Other Changes at Water Surfaces due to Lipid Monolayers

5 Other Changes at Water Surfaces due to Lipid Monolayers 

The presence of lipid (or similar kind of substance) monolayer at the surface of aqueous phase gives rise to many changes in the properties at the interface. The major effects that have been investigated 

A monomolecular film is resistant to shear stress in the plane of the surface, as also is the case for the bulk phase A liquid is retarded in its flow by viscous forces. The viscosity of the monolayer may indeed be measured in two dimensions by flow through a canal on a surface or by its drag on a ring in the surface, corresponding to the Ostwald and Couttte instruments for the study of bulk viscosities. The surface viscosity, q, is deflned by the relation 

Pure water surface consists of only water (W) molecules  

While a system with lipid monolayer (L) gives a surface that is different  

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