Study of a nanocomposite based on a conducting polymer: Polyaniline

N. Kohut-Svelko , Stephanie Reynaud (1) , Rémi Dedryvère (1) , Hervé Martinez (1) , Danielle Gonbeau (2, 1) , Jeanne François (1)

1 IPREM - Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux
2 LCTPCM - Laboratoire de Chimie théorique et Physico-chimie moléculaire

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.

Mots clés: Atomic force microscopy; Conducting polymers; Crosslinking; Hydrogen bonds; Intrinsically conducting polymers (ICP); Monomers; Nanostructured materials; Organic polymers; Polystyrene latexes; Scanning electron microscopy; Seed latexes; Surface active agents; Synthesis (chemical); X ray photoelectron spectroscopy

Domaines: Chimie; Matériaux

N. Kohut-Svelko, Stephanie Reynaud, Rémi Dedryvère, Hervé Martinez, Danielle Gonbeau, et al.. Study of a nanocomposite based on a conducting polymer: Polyaniline. Langmuir, 2005, 21 (4), pp.1575--1583. ⟨10.1021/la0481243⟩. ⟨hal-01503999⟩