Instructive polymeric surfaces

Adsorption versus Polymerization. It is instructive to examine further the time dependence of the corrosion inhibition. In acid corrosion inhibition tests, steady state is customarily assumed to be reached within 10 to 20 min after initial exposure of the metal specimen. Since the inhibitors function by reducing the available active surface area, we expect an increase in and a corresponding decrease in P. The degree of corrosion protection the inhibitor provides is given by... 

Because of these couditions, the mechauism of polymerization is basically different. The essentials of an emulsion polymerization system are a monomer, a surface-active agent (surfactant), an initiator, and water. Initially, the surfactant is in the form of micelles, spherical or rodlike aggregates of 50-100 surfactant molecules with their hydrophobic tails oriented inward and their hydrophilic heads outward. These micelles form whenever the concentration of surfactant exceeds a rather low critical micelle concentration. The manner in which the critical micelle concentration for a given surfactant is measured is instructive for our purposes. If a dilute... 

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