Electrodeposition of functionalized pyrrole (N-[3-(dimethylpyridyl-2-yl)aminopropyl], N-(3-aminopropyl), N-(3-acetamidopropyl) and N-(2-cyanoethyl)) on stainless steel gauze for membrane preparation

The preparation of dense membranes for ion separation by the electropolymer ization of functionalized pyrrole has been carried out using pyrrole monome rs with complexing groups such as amino and bis pyridine. The synthesis con ditions of polymer films depend mainly on the applied potential and electro lyte composition; for polymer films derived from pyrrole monomers bearing a mino groups, the film synthesis has been achieved only in acid solution. Th e main results obtained for the electropolymerization of N-(2-cyanoethyl)py rrole, N-(3-aminopropyl)pyrrole, N-(3-acetamidopropyl)pyrrole and N-[3-(dim ethylpyridyl-2-yl)aminopropyl]pyrrole are compared and the experimental con ditions for membrane preparation discussed. The thickness and the morpholog y of the supported conducting polymer membrane prepared at a constant poten tial depend on the precursor monomer used. The duration of electrolysis sho uld be sufficient to cover the metallic support, particularly for the N-[3- (dimethylpyridyl-2-yl)aminopropyl]pyrrole polymer membrane.