Stable suspensions of carbon nanoparticles in polyaniline solutions in N methylpyrrolidone were compared with the suspensions in aqueous solutions of cetyltrimethylammonium bro mide using spectrophotometry in UV-Vis-NIR regions. Polyaniline in low concentrations in N methylpyrrolidone was found to be a more efficient surfactant than cetyltrimethylammonium bromide in water. Analysis of the optical spectra of suspensions of carbon soots in solutions of the polymer made it possible to reveal a noticeable change in the spectra of the starting polyaniline and nanotubes, indicating the chemical interaction of polyaniline with the carbon nanotubes.
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