Structure, thermodynamics and dynamics of the isotropic phase of spherical non-ionic surfactant micelles

► The results confirm that C12E8 micelles are spherical and do not grow with temperature. ► A relation between the effective volume fraction of micelles, concentration and temperature is given. ► It is observed that the interaction potential is more complicated than what was described. ► Information on the dynamics of these mixtures is provided. ► Concentrated solutions exhibit a viscoelastic behaviour.