Vibrational and diffusional behaviour of H2O molecules encaged in reversed micellar aggregates

Measurements performed by means of Small Angle Neutron Scattering (SANS), Incoherent Quasi Elastic Neutron Scattering (IQENS) and Fourier Transform Infrared (FTIR) techniques on reversed water-in-oil micelles are presented and analysed. This ternary system, constituted by water/surfactant Me+n(AOT)n/oil forms droplets whose shapes and sizes have been determined by SANS. Moreover a strong confinement effect for the H2O molecules, whose dynamical properties reflect themselves on the O-H stretching band (FTIR) and on the low frequency diffusive motions (IQENS), is revealed.