Influence of synthetic perfumes on stability of O/W emulsion in sodium dodecyl sulfate–n-dodecane–water ternary systems

Autor: Norimichi Kawashima, Naoki Watabe, Yoshikazu Tokuoka
Rok vydání: 2008
Předmět:
Zdroj: Colloid and Polymer Science. 286:769-776
ISSN: 1435-1536
0303-402X
Popis: Influence of synthetic perfumes having diverse chemical structures such as eugenol, linalool, benzyl acetate, α-ionone, α-hexylcinnamaldehyde, and d-limonene on stability of oil-in-water (O/W) emulsion composed of sodium dodecyl sulfate, n-dodecane, and water is investigated. Turbidity measurements of the O/W emulsion indicate that the emulsion is stabilized by adding the synthetic perfume, except for d-limonene, and that this tendency is remarkable in adding eugenol. The addition of the perfume, especially eugenol, shrinks oil droplets in the O/W emulsion, which inhibits coagulation and/or creaming of oil droplets. When adding eugenol, moreover, ζ-potential of oil droplets increases negatively, and viscosity of the external water phase of the emulsion rises drastically. The increment in ζ-potential and viscosity by the addition of eugenol also prevents oil droplets from coagulation and/or creaming and makes the O/W emulsion still more stable.
Databáze: OpenAIRE