Elasticity and viscosity measurements of monomolecular PROPYL STEARATE (cas 3634-92-2) films at air-water interfaces using laser light scattering techniques
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Add time:07/14/2019 Source:sciencedirect.com
Measurements of PROPYL STEARATE (cas 3634-92-2) monolayers were made using a new laser light scattering apparatus. Thermal capillary waves in the frequency range 7–16 kHz were studied. For the first time the film elasticity and viscosity have been determined from light scattering measurements. The determined elasticity differs at most by a factor of 4 from the elasticity obtained from the equilibrium π-A-isotherm. The viscosity values are of the order of 1 · 10−7 kg/sec and increase with increasing film density.
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