ISBN 9783843953757

978-3-8439-5375-7, Reihe Verfahrenstechnik

Nico Leister
Coalescence in Double Emulsions: Distinction of Coalescence Paths with Model Experiments

217 Seiten, Dissertation Karlsruher Institut für Technologie (2023), Softcover, A5

Zusammenfassung / Abstract

Double emulsion are a promising system for the encapsulation of water soluble actives in water based formulations. Achieving droplet stability against coalescence requires the use of two different species of surfactants. This work discusses the competitive adsorption of these two surfactants at the two differently curved interfaces found in double emulsions and the consequences on emulsion stability. The stability of the system is assessed through three different model experiments: Single droplets, microfluidic emulsions and single emulsions. The advantages and challenges of the measurement systems are discussed and formulations for stable double emulsions are suggested.