Polyaniline nanofibers prepared with ultrasonic irradiation

Abstract

Ultrasonic irradiation was applied to the synthesis of polyaniline (PANI) nanofibers in a conventional oxidant dropwise addition fashion. The secondary growth of the initially formed PANI nanofibers into thick fibers with uneven surfaces and the agglomeration of the thick fibers into irregular particles that occurred in the case of magnetic stirring were successfully prevented in the presence of ultrasonic irradiation, and the nanofibers were preserved even hours after the secondary addition of aniline and ammonium peroxydisulfate to the reaction media. This makes the method one of the facile ways of synthesizing PANI nanofibers.