Abstract: The self-diffusion coefficient, proton chemical shift and spin-lattice relaxation measurements show that the above mentioned parameters vary with concentration and showturning points which correspond to the cmc of each surfactant. The difference in variation of the chemical shifts of different resonance peaks of the surfactants provides description of the formation of micelles at a molecular level.

Key words: Self-diffusion coefficient, Critical micelle concentration, Surfactant, Molecular conformation