Carbon Nanotubes Microenvironment in Ionic Surfactant Water Solutions

Abstract

The processes of aggregation of anionic (SDS) and cationic (CTAB) molecules into supramolecular formations and the effect of carbon nanotubes on the processes were investigated by conductometry and tensiometry methods. Concentration dependences of the specific electrical conductivity and surface tension of aqueous SDS and CTAB dispersions and suspensions of carbon nanotubes of the carbon nanomaterial Taunit in these dispersions were obtained. A conclusion on the change in the conformation of CTAB micelles in the presence of carbon nanotubes was drawn. A significant increase in the packing density of CTAB molecules and their ordering in the monomolecular layer at the water-air interface in the presence of carbon nanotubes was shown. In particular, this makes it possible to control the properties of the surfactant surface layer by means of carbon nanotubes.