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- Title
Influence of Processing on the Physical Stability of Multiple Emulsions Containing a Green Solvent.
- Authors
García, María Carmen; Muñoz, José; Alfaro, María Carmen; Franco, José María
- Abstract
The influence of the emulsification process on the microstructure and physical stability of model water-in-oil-in-water (W/O/W) emulsions formulated with a green solvent and a mixture of amphiphilic copolymers as emulsifiers was investigated. Emulsions were prepared by applying a homogenization step with a rotor-stator device followed by high-pressure homogenization. Viscous flow tests, transmitted light optical microscopy, globule size distribution (GSD), and multiple light scattering (MLS) measurements were carried out. The GSDs obtained were the result of a recoalescence due to overprocessing and the coalescence of inner droplets with the outer water phase. MLS detected a main destabilization mechanism by creaming. The passing of the emulsion through a high-pressure homogenizer (HPH) significantly delayed the creaming process.
- Subjects
MICROEMULSIONS; SURFACE active agents; STABILIZING agents; SEPARATION (Technology); SOLVENTS
- Publication
Chemical Engineering & Technology, 2016, Vol 39, Issue 6, p1137
- ISSN
0930-7516
- Publication type
Article
- DOI
10.1002/ceat.201500283