Water mobility in heterogeneous emulsions determined by a new combination of confocal laser scanning microscopy, image analysis, nuclear magnetic resonance diffusometry, and finite element method simulation

N. Lorén*, H. Hagslätt, M. Nydén, A. -M. Hermansson

*Corresponding author for this work

Research output: Contribution to journalArticle

23 Citations (Scopus)
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Abstract

Nuclear magnetic resonance (NMR) diffusometry and confocal laser scanning microscopy (CLSM) were combined in a quantitative way in finite element calculations of water propagation in CLSM images obtained from a very heterogeneous emulsion. The propagators calculated on the basis of microstructure were Fourier transformed and subsequently compared with the echo decays obtained by the NMR diffusometry method. The results showed very good agreement between microstructure based calculations and experiments, indicating that the short gradient pulse approximation in the NMR diffusometry experiment holds for a certain q range. Furthermore, the CLSM was able to achieve a relevant two-dimensional microstructure although some discrepancy at low q values was noted. This effect is attributed to the inherent three-dimensional connectivity between the water domains in this type of structures, making the calculations slightly underestimate the water diffusion at longer distances.

Original languageEnglish
Article number024716
Number of pages10
JournalJournal of Chemical Physics
Volume122
Issue number2
DOIs
Publication statusPublished - 8 Jan 2005
Externally publishedYes

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