Murray Rheology Blog

May 11, 2018

For an initial rheometry test, a constant shear rate over time is a great way to establish if the foam structure is stable under a low shear. Shear stress values should remain at cons...

April 26, 2018

Polymer melt rheology contains many specialized formulae for estimating chain molecular weight, chain length distribution, and temperature transitions. These useful relations make pol...

April 19, 2018

The particle-jamming cornstarch and hydocluster-forming fumed silica both displayed strain hardening in the Lissajous plots (example shown in Figure 1a), while the polymer bridged flo...

April 13, 2018

In Lissajous plots, these characteristics manifests themselves as ellipsoids for gels (Figure 2a) and rectangles for glasses (Figure 2b). Such a strong difference in the large strain...

February 14, 2018

To set an oscillatory test, sinusoidal shear strain must be achieved through oscillating the measuring system with a highly controlled angular frequency. The rheometer requirements ar...

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