Liquid crystalline behaviour of N-cetyl N,N,N,-trimethyl ammonium bromide: An experimental study

Ultrasonic velocity, dielectric constant, specific conductance, viscosity, density and other related physical properties of a lyotropic liquid crystal namely N-cetyl N,N,N-trimethyl ammonium bromide (CTAB) in aqueous solution at various compositions have been studied. Solutions of different concentrations of CTAB in NaCl have been prepared. The change in miceller aggregation of the liquid crystal is indicated by the variation in the physical parameters within a range of concentration. Results have been used to elucidate the liquid crystalline behaviour of the compound in the solution.