National Physical Laboratory

Oscillatory rheometry

The viscoelastic properties of polymer melts can be measured using oscillatory rheometry.

The principle of the technique is to subject a specimen, held between two plates, to a sinusoidal torque or displacement. The response of the sample to that input is measured. Typically, shear storage G' and shear loss G'' moduli are determined.

The method is suitable for generating quantitatively accurate data for modelling, as well as for quality control.

NPL Facility: Controlled stress oscillatory rheometer covering a wide range of temperatures and frequencies, suited for measurement of stable and curing/degrading materials having viscosities in the range from approximately 1 mPa.s to 10,000 Pa.s.

Last Updated: 18 Aug 2016
Created: 1 Sep 2008


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