Polymers are macromolecules. They have high molecular weight. They cover a large surface area and hence act as effective corrosion
inhibitors. They have been used to control corrosion of various metals such as mild steel, copper, aluminium and stainless steel. They have
been used in acidic, basic and neutral mediums. Adsorption of polymers on metal surface obeys various isotherm such as Langmuir, Temkin,
Freundlich and Frumkin. Methods such as weight loss and electrochemical studies have been used to evaluate the corrosion inhibition
efficiency of polymers. Surface analysis techniques such as FT-IR, SEM and AFM have been used to study the surface morphology of the
protective films.
Key words: adsorption site, active centres, conducting polymers, corrosion inhibition, electron rich, polymers.
|
