Abstract
AbstractThe use of the parallel disc model is extended to allow for partial mobility of the interfaces to describe thinning at the thinnest point of an unevenly draining film.Various methods of describing partial mobility are described and compared. The model predicts satisfactorily the observed film thinning (measured by the light interference method) for toluene/water systems containing zero, 10−6M and 10−4M palmitic acid with toluene drops ranging from 0.0025 to 0.005 ml and an anisole/water system with 0.015 ml anisole drop. The trend of change of the calculated partial mobility is consistent with the expected liquid/liquid interface behavior during thinning.
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