NMR Diffusive Diffraction Studies of Emulsions
نویسندگان
چکیده
1. Introduction Droplet concentration, size, polydispersity, and interfacial properties/interactions are key features which influence emulsion characteristics such as stability, texture and appearance [1]. Several techniques are available for measuring these features [2-6] however nuclear magnetic resonance (NMR) is particularly suited to studying the structure of emulsions because it is non-invasive and it can measure highly concentrated and opaque emulsions. One way in which NMR can be used to study emulsions is by measuring the translational diffusion of molecules confined within the droplets. Under certain experimental conditions, the results of the NMR measurements display coherence features analogous to optical diffraction. These coherence features can be used to determine morphological characteristics of the emulsion. Here we have used NMR diffusive diffraction coherence features to determine structural characteristics of a highly concentrated emulsion and discuss factors which impede accurate quantification.
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