VRH investigation of polyaniline–multiwalled carbon nanotube nanocomposite network

Polyaniline and polyaniline/multi-walled carbon nanotube (PAni/MWCNT) nanocomposites were synthesized by in-situ chemical oxidative polymerization of aniline. Ammonium peroxydisulphate and p-toluenesulphonic acid were used as an initiator and surfactant dopant, respectively. The molar ratio of monom...

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Bibliographic Details
Published in:Bulletin of materials science 2015-08, Vol.38 (4), p.831-835
Main Authors: IMANI, AMIN, FARZI, GHOLAMALI
Format: Article
Language:English
Subjects:
Aniline
Carbon
Chemical synthesis
Chemistry and Materials Science
Conductivity
Dopants
Electrical properties
Engineering
Fourier transforms
Initiators
Materials Science
Mathematical functions
Membrane separation
Morphology
Multi wall carbon nanotubes
Nanocomposites
Oxidation
Particle size
Polyanilines
Polymerization
Polymers
Scanning electron microscopy
Spectrum analysis
Temperature
Toluenesulfonic acid
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Summary:Polyaniline and polyaniline/multi-walled carbon nanotube (PAni/MWCNT) nanocomposites were synthesized by in-situ chemical oxidative polymerization of aniline. Ammonium peroxydisulphate and p-toluenesulphonic acid were used as an initiator and surfactant dopant, respectively. The molar ratio of monomer unit to initiator and dopant was 1:1:1 and the percentage of MWCNT in PAni varied from 1 to 10 wt%. The structure of the resulting nanocomposite was characterized by scanning electron microscopy, X-ray diffraction and Fourier transform infrared spectroscopy. The effects of MWCNT concentration on the electrical properties of the resulting nanocomposites were studied at temperatures between 90 and 300 K. Conductivity increases with the combination of MWCNT in the PAni environment. The strong coupling between the MWCNT and the PAni chains enhances the average localization length and hence conductivity increases for the nanocomposites.
ISSN:0250-4707
0973-7669
DOI:10.1007/s12034-015-0951-7