Viscometer for low frequency, low shear rate measurements
- 1 August 1986
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 57 (8) , 1667-1672
- https://doi.org/10.1063/1.1138547
Abstract
We describe a torsion‐oscillator viscometer whose low frequency (0.5 Hz) and very low shear rate (0.05 s−1) are required for measurements of shear sensitive fluids such as microemulsions, polymer melts and solutions gels, and liquid mixtures near critical points. The viscometer has a resolution of 0.2% when used with liquid samples and a resolution of 0.4% when used with a dense gaseous sample. The viscometer operates under computer control and is compatible with submillikelvin temperature control.Keywords
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