Аннотация:Investigate the influence of the morphology of undoped polyaniline (PANi) on modified epoxy composite materials. An epoxy oligomer (E0) with molecular weight ̃400 and a mass fraction of epoxy groups of 21.5% was used in the study. Modified aminic hardeners (AH) were used as crosslinking agents and PANi was used as the modifier. It was received by two different expedients, such as the dropwise method and on prompt merging. The morphology of the modifying component of the PANi synthesized using the two expedients was evaluated. Microscopic examination of epoxy coatings hardened with aminic hardeners, with various rodlike or starlike content, showed that coatings were homogeneous if they contained 0.38%wt of PANi.