Influence of conditions of polyaniline template synthesis on its distribution in perfluorinated membrane
Keywords:
perfluorinated sulfocationic membrane, aniline oxidative polymerization, template synthesis, polyaniline, surface morphology.Abstract
The aim of the present work was to establish the interrelation between preparation conditions of the composites on the base of Nafion-type perfluorinated membranes MF-4SK and polyaniline and distribution of the modifier in the basic matrix. The oxidative polymerization of aniline in perfluorinated membrane was carried out in static conditions and under the influence of concentration and electric fields. The monomer sorption by the MF-4CK membrane during the composites preparation was investigated, and the saturation degree of the basic matrix by aniline was evaluated. FTIR-spectroscopy, scanning electron and atomic force microscopies were applied to reveal the influence of polyaniline synthesis conditions on its distribution in the membrane. It was shown that the composites obtained in static conditions and under simultaneous action of electric and concentration fields had uniform distribution of the modifier in bulk and on surface of the membrane, while the synthesis under concentration field leads to formation of anisotropic material with gradient distribution of polyaniline.
