Nuclear magnetic resonance studies of liquids morphology inside partially saturated porous media

In the present contribution we are investigating the relationship between liquid morphology and relaxation time distribution in partially saturated pores. The filling fluids are acetone (polar) and tetradecane (nonpolar). The porous sample is a silica glass (Vitrapor no. 5) with the nominal mean pore size is d = 1 μm (± 0.6 μm). All nuclear magnetic resonance relaxation experiments are performed at 20C using a NMR instrument operable at 20 MHz proton resonance frequency. The experimental results are compared with a two phase exchange model providing us information on the strength of surface relaxation.