The drop size distribution (DSD) of an emulsion has influence on the physical stability, the color, and the rheological behavior of the emulsion and is therefore an important means of characterization.
The DSD can be measured with various methods. In principle one can distinguish between methods which measure physical characteristics of single drops or physical characteristics of the bulk emulsion. The latter are often used for the characterization of an emulsion in terms of quality control where it is only necessary to notice differences between a reference and a product or where it is sufficient to attain the DSD results only after a calibration against a system with known DSD. Examples are rheological behavior, dielectric spectrometry, dynamic scanning calorimetry, focused beam reflectance, or dynamic reflection measurements. An advantage of these methods is often that they are fast and may be used online or at least without diluting the sample.
For the measurement of DSD, a...
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Gaukel, V., Bernewitz, R., Schuchmann, H. (2016). Emulsions’ Drop Size Distribution, Measurement of. In: Drioli, E., Giorno, L. (eds) Encyclopedia of Membranes. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-44324-8_1885
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