Homogeneous shear, wall slip, and shear banding of entangled polymeric liquids in simple-shear rheometry: A roadmap of nonlinear rheology
SQ Wang, S Ravindranath, PE Boukany - Macromolecules, 2011 - ACS Publications
The recent particle-tracking velocimetric (PTV) observations revealed that well-entangled
polymer solutions and melts tend to either exhibit wall slip or assume an inhomogeneous …
polymer solutions and melts tend to either exhibit wall slip or assume an inhomogeneous …
Linear and nonlinear shear rheology of a marginally entangled ring polymer
ZC Yan, S Costanzo, Y Jeong, T Chang… - …, 2016 - ACS Publications
We present systematic, unique linear and nonlinear shear rheology data of an
experimentally pure ring polystyrene and its linear precursor. This polymer was synthesized …
experimentally pure ring polystyrene and its linear precursor. This polymer was synthesized …
Triggers and signatures of shear banding in steady and time-dependent flows
SM Fielding - Journal of Rheology, 2016 - pubs.aip.org
This précis is aimed as a practical field guide to situations in which shear banding might be
expected in complex fluids subject to an applied shear flow. Separately for several of the …
expected in complex fluids subject to an applied shear flow. Separately for several of the …
Shear banding in time-dependent flows of polymers and wormlike micelles
RL Moorcroft, SM Fielding - Journal of Rheology, 2014 - pubs.aip.org
We study theoretically the formation of shear bands in time-dependent flows of polymeric
and wormlike micellar surfactant fluids, focussing on the protocols of step shear stress, step …
and wormlike micellar surfactant fluids, focussing on the protocols of step shear stress, step …
[HTML][HTML] Perspective on edge fracture
Edge fracture is a viscoelastic instability characterized by the sudden indentation of a fluid's
free surface when the fluid is subjected to a high enough shear rate. During shear …
free surface when the fluid is subjected to a high enough shear rate. During shear …
Viscoelasticity, nonlinear shear start-up, and relaxation of entangled star polymers
F Snijkers, K Ratkanthwar, D Vlassopoulos… - …, 2013 - ACS Publications
We report on a detailed rheological investigation of well-defined symmetric entangled
polymer stars of low functionality with varying number of arms, molar mass of the arms, and …
polymer stars of low functionality with varying number of arms, molar mass of the arms, and …
Sufficiently entangled polymers do show shear strain localization at high enough Weissenberg numbers
This Letter concludes that the recent data of Li et al.[J. Rheol. 57, 1411–1428 (2013)] are
entirely consistent with the previous observations of the occurrence and absence of shear …
entirely consistent with the previous observations of the occurrence and absence of shear …
Response of elastoviscoplastic materials to large amplitude oscillatory shear flow in the parallel-plate and cylindrical-Couette geometries
JJ Stickel, JS Knutsen, MW Liberatore - Journal of Rheology, 2013 - pubs.aip.org
Most investigations of large amplitude oscillatory shear (LAOS) rheometry to date have
presumed uniform shear. The study of structured materials would especially benefit from …
presumed uniform shear. The study of structured materials would especially benefit from …
Start-up and relaxation of well-characterized comb polymers in simple shear
F Snijkers, D Vlassopoulos, H Lee, J Yang… - Journal of …, 2013 - pubs.aip.org
We report on the shear flow start-up and the relaxation upon flow cessation of anionically
synthesized comb polymers of different chemistries. The experimental data, obtained with a …
synthesized comb polymers of different chemistries. The experimental data, obtained with a …
Shear inhomogeneity in poly (ethylene oxide) melts
The nonlinear rheological behavior of entangled poly (ethylene oxide)(PEO) melts was
studied by particle-tracking velocimetry (PTV) technique in a cone-plate geometry. In the …
studied by particle-tracking velocimetry (PTV) technique in a cone-plate geometry. In the …