Polyaniline Doped with Protonic Acids: Optical and Morphological Studies

Abstract

In this work, polyaniline (PANI) and its doped state with microfiber morphologies were easily synthesized by a chemical route under the oxidative polymerization, in which the polymerization was performed in an acidic medium (protonic acids). In situ polymerization of aniline reacted with the chloride and sulfate ions of hydrochloric and sulfuric acid, respectively. The microfiber-like morphology of undoped and HCl doped PANI was observerd. The X-Ray diffraction patterns represented that H2SO4 doped PANI was crystalline in nature. The effects of dopant acids on its optical properties were discussed. The strong interaction between chloride and sulfate ions with the ammonium group of PANI has been explained. The microfiber and granular morphology for HCl and H2SO4 doped PANI were observed. The redshifts were observed for the microfiber nature of doped PANI. These analytical results confirmed that the prepared PANI was in the doped state. Further, we found that the prepared PANI can be used for the fabrication of polymer solar cells.

Polypyrrole–polyaniline copolymer coated green rice husk ash as an effective adsorbent for the removal of hexavalent chromium from contaminated water

“…[22][23][24] Recently, conducting polymers, specially polyaniline (PANI) and polypyrrole (PPY) have been receiving considerable attention due to their multifaceted applications, such as electrochemical display devices, molecular electronics, non-linear optics, sensors, electromagnetic shielding battery, water treatment, supercapacitors, and wave-absorbing field, etc. [25][26][27][28][29] Besides, PANI and PPY have also been used as an adsorbent in the remediation of Cr(VI) from aqueous media. [30][31][32][33][34] The choice of PANI and PPY in this work was mainly guided by their easy bulk synthesis, biocompatibility, redox properties, large specific surface area, non-toxicity, and low cost.…”

Synthesis and Conductivity Studies of Poly(Methyl Methacrylate) (PMMA) by Co-Polymerization and Blending with Polyaniline (PANi)

“…Table 2 shows the different types of doping acids used by various researchers in the PANi polymerization. The PANi morphology changes with the changing molarity of acids [77][78][79][80][81][82][83]. The self-assembled PANi nanotubes with an outer diameter between 100 to 150 nm and a 40 nm average wall were obtained when 0.1 M HCl was used [79].…”

Enhanced electromagnetic wave absorption of engineered epoxy nanocomposites with the assistance of polyaniline fillers

“…However, the drawbacks of those metal and magnetic materials including poor corrosion resistance and high density restrict the practical application [15,16]. In recent years, conductive polymers and their nanocomposites have received widespread attention for electromagnetic wave absorption because of the versatility, light weight, good corrosion resistance, and adjustable electrical conduction performance [17][18][19][20][21][22][23][24][25][26]. Among them, polyaniline (PANI) shows great potential for electromagnetic wave absorption [27][28][29][30] Although PANI composites show good electromagnetic wave absorption property, the poor mechanical property of these powder composites limits their value for practical application.…”