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 |
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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 |
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