Polyether-modified siloxane stabilized dispersion system on the physical stability and control release of double (W/O/W) emulsions

Controlling the Stability and Rheology of Copolyol Dispersions in Fatty Alcohol Ethoxylate (AEO9)-Stabilized Multiple Emulsions

“…Previous studies also showed that most W/O/W emulsions have a direct correlation with the dispersion droplets. That is, the smaller the dispersed droplet size, the thick the multiple emulsion to be. , However, the result of our data indicated that this is not always true. The increase in the viscosity of W/O/W emulsions becomes significant at (1.1 wt %) than (4.5 wt %) for AEO9 concentrations (Figure b).…”

“…Then, it was exported to Origin (Origin Lab Co., Pro 8.5) for graphing, which was used as error bars. The error bar, in each case, indicates the standard deviation among the samples …”

“…The error bar, in each case, indicates the standard deviation among the samples. 13 2.5. Rheological and Viscoelastic Measurements.…”

“…Similarly, Isolan GPS (polyglyceryl-4 diisostearate polyhydroxy-stearate sebacate) is a low molecular weight polymer with a known branched structure of polyhydroxy stearates. The availability of this structure improves compatibility with other emulsifiers when used as a cosurfactant for many cosmetic applications and also promotes lower viscosity emulsions . Besides, the outer aqueous phase (oil-in-water) comprising AEO9 is equally important for the stability of W/O/W emulsions. , The study by Jaimes-Lizcano et al have reported the formulation of multiple emulsions based on three different silicon polymeric surfactants (as W/O stabilizers) and polyoxyethylene (20) cetyl ether (for outer water stabilizer) .…”

Thermoresponsive Water-in-Oil-in-Water Pickering Double Emulsions Stabilized with Biodegradable and Semicrystalline Poly(ethylene glycol)-b-poly(ε-caprolactone-co-δ-valerolactone) Diblock Copolymer Micelles for Controlled Release

“…When the dispersed phase droplets include one or more kinds of minor dispersed droplets, the resulting three-phase route is called a double emulsion. − Water-in-oil-in-water (W/O/W) emulsions, the most prevalent sort of double emulsions (DEs), can encapsulate, protect and deliver large amounts of hydrosoluble and liposoluble active ingredients, such as drugs and nutrients garnering immense attention in pharmaceuticals, foods, and cosmetics. − DEs have potential advantages in compositional control, encapsulation efficiency, loading level, and multistage drug release by comparison with other colloidal carrier systems, such as micelles, polymersomes/vesicles, , etc. However, traditional DEs stabilized by small-molecule surfactants are thermodynamically unsteady because of the interchange of surfactants between exterior and interior oil/water interfaces and the drainage of liquid films between droplets, impeding their industrial applications. , To overcome these drawbacks, introducing particulate emulsifiers within a double emulsion system to construct a “Pickering double emulsion” has been suggested. , Under the capability to strongly adsorb at the oil/water interface and provide a viscoelastic barrier, amphiphilic colloidal particles can be employed to stabilize one or more oil/water interfaces, thereby enhancing the microstructural integrities and physical stabilities of the DEs …”