Synthesis and Characterization of Polypyrrole ..

Polypyrrole(PPy) thin films were deposited on vapor grown carbon fibers(VGCF). Formation of PPy on VGCF was carried out by using an in-situ chemical polymerization of the monomer in presence of FeCl3 oxidant. An ultrasonic cavitational stream was used during polymerization of pyrrole, to enable the deposition of uniformly thin (ca.7nm) PPy films onto the surface of VGCF. The PPy/VGCF composite was characterized by FTIR spectroscopy. The surface morphology of the polymer films were characterized by using scanning electron microscopy (SEM) and scanning transmission emission microscopy (TEM).

Patil,

[13] H. Kato, O. Nishikwa, T. Matsui, S. Honma and H. Kokado, “Fourier Transform Infrared Spectroscopy Study of Conducting Polymer Polypyrrole Higher Order Structure of Electrochemically Synthesized Film,” The Journal of Physical Chemistry, Vol. 95, No. 15, 1991, pp. 6014- 6016.


we have synthesized a polypyrrole films by chemical ..

[12] R. Ansari, “Polypyrrole Conducting Electro Active Polymers: Synthesis and Stability Studies,” E-Journal of Chemistry, Vol. 3, No. 13, 2006, pp. 186-201.


Electrochemical synthesis of polypyrrole films ..

An improved approach to assemble ultrathin and thickness-tunable polypyrrole (PPy) films onto multiwall carbon nanotubes (MWCNTs) has been investigated. A facile procedure is demonstrated for controlling the morphology and thickness of PPy film by adding ethanol in the reaction system and a possible mechanism of the coating formation process is proposed. The coated PPy films can be easily tuned by adding ethanol and adjusting a mass ratio of pyrrole to MWCNTs. Moreover, the thickness of PPy significantly influences the electronic conductivity and capacitive behavior of the PPy/MWCNT composites. The method may provide a facile strategy for tailoring the polymer coating on carbon nanotubes (CNTs) for carbon-based device applications.

To realize the synthesis of PPY films, ..

An improved approach to assemble ultrathin and thickness-tunable polypyrrole (PPy) films onto multiwall carbon nanotubes (MWCNTs) has been investigated. A facile procedure is demonstrated for controlling the morphology and thickness of PPy film by adding ethanol in the reaction system and a possible mechanism of the coating formation process is proposed. The coated PPy films can be easily tuned by adding ethanol and adjusting a mass ratio of pyrrole to MWCNTs. Moreover, the thickness of PPy significantly influences the electronic conductivity and capacitive behavior of the PPy/MWCNT composites. The method may provide a facile strategy for tailoring the polymer coating on carbon nanotubes (CNTs) for carbon-based device applications.

irradiation during synthesis of polypyrrole by a ..

Normally, there are significant challenges in tuning the thickness of the polymer shell, since it is intractable in processing chemically the synthesized polymer onto the surface of the carbon nanotubes. Fortunately, an ultrathin and strongly adherent polypyrrole shell grown on the surface of carbon nanotubes are readily obtained directly by our improved method. The morphology and the thickness of polypyrrole shells were kept nicely in our reproducible tests, permitting tuning the thickness of polymer shell by changing the mass ratio of Pyrrole monomers to MWCNTs. Therefore, the PPy/MWCNT composites with tunable thickness of polymer shell were easily fabricated.