The Interfacial Shear Rheometer ISR-1 allows the measurement of interfacial shear properties of layers between two fluid (liquid/liquid or liquid/gas). It allows unique shear rheological experiments. Shear experiments are most useful for polymer and mixed polymer-surfactant adsorption layers and insoluble monolayers and give access to interaction forces in two-dimensional layers. Dilational interfacial properties are most frequently studied for soluble adsorption layers of surfactants and mixtures of polymers and surfactants.
|Range Interfacial Shear Viscosity||1µNs/m to 100 mNs/m|
|Range Interfacial Shear Elasticity||1µPam to 100 mPam|
|Range of frequency||0.2 to 0.02Hz|
|Dimensions (LxWxH)||50x50x70cm (20x20x28’’)|
|Weight||50kg (110 lb.)|
The principle is a torsion pendulum. Different measuring bodies are available to work at liquid surface or interfaces between two immiscible liquids.
- Time dependencies over hours of adsorption time
- Shear elasticity and viscosity of a surface layer
- Frequency range between 0.2 to 0.02 Hz