Phase Studies in Cetyltrimethylammonium Bromide Solutions

Abstract

The results of viscosity, electrical resistance, light scattering, and density measurements involving mixtures of cetyltrimethylammonium bromide, potassium bromide, and water are reported. They refute one published suggestion that such mixtures consist of rather stable emulsions and another that they contain detergent crystallites. The results of the current work support the conclusion reached in an earlier study that rod-like surfactant micelles are formed upon the addition of sufficient KBr to cetyltrimethylammonium bromide solutions.