Ontology highlight
ABSTRACT:
SUBMITTER: O'Connor TC
PROVIDER: S-EPMC7190399 | biostudies-literature | 2020 Jan
REPOSITORIES: biostudies-literature
O'Connor Thomas C TC Ge Ting T Rubinstein Michael M Grest Gary S GS
Physical review letters 20200101 2
Molecular dynamics simulations confirm recent extensional flow experiments showing ring polymer melts exhibit strong extension-rate thickening of the viscosity at Weissenberg numbers Wi≪1. Thickening coincides with the extreme elongation of a minority population of rings that grows with Wi. The large susceptibility of some rings to extend is due to a flow-driven formation of topological links that connect multiple rings into supramolecular chains. Links form spontaneously with a longer delay at ...[more]