Abstract—The composites containing metallic silver in a chemically imidized polyimide matrix (with silver 
either in the surface pores or in the volume of a polyimide film) were obtained by electrochemical reduction 
under various conditions. The curves of electric conductivity versus the electric charge passed through the elec-
trochemical cell during the process of electrolysis are different for the two types of composites. This is 
explained by dominating tangential growth of the metallic silver nuclei in the first type of composites and the 
radial growth of these nuclei in composites of the second type. The IR spectra of the films show that additional 
imidization of residual poly(amic acid) takes place during electrolysis of the composites containing metallic 
silver in the volume.