Entanglements in Polymer Solutions under Elongational Flow: A Combined Study of Chain Stretching, Flow Velocimetry, and Elongational Viscosity

  • Chow A
  • Keller A
  • Müller A
 et al. 
  • 8


    Mendeley users who have this article in their library.
  • 67


    Citations of this article.


The progressive development of entanglements can be detected by observing strain patterns during increasing elongational strain rate where each stage is attributable to a transient network with a lifetime appropriate to the corresponding strain rate. The flow velocities are affected locally by transient network stretching, and this has pronounced influence on the macroscopic flow resistance (elongational viscosity). The latter should be highly relevant to the interpretation of continuum hydrodynamics of polymer solutions within elongational flow fields in terms of molecular behavior. The present work showd that this will only be possible by taking account of the "microstructure" in molecular strain and in the correspondingly modified flow velocities, arising as a consequence of the long relaxation times associated with the stretching of transient networks.

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document


Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free