Our group has been working partially oxidized cellulose (oxcel) nanofibrils which form gels in aqueous formulations. Recently we have observed that these fibrils can be used to stabilise oil-in-water pickering emulsions, and the emulsions become more stable when either NaCl or sodium dodecylsulphate (SDS) are added to the suspensions. In aqueous suspensions both of these species cause the oxcel fibres to interact, forming clear, shear thinning gels, however in the pickering emulsions there is no apparent increase in viscosity, although they become less susceptible to break during centrifugation. Here we would like to determine the effect of adding salt and SDS to the emulsions by studying the oxcel structures at the droplet/water interface. Selective deuteration will enable us to highlight the oxcel walls, and the location of h- or d-SDS within them.