Polyaniline/clay conducting nanocomposite for use in protecting coatings

Nanomaterials have been shown highly promising materials for various technological applications. In engineering, may be noted the polymer nanocomposites, which are a new class of composite materials, where a nanoclay, or charge with nanometric dimensions, is dispersed in a polymer matrix at low concentration or volume. The clays are more common and when added in quantities less than 5% in the nanocomposites, cause a significant increase in these properties, such as mechanical, optical, magnetic barrier, and especially permeability and flammability. In this context, this work aimed at obtaining the polymeric nanocomposites of polyaniline (PAni) with different commercial clays (Cloisite Na+, 10A, 15A, 20A and 30B). The preparation of PAni-MMT nanocomposites was performed by in situ polymerization of aniline in acidic (HCl). Electrical conductivity measurements, FT-IR, TGA and X- ray diffraction were some of the techniques used to characterize the nanocomposites. (author)