Elastic breakup in uniaxial extension of entangled polymer melts.

Simulation of elastic rupture in extension of entangled monodisperse polymer melts.

We use a Lagrangian finite element method to simulate experiments on continued and interrupted extensions of a highly entangled monodisperse polymer melt. It is demonstrated that delayed sample necking or rupture may be explained in terms of the original Doi-Edwards model augmented by the mechanism of chain stretching alone.

PRO O F CO PY 001704 JO R Filament stretching and capillary breakup extensional rheometry measurements of viscoelastic wormlike micelle solutions

A filament stretching extensional rheometer and capillary breakup extensional rheometer are used to measure the extensional rheology of a series of wormlike micelle solutions experiencing a uniaxial elongational flow. The experiments are performed using a series of wormlike micelle solutions of both cetylpyridinium chloride and sodium salicylate NaSal in an aqueous sodium chloride solution and ...

Basic characteristics of uniaxial extension rheology

We have carried out continuous and step uniaxial extension experiments on monodisperse and bidisperse styrene-butadiene random copolymers (SBR) to demonstrate that their nonlinear rheological behavior can be understood in terms of yielding through disintegration of the chain entanglement network and rubber-like rupture via non-Gaussian chain stretching leading to scission. In continuous extensi...

From Elastic Deformation to Terminal Flow of a Monodisperse Entangled Melt in Uniaxial Extension

Filament stretching and capillary breakup extensional rheometry measurements of viscoelastic wormlike micelle solutions

filament stretching extensional rheometer and capillary breakup extensional rheometer are used o measure the extensional rheology of a series of wormlike micelle solutions experiencing a niaxial elongational flow. The experiments are performed using a series of wormlike micelle olutions of both cetylpyridinium chloride and sodium salicylate NaSal in an aqueous sodium hloride solution and cetylt...