p-toluene sulfonic acid doped polyaniline carbon nanotube composites: synthesis via different routes and modified properties

Abstract

Composites of polyaniline and carbon nanotube (CNT) were prepared by in-situ chemical polymerization method using various aniline concentrations in the initial polymerization solution with p-toluene sulfonic acid (PTS) as secondary dopant and mechanical mixing of the PANI and CNT using different weight ratios of PANI and CNTs. The structural characterizations of the composites were done by Fourier transform infrared (FTIR) and Ultra violet visible spectroscopy (UV-Visible). Scanning electron microscopy (SEM) was used to characterize the surface morphology of the composites. It was found that the composites prepared by in-situ chemical polymerization had smoother surface morphology in comparison to the composites obtained by mechanical mixing. The capacitive studies reveal that the in-situ composite has synergistic effect and the specific capacitance of the composite calculated from cyclic voltammogram (CV) was 385.1 F/g. Thermal studies indicate that the composites are stable as compared to PANI alone showing that the CNT contributes towards thermal stability in the PANI-CNT composites

Synthesis of novel fluorescent molecule and its polymeric form with aniline as fluorescent and supercapacitor electrode materials

“…IR spectra of the P(ANI‐4ABA) and P(ANI‐2NA4ABA) are similar to each other, which are in turn similar to that of the IR spectrum of the PANI salt. The primary peaks at 3440 cm −1 corresponding to N─H str., 3200 cm −1 (NH + characteristic of doping, ie, salt formation), 1475 and 1240 cm −1 peaks assigned to benzenoid ring of C═C and C─N stretching vibrations, 1560 and 1300 cm −1 peaks corresponding to C═C and C─N stretching vibrations of a quinonoid ring in PANI salts, 1110 cm −1 (N═Q═N vibration, where Q stands for the quinoid ring) and 1,4 disubstituted benzene peak observed at 800 cm −1 re very similar to the IR spectrum of prevailing PANI salts . In addition to the PANI salt peaks, IR of P(ANI‐4ABA) demonstrates a peak at 1650 cm −1 owing to ─COOH attributable to 4ABA and P(ANI‐2NA4ABA) demonstrates a peak at 1740 cm −1 to ─O─C═O─ due to 2NA4ABA.…”

Fabrication of Inorganic/Organic Hybrid Heterojunctions of Polyaniline Composite/Blend for the Study of Diode Characteristics

“…Doped ZnO NRs were grown on seed ZnO layer on FTO glass by SILAR and HTCBD methods as reported in our earlier work. 31 PANI:MWCNT nanocomposite was synthesised using in-situ chemical oxidative polymerisation methods 32,33 and dissolved in glycerol to form a gel. The gel was spin coated on ZnO NRs and Al/Fe doped ZnO NRs at the rate of 3000 rpm.…”

Organic solvent soluble methyltriphenylphosphonium peroxodisulfate: a novel oxidant for the synthesis of polyaniline and the thus prepared polyaniline in high performance supercapacitors

“…The FT-IR spectra of the three polyaniline salts show similar behavior. 17,18 XRD studies of polyaniline salts 1a) shows major characteristic peaks at 3440 cm À1 (N-H str.…”