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Grafting of Polyaniline onto the Surface of Amino-Functionalized Multi-Walled Carbon Nanotube via Interfacial Polymerization

Published online by Cambridge University Press:  31 January 2011

In-yup Jeon  and
Jong-beom Baek
In-yup Jeon
Affiliation:
inyup@unist.ac.kr
Jong-beom Baek
Affiliation:
jbbaek@unist.ac.kr, Ulsan National Institute of Science and Technology, 1School of Energy Engineering, Ulsan metropolitan city, Korea, Republic of
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Abstract

The mixture of polyaniline (PANi) and PANi grafted multi-walled carbon nanotube (PANi-g-MWNT) was prepared by two step reaction sequences. MWNT was first functionalized with 4-aminobenzoic acid via “direct” Firedel-Crafts acylation in polyphosphoric acid (PPA)/phosphorous pentoxide (P2O5) medium to afford aminobenzoyl-functionalized MWNT (AF-MWNT). Then, aniline was polymerized via in-situ static interfacial polymerization in H2O/CH2Cl2 in the presence of AF-MWNT in organic phase to yield the mixture of PANi and PANi-g-MWNT. The mixture was characterized with a various analytical techniques such as Fourier transform infrared spectroscopy (FT-IR), wide angle x-ray diffraction (WAXD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), cyclic voltammogram (CV). Even after dedoping, the mixture displayed semimetallic conductivity (4.9 S/cm). The capacitance of the mixture was also greatly enhanced and its capacitance decay with respect to cycle times was significantly reduced.

Keywords

polymerscanning electron microscopy (SEM)scanning transmission electron microscopy (STEM)
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1240: Symposium WW – Polymer Nanofibers–Fundamental Studies and Emerging Applications , 2009 , 1240-WW09-03
Copyright
Copyright © Materials Research Society 2010

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