A novel reverse worm-like micelle from a lecithin/sucrose fatty acid ester/oil system |
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Authors: | Kaname Hashizaki Hiroyuki Taguchi Yoshihiro Saito |
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Affiliation: | (1) College of Pharmacy, Nihon University, 7-7-1 Narashinodai, Funabashi Chiba, 274-8555, Japan |
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Abstract: | We report a novel method for forming reverse worm-like micelles in nonpolar organic solvents. This method requires the addition of trace amounts of a sucrose fatty acid ester (SFE), in addition to lecithin and a nonpolar organic solvent. The region in which these micelles formed increased with lecithin concentration and hydrophobicity of SFE. In addition, zero-shear viscosity (η 0) of the reverse worm-like micelles increased rapidly upon addition of SFE, reaching 1–3 million times the viscosity of n-decane. Furthermore, the change in η 0 was examined in detail by performing dynamic viscoelasticity measurements. Results showed that the η 0 of solution increased upon addition of SFE because both the length and number of reverse worm-like micelles increased along with SFE concentration. |
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Keywords: | Reverse worm-like micelle Sucrose fatty acid ester Lecithin Small angle X-ray scattering Phase diagram Rheology |
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