Study of a nanocomposite based on a conducting polymer: polyaniline.
A simple way to obtain a conducting nanocomposite is described, and the conducting particles are characterized. Core-shell particles [polystyrene-polyaniline (PANI)] have been obtained by the dispersion process from three types of polystyrene latexes: a no-cross-linked core stabilized by a nonylphenolethoxylate (NP40) and two cross-linked cores stabilized by NP40 and a mixture NP40/Surfamid (a surfactant bearing an amide group). The surface of these particles has been extensively characterized by X-ray photoelectron spectroscopy (XPS), atomic force microscopy, and scanning electron microscopy. A maximum coverage of 94% was obtained for the high PANI content as revealed by XPS analysis. A better coverage was obtained for the cross-linked polystyrene latex stabilized by the Surfamid. The amide group of this surfactant allows the H-bonding formation with the PANI backbone and, thus, improves the conductivity. It was shown that a uniform coverage of the core particles was not required to ensure a good conductivity.
Kohut-Svelko
Nicolas
N
LPCP-UMR 5067 and LCTPCM-UMR 5624, Hélioparc, 2 avenue du président Angot, 64053 Pau Cedex 9, France.
Reynaud
Stéphanie
S
Dedryvère
Rémi
R
Martinez
Hervé
H
Gonbeau
Danielle
D
François
Jeanne
J