Abstract
The influence of 13 linear alcohols from methanol to hexadecanol and 20 fragrance molecules on the phase inversion temperature (PIT) of the Brij30/n-octane/water emulsion system was investigated and sorted out using the hydrophilic lipophilic deviation (HLD) concept. Effect of the hydrophobic chain structure and nature of polar function is discussed. Among the various fragrance molecules, alcohols are very efficient to reduce the PIT of emulsion whereas acetals, esters and ketones have no effect and even sometimes, some of them increase it a little. Phenols exhibit an even more dramatic effect since only 0.4% decrease the PIT of 19 °C. Experimental results are rationalized in terms of structural parameters of fragrance molecule.
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