ИСТИНА

It was shown, that multi-walled carbon nanotubes dispersing in polycarbonic acids aqueous solutions leads to their aggregates destruction and formation of their stable dispersions. For all studied polyacids MWCNT concentration in the dispersion increase monotonous with the increase of the MWCNT concentration added into polyacid solution. The dispersed MWCNT concentration is almost the same as added MWCNT concentration up to some added MWCNT concentration, i.e. its complete dispersion was observed. The addition of MWCNT at the concentration higher than mentioned above induces the considerable decrease of their amount in the dispersion (in several times) and MWCNT precipitation from the solution. This phenomenon can be explained as follows: after the addition of excess MWCNT amount they are soluilized by polyacid macromolecules already contained MWCNT, and such system loses the sedimentative stability.