Extensional viscosity: A critical discussion

CJS Petrie - Journal of Non-Newtonian Fluid Mechanics, 2006 - Elsevier
The issue of whether extensional viscosity is a concept that causes more confusion than
enlightenment is addressed. This author's view is that misuse of the concept certainly has …

Extensional rheology and processing of polymeric materials

H Münstedt - International Polymer Processing, 2018 - degruyter.com
Many processing operations of polymeric materials are dominated by extensional flow. In
this paper the question is addressed in which way rheological data obtained from …

When polymer chains are highly aligned: a perspective on extensional rheology

Q Huang - Macromolecules, 2022 - ACS Publications
We provide a Perspective on recent findings in extensional rheology for polymer melts and
solutions with different macromolecular architectures. For linear polymer systems, we focus …

Concentrated polymer solutions are different from melts: Role of entanglement molecular weight

Q Huang, O Mednova, HK Rasmussen… - …, 2013 - ACS Publications
We compare viscoelastic properties of several polystyrene solutions and melts with the
same number of entanglements. It is demonstrated that the modulus and time can be shifted …

Measuring the transient extensional rheology of polyethylene melts using the SER universal testing platform

M Sentmanat, BN Wang, GH McKinley - Journal of rheology, 2005 - pubs.aip.org
We use a new extensional rheology test fixture that has been developed for conventional
torsional rheometers to measure the transient extensional stress growth in a number of …

Extensional rheology of a shear-thickening cornstarch and water suspension

EE Bischoff White, M Chellamuthu, JP Rothstein - Rheologica acta, 2010 - Springer
A filament-stretching rheometer is used to measure the extensional viscosity of a shear-
thickening suspension of cornstarch in water. The experiments are performed at a …

Synthesis and linear and nonlinear melt rheology of well-defined comb architectures of PS and PpMS with a low and controlled degree of long-chain branching

M Kempf, D Ahirwal, M Cziep, M Wilhelm - Macromolecules, 2013 - ACS Publications
Well-defined, monodisperse homopolymer comb architectures with varied number and
length of the branches under linear and nonlinear deformation were synthesized and …

Elongational viscosity of monodisperse and bidisperse polystyrene melts

JK Nielsen, HK Rasmussen, O Hassager… - Journal of …, 2006 - pubs.aip.org
The start-up and steady uniaxial elongational viscosity have been measured for two
monodisperse polystyrene melts with molecular weights of 52 and 103 kg∕ mole, and for …

Characterization of industrial low-density polyethylene: a thermal, dynamic mechanical, and rheological investigation

L Poh, Q Wu, Y Chen, E Narimissa - Rheologica Acta, 2022 - Springer
The study of commercial low-density polyethylenes (LDPEs) has always focused on the
effects of the molecular architecture of the polymer on its shear and extensional rheological …

[HTML][HTML] Complex polymer topologies in blends: shear and elongational rheology of linear/pom-pom polystyrene blends

V Hirschberg, S Lyu, MG Schußmann - Journal of Rheology, 2023 - pubs.aip.org
The shear and elongational rheology of linear and pom-pom shaped polystyrene (PS)
blends was investigated experimentally and modeled using constitutive models such as the …