Study of the Effects of Electric Parameters on the polyacrylamide NanoFilm Thickness Produced via Electro-Polymerization

Preparation of hydrogels on solid surfaces is of great significance for a number of reasons such as changing the interfacial properties, increasing hydro-philicity, etc. Such films strongly improve mechanical and hydrodynamic properties of the surfaces. In this study, free radical polymerization was initiated by electron transfer from the substrate (stainless steel) to a redox-active initiator in NaNO3 containing electrolyte, using electro-polymerization method. The resulted electropolymerized polyacrylamide hydrogel nano-films were examined and the effect of electric potential on the thickness of the films was studied. It was found that despite previous studies, the applied initial current (and not the electric potential) plays the keyrole in the determination of the final film thickness. Therefore, a new parameter was introduced to predict the outcomes in this technique

Keywords:

Electro-polymerization , polyAcrylamide , Hydrogel , Nanofilm