Interfacial activity and emulsion stabilization

After a polymer ingredient has been adequately dissolved in the aqueous phase it is important to ensure that the solution and environmental conditions (e.g. pH, ionic strength, temperature, and solvent composition) will not promote droplet aggregation during 

The above parameters are derived assuming that the adsorption-desorption process is reversible and that there are no emulsifier-emulsifier interactions in the bulk solution or at the interface. In practice, a thermodynamic interpretation of these parameters may therefore be invalid for many real systems because these assumptions are not met. Nevertheless, these parameters still provide a useful means of characterizing and comparing the interfacial properties of emulsifiers in terms of experimentally measurable quantities. 

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