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Drop Formation and Breakup of Low Viscosity Elastic Fluids: Effects of Molecular Weight and Concentration
(2007-01-23)
The dynamics of drop formation and pinch-off have been investigated for a series of low viscosity elastic fluids possessing similar shear viscosities, but differing substantially in elastic properties. On initial approach ...
The Beads-on-String Structure of Viscoelastic Threads
(2007-01-23)
By adding minute concentrations of a high molecular weight polymer, liquid jets or bridges collapsing under the action of surface tension develop a characteristic shape of uniform threads connecting spherical
uid drops. ...
How Dilute are Dilute Solutions in Extensional Flows?
(2007-01-23)
We investigate the concentration-dependence of the characteristic relaxation time of
dilute polymer solutions in transient uniaxial elongational flow. A series of monodisperse polystyrene solutions of five different ...