Polyaniline prepared in ethylene glycol or glycerol

E.N. Konyushenko , Stephanie Reynaud (1) , Virginie Pellerin (1) , M. Trchová , J. Stejskal , I. Sapurina

1 IPREM - Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux

Oxidations of aniline or aniline hydrochloride have been carried out in ethylene glycol or glycerol and in their mixtures with water. Ammonium peroxydisulfate was used as oxidant. The oxidation of aniline is exothermic and changes in temperature were monitored to follow its progress. The effect of the solvents on the course of oxidation, morphology, and properties of final products has been studied by scanning electron microscopy, FTIR spectroscopy, and conductivity measurements. It is proposed that the reduc- tion of dielectric constant of the reaction medium results in the reduced dissociation of ionic species that take a part in oxidative polymerization. Consequently, the addition of an organic solvent has a similar effect as a decrease in the acidity of the reaction mixture. Conductivity and morphology depend on the mole ratio of oxidant and monomer, and the type and volume fractions of organic solvents, viz. ethylene glycol and glycerol, which were used in reactions Polyaniline prepared in ethylene glycol or glycerol.

Mots clés: Conducting polymer; Polyaniline; Nanotubes

Domaines: Matériaux; Chimie; Polymères; Chimie organique

E.N. Konyushenko, Stephanie Reynaud, Virginie Pellerin, M. Trchová, J. Stejskal, et al.. Polyaniline prepared in ethylene glycol or glycerol. Polymer, 2011, 52 (9), pp.1900-1907. ⟨10.1016/j.polymer.2011.02.047⟩. ⟨hal-01449187⟩