Functionalization of PTFE and Si(100) surfaces by consecutive graft polymerization of glycidyl and aniline monomers

Chemical modification of argon plasma-pretreated poly(tetrafluoroethylene) (PTFE) film and Si(100) surfaces by UV-induced surface graft polymerization with glycidyl methacrylate (GMA) and glycidyl acrylate (GA), respectively, followed by epoxide-ring opening reaction with aniline (An), and finally o xidative graft polymerization with aniline had been carried out to render t he PTFE and silicon surfaces electroactive, The composition and microstruct ure of the graft-polymerized PTFE and silicon surfaces were studied by X-ra y photoelectron spectroscopy (XPS). The physicochemical characteristics of the polyaniline (PANI) chains grafted onto PTFE film and silicon surfaces w ere grossly similar to those of the PANI homopolymer. The surface resistanc e of the aniline graft-polymerized PTFE film and silicon substrate was redu ced to between 10(4) Omega/square and 10(7)Omega/square.