Abstract
A water-in-oil microemulsion was further dispersed in an aqueous phase containing Pluronic F127 as a steric stabilizer, to form a specific type of double emulsion termed emulsified microemulsion (EME). The inner microemulsion phase was made from glycerol-monooleate (GMO), R(+)-limonene, ethanol and glycerol. SAXS (small x-ray scattering), PGSE-NMR (pulse gradient spin echo-NMR), electrical conductivity, and cryo-TEM (cryogenic-transmission electron microscopy) imaging techniques were used to confirm the existence of inner W/O nano-droplets after second emulsification step and upon EME aging. Spherical globules of EME without long-range internal order were observed by the SAXS measurements and the cryo-TEM images. The average globule size of about 200-300 nm remained intact for at least 6 months.
Original language | English |
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Pages (from-to) | 1149-1157 |
Number of pages | 9 |
Journal | Journal of Dispersion Science and Technology |
Volume | 28 |
Issue number | 8 |
DOIs | |
State | Published - Nov 2007 |
Externally published | Yes |
Keywords
- Cryo-TEM
- Electrical conductivity
- Emulsified microemulsion
- Glycerol monooleate
- L-phase
- Microemulsion
- SAXS
- SD-NMR