Title :
Electrical properties of multiwalled carbon nanotubes /polyaniline nanocomposite
Author :
Das, Sandeep Kumar ; Prakash, Rajiv
Author_Institution :
Sch. of Mater. Sci. & Technol., Banaras Hindu Univ., Banaras, India
Abstract :
A nanocomposite of functionalized 2.5 wt.% carboxylated multiwalled carbon nanotubes (MWCNTs) /polyaniline (PANi) is synthesized using in situ chemical polymerization method. MWCNT is coated by using in-situ chemical polymerization of Polyaniline polymer. Structure and morphology of nanocomposite is characterized, using X-ray diffraction pattern (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM), demonstrate that a thin layer of PANi (polyaniline) is well coated on the surface of MWCNT. Electrical properties were characterized using four probe conductivity measurement and electrochemical impedance spectroscopy. The conductivity of PANI-coated MWCNT increases by a factor of three orders due to the incorporation of PANi onto the pore surface of MWNT. The double layer capacitance is also calculated using impedance measurement.
Keywords :
X-ray diffraction; capacitance; carbon nanotubes; conducting polymers; electrical conductivity; electrochemical impedance spectroscopy; nanocomposites; nanofabrication; polymerisation; porous materials; scanning electron microscopy; transmission electron microscopy; C; SEM; TEM; X-ray diffraction; XRD; double layer capacitance; electrical conductivity; electrical properties; electrochemical impedance spectroscopy; four probe conductivity measurement; functionalized carboxylated MWCNT-PANI nanocomposites; impedance measurement; in situ chemical polymerization; multiwalled carbon nanotube-polyaniline nanocomposites; nanocomposite morphology; nanocomposite structure; pore surface; scanning electron microscopy; transmission electron microscopy; Carbon nanotubes; Chemicals; Conductivity measurement; Polymer films; Probes; Scanning electron microscopy; Surface morphology; Transmission electron microscopy; X-ray diffraction; X-ray scattering; CNTs; Nanocomposite; Polyaniline;
Conference_Titel :
Emerging Trends in Electronic and Photonic Devices & Systems, 2009. ELECTRO '09. International Conference on
Conference_Location :
Varanasi
Print_ISBN :
978-1-4244-4846-3
DOI :
10.1109/ELECTRO.2009.5441048