Preparation and characterization of graphite composites of polyaniline

• Polyaniline (PANI) + graphite (GH) composites were prepared by in situ polymerization.
• Electrical properties of the PANI + GH were characterized with dielectric spectroscopy.
• Conductivity mechanisms of the composites were determined from DC to Correlated Barrier Hoping (CBH).

In this work, synthesis and characterization of composite materials based on graphite (GH) and boric acid doped polyaniline (PANI) was studied. PANI + GH composites were prepared via a simple in situ polymerization of aniline in graphite dispersion. The resulting composites of the PANI + GH were characterized by using spectroscopic, morphologic and physical methods. Ac conductivity and electronic properties of PANI doped 2%, 5% and 10% GHs have been investigated by impedance spectroscopy within the frequency interval of 10 kHz–15 MHz. The frequency dependence of ac conductivity (σAC) of PANI and PANI + GH composites have been investigated by means of frequency exponent “s” parameter in the low and high frequency regions.

Powder materials based on graphite and boric acid doped polyaniline were prepared by in situ polymerization. The absorption coefficient effects works of PANI and PANI + GH composites showed nearly-Debye type process. Conductivity properties of composites observed Correlated Barrier Hoping (CBH) Mechanism.Figure optionsDownload as PowerPoint slide