Influences of addition of hydrophilic surfactants on the W/O emulsions stabilized by lipophilic surfactants

- O/W/O multiple emulsions were formed in the emulsion system.
- Absorption changes of 1640 cm−1 and 3380 cm−1 indicate the morphologies changes.
- Micelles transport contributes to the inversion of W/O to O/W.