Abstract
Two cosmetic oil-in-water emulsions with a stearyl phosphate emulsifier are examined by means of static and dynamic 1H and 31P NMR techniques. The interfacially bound emulsifier can be detected by high resolution (HR) NMR spectroscopy, whereas the excess emulsifier exists in one case as a solid lipid phase not detectable by this technique. This emulsion and the emulsifier raw material, consisting of monostearyl phosphate as well as distearyl phosphate, are examined by solid state cross polarisation magic angle spinning (CPMAS) NMR spectroscopy to prove the existence of solid emulsifier phases. In contrast, in the second emulsion the excess emulsifier together with a co-emulsifier forms an emulsifier gel network detectable by long-time high resolution 31P NMR spectroscopy and water self-diffusion measurements.
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Bartos, S. (2001) Thesis, Universität Hamburg
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© 2002 Springer Science+Business Media Dordrecht
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Plass, J., Emeis, D. (2002). Static and Dynamic NMR Studies on Cosmetic Emulsions. In: Fraissard, J., Lapina, O. (eds) Magnetic Resonance in Colloid and Interface Science. NATO Science Series, vol 76. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0534-0_32
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DOI: https://doi.org/10.1007/978-94-010-0534-0_32
Publisher Name: Springer, Dordrecht
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