Surface rheology and adsorption dynamics in drainage processes of

Surface Rheology and Adsorption Dynamics in Drainage Processes of Thin Liquid Films 

The rate of thinning (drainage) of liquid films is drastically influenced by the rheological properties of the related adsorption layer. We will restrict ourselves to just a few examples. A detailed description of various sites of thin film problems is given for example by Ivanov (1988) and Hunter (1993). The immobilisation of a cylindrical plane film is a precondition for 

The application of the lubrication approximation demands that the radius of the liquid film exceeds its thickness 10 times. In thin film research the thickness of a film is usually denoted by h, the radius R corresponds to the flat part of the thin film as shown by Manev et al. 

For the rate of thinning for rigid surfaces Reynolds equation can be written in the following form (Scheludko 1967), 

This equation is the basis for Scheludko s dynamic method (1961) for determining the disjoining pressure in thin films. An additional condition is 

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