609.01796},
year = {2020}
}
Comments
6 pages (twocolumn), 3 figures, supplementary material, submitted to Phys. Rev. Lett