Comparison of poly(o‐anisidine) and poly(o‐anisidine‐co‐aniline) copolymer synthesized by chemical oxidative method

Abstract

In this study, poly(o-anisidine) [POA], poly(o-anisidine-co-aniline) [POA-co-A], and polyaniline [PANi] were chemically synthesized using a single polymerization process with aniline and o-anisidine as the respective monomers. During the polymerization process, ptoluene sulfonic acid monohydrate was used as a dopant while ammonium persulfate was used as an oxidant. Nmethyl-pyrolidone (NMP) was used as a solvent. We observed that the ATR spectra of POA-co-A showed features similar to those of PANi and POA as well as additional ones. POA-co-A also achieved broader and more extended UV-vis absorption than POA but less than PANi. The chemical and electronic structure of the product of polymerization was studied using Attenuated Total Reflectance spectroscopy (ATR) and UV-visible spectroscopy (UV-vis). The transition temperature of the homopolymers and copolymers was studied using differential scanning calorimetry and the viscosity average molecular weight was studied by using dilute solution viscometry.

Chemical oxidative polymerization, optical, electrochemical and kinetic studies of 8-amino-2-naphthol

“…Thus, AN units bind with each other to produce an oligomer. Similar polymerization mechanisms for aminonaphthol homopolymers and some copolymers have been previously reported in the literature [31][32][33][34]. The molecular weight of OAN was determined by SEC.…”

Polyaniline‐grafted polyurethane coatings for corrosion protection of mild steel surfaces

“…Poly( m ‐aminophenol) was synthesized in an aqueous medium, using APS as an oxidant, as described in the literature . First, 3.27 g (30 mmol) of m ‐aminophenol was dissolved in 50 mL of 0.6 M aqueous NaOH solution in a two‐neck round‐bottom flask.…”

Conventional surfactant-doped poly (o-anisidine)/GO nanocomposites for benzaldehyde chemical sensor development

“…It exhibited three sharp absorption bands at 300, 410, and approximately 550 nm attributed to the p-p* transition of benzenoid peak or polaron/bipolaron nature with the pi-electron in the benzene ring. Characteristic absorbance peaks of the doped polymer are observed at 550 nm in the spectra of the PANI derivatives [44,45]. They are due to the polaron band transitions in the doped form of the PANI derivatives.…”