Composite polymer electrolytes surface interactions

It is clear from the situation just described that the latter situation is ideal for a stable chemical modification of the metal substrate and that molecules should be chosen that are able to interact strongly with the metallic substrate. However, there are some characteristic differences between corrosion inhibitors and molecular adhesion promoters whereas for corrosion inhibition the composition and structure of the metal surface are defined by the corrosive medium, the surface properties can be changed and adjusted to the stmcture of the adhesion promoter. Inhibitors must be soluble in the electrolyte (e.g., water) and can be applied only for well-defined reaction conditions. Adhesion promoters, however, may be applied from aqueous or nonaqueous solvents or even from the gas phase and the reaction conditions can be optimized for the given substrate. Therefore, some characteristic molecular features of inhibitors such as heteroatoms S, P, and O should be incorporated into the structure of the adhesion promoter however, the molecule itself should show minimum solubility in water and the possibility to bind a polymer onto the adhesion promoter. 

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