Knowledge – Rheology

Knowledge Base - Rheology

On this page we offer information about polymer and elastomer rheological topics.



Melt Flow Rate

The melt index (melt flow rate) is an important measure of how easily the melt of a thermoplastic polymer flows through a capillary. It is used for quality control and as a simple estimate of the flow behaviour in production.

Intrinsic viscosity

With the method described, the intrinsic viscosity (IV) is determined via correlation, without chemical solvents.

Knowledge – Rheology – Corrections with the Rheometer

Corrections to get true Shear Rate and Shear Stress.

Knowledge – Rheology – MFI – Moisture

Influence of Moisture content for PET in Melt Index Testing



Knowledge – Rheology – Large Amplitude Oscillatory Shear

Large Amplitude Oscillatory Shear. Expanded ability to characterize polymers and polymer mixtures with FFT delivers high selectivity.

Related Products


GÖTTFERT – Melt Flow Indexers

Melt flow indexers mi2, MI-3, mi40 and Mi-Robo from GÖTTFERT are meeting the highest customer expectations.
Online Rheo

GÖTTFERT – Online Rheometer

Online-Rheometers from GÖTTFERT for realtime process information on the rheological and molecular structure of polymers.

GÖTTFERT – Laboratory Extruders

Laboratory Extruders from GÖTTFERT- an open Platform for rheological Online Analysis.

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