Interfacial dynamics of polymers at fluid interfaces

Our attention here is focused on the high-frequency dynamics of polymer surface films that are generated by the thermal fluctuations of the liquid surface, i.e. the capillary waves we do not consider the much lower frequency waves generated either by mechanical means or by electrocapillarity. As set out 

Although few polymers have been investigated by SQELS, detailed consideration of the data on each would be somewhat confusing because the results are by no means identical. Therefore we have selected a few polymers where a particularly complete investigation has been pursued or where results from different analytical procedures can be compared. 

SQELS data on polyvinyl acetate were re-analysed in a subsequent paper presenting a compendium of results for polymers that were compared pairwise (Kawaguchi et al. 1989). In this later paper it was assumed that the 

Using the data obtained for various q values, the frequency dependence of the surface tension could be described by a Maxwell fluid model (Ferry 1980) with a single exponential relaxation process. For this model the storage (G ((u)) and loss (G ( y)) are given by 

Polymethyl methacrylate forms a condensed film when it is spread at the air/ water interface and this polymer has been analysed by SQELS by the same two 

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