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.

Fabrication of Polyaniline Nanostructures under Ultrasonic Irradiation: From Nanotubes to Nanofibers

“…[36,37] Recently, using hydrochloric acid as a dopant by an ultrasonic irradiation method, Jing et al have developed a simple and effective method to synthesize polyaniline nanofibers with a diameter about 50 nm. [38] Assisted by the ultrasonic irradiation, PANI/Fe 3 O 4 composite nanotubes or nanorods were also produced. [39,40] In this paper, we explore the ultrasonic irradiation method to demonstrate that it is a general route to create both PANI nanotubes and nanofibers.…”

Synthesis and characterization of core‐shell SiO2 nanoparticles/poly(3‐aminophenylboronic acid) composites

“…31 Polyaniline (PANI) and several other polymer based composites have been synthesized by using ultrasound. [32][33][34] Ultrasonic irradiation has also been utilized for the preparation of nanocomposites of conducting polymers with metal nanoparticles and improved properties of resulting composite material. [35][36][37] PANI is unique among conducting polymers as it possesses well-behaved electrochemistry, good environmental stability, and electrochromism.…”

Self-assembly of aniline oligomers in aqueous medium

“…It is of significant value to uncover the formation mechanism of PANI micro-/ nanostructures in order to achieve their controllable syntheses. Aniline chemical oxidative polymerization (COP) is an effective approach to produce PANI micro-/nanostructures, when the reaction conditions were carefully adjusted [4,5]. The conventional aniline COP was usually carried out by dropwise adding solution of oxidant like ammonium persulfate (APS) into the acidic solution of aniline under stirring.…”