Characterization of Interfaces and Surfactant Layers
Interfacial and surface tension can be characterized by classical methods such as the -pendant or spinning drop method Dynamic surface tensions, i.e. surface tension as a function of time, can be obtained by the Maximum Bubble Pressure apparatus
The structure of surfactant layers can be studied by ellipsometry or X-Ray reflectivity.
Surface rheology can be characterized by the oscillating drop method or shear surface rheometers such as double-cone, double-ring or magnetic rod shear surface rheometer.
Read more about this topic: Cationic Surfactants
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