Conducting film-forming composites based on polyaniline-polyimide blends

A procedure is developed for preparing conducting films by their casting from polymer solutions containing polyaniline in the form of a protonated emeraldin base and polyimides in two cosolvents, N -methylpyrrolidone or m -cresol. Self-supporting films cast from composites based on polyimides and camphorsulfonic acid-protonated polyaniline combine a conductivity of 10 −1 −10 −2 S/cm with good mechanical properties: elastic modulus E = 2.0−2.4 GPa, breaking strength σ b = 55−60 MPa, and elongation at break ɛ b = 8−10%. It has been shown that, when m -cresol and N -methylpyrrolidone are used as cosolvents, the maximum film conductivity is achieved at polyaniline amounts in the composites of 20 and 3%, respectively. In the latter case, films with good strength parameters are formed.