Abstract
AbstractThe microemulsion systems composed of water/sucrose laurate/ethoxylated mono‐di‐glyceride/peppermint oil were formulated and characterized using electrical conductivity and small‐angle X‐ray scattering. The solubilization capacity of water in the oil is dependent on the surfactant mixing ratio. A static percolation phenomenon was observed in these systems and the water volume fraction percolation threshold was determined. A progressive transformation of water‐in‐oil to bicontinuous microemulsions, occurring upon dilution with water was revealed for equal amounts of sucrose laurate and ethoxylated mono‐di‐glyceride in the microemulsions. The periodicity, that is a characteristic length for the domain size of the microemulsions, increases linearly with the increase in the water volume fraction, whereas the correlation length, that is also a characteristic length for the domain size, increases with the increase in the water volume fraction up to a certain value then decreases.
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