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The Beads-on-String Structure of Viscoelastic Threads
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. ...
Drop Formation and Breakup of Low Viscosity Elastic Fluids: Effects of Molecular Weight and Concentration
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 ...
How Dilute are Dilute Solutions in Extensional Flows?
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 ...