| 초록 |
We introduce a new method to stabilize oil-in-water (O/W) emulsions using an amphiphilic block copolymer, poly(ethylene oxide)-b-poly(ε-caprolactone) (PEO-b-PCL). Above the melting temperature of the hydrophobic segment, PEO-b-PCL can be dissolved in a polar oil. When the polymer/oil mixture is dispersed in water, PEO-b-PCL is irreversibly reorganized into solid nanostructures at the interface of the aqueous/organic phases. The resulting interfacial structures provide a robust physical barrier to the emulsion coarsening processes. Accordingly, the prepared emulsions exhibit excellent structural tolerance against external stresses, including variations in pH, ionic strength, and temperature. |
