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Monitoring of Osmotic Swelling Induced Filling Degree Changes in WOW Double Emulsions Using Raman Technologies

Hufnagel, Thomas 1; Leister, Nico ORCID iD icon 2; Stoy, Richard; Rädle, Matthias; Karbstein, Heike P. 2
1 Karlsruher Institut für Technologie (KIT)
2 Institut für Bio- und Lebensmitteltechnik (BLT), Karlsruher Institut für Technologie (KIT)

Abstract:

Due to their nested structure, double emulsions have the potential to encapsulate value-adding substances until their application, making them of interest to various industries. However, the complex, nested structure negatively affects the stability of double emulsions. Still, there is a lack of suitable measurement technology to fundamentally understand the cause of the instability mechanisms taking place. This study presents a novel measurement method to continuously track filling degree changes due to water diffusion in a water-in-oil-in-water (W1/O/W2) double emulsion droplet. The measurement method is based on the Raman effect and provides both photometric and spectrometric data. No sample preparation is required, and the measurement does not affect the double emulsion droplet.


Verlagsausgabe §
DOI: 10.5445/IR/1000158249
Veröffentlicht am 27.04.2023
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Bio- und Lebensmitteltechnik (BLT)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2023
Sprache Englisch
Identifikator ISSN: 2227-9040
KITopen-ID: 1000158249
Erschienen in Chemosensors
Verlag MDPI
Band 11
Heft 4
Seiten Art.-Nr.: 206
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Vorab online veröffentlicht am 25.03.2023
Schlagwörter Raman photometry; Raman spectroscopy; monitoring instability effects; multiple emulsion; WOW emulsion; filling degree; microfluidic; glass capillary devices
Nachgewiesen in Web of Science
Dimensions
Scopus
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