Electrodeposition of polymer coatings

Electrochemical deposition of polymer coatings makes use of electrolytic solution, containing monomeric and/or polymeric starting materials. Under the influence of electrochemical processes physical or chemical transformation of the dissolved material leads to the formation of a solid film or 10 nm to 100 υm thickness on the electrode. Nucleation and precipitation may be rate determining processes and are discussed in greater detail, namely: (1) electrocoagulation of waterborne polymers. (2) Elektrochemical coupling, in the case of anodic electropolymerization of (hetero) aromatics. The progration step is an electrochemical one. (3) Electrochemically initiated vinylpolymerization. The propagation step is of chemical nature. Combination of these methods are also known. The most important practical application is corrosion protection of iron substrates.