Organogel from L-leucine-containing surfactant in nonpolar solvents |
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Authors: | K Hanabusa H Kobayashi M Suzuki M Kimura H Shirai |
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Institution: | (1) Faculty of Textile Science and Technology Shinshu University Ueda 386 Japan, JP |
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Abstract: | Alkyl (S)-2-ammonium-2-isobutylacetate p-toluenesulfonate formed organogel in nonpolar solvents. The gels exhibited thermally reversible sol–gel phase transitions.
UV spectroscopic study suggested that dodecyl (S)-2-ammonium-2-isobutylacetate p-toluenesulfonate forms reversed micelle-like aggregate at low concentration in a nonpolar solvent. Circular dichroism spec-troscopy
indicated that component molecules of the reversed micelle-like aggregate are cooperatively organized and result in chiral
aggregate. The huge fibrous aggregate responsible for gelation was observed with transmission electron microscopy. The accumulation
and rearrangement of reversed micelle-like aggregate resulted in the formation of huge fibrous aggregates. A gathering of
numerous fibrous aggregates formed the three-dimensional network to immobilize the isotropic liquid.
Received: 24 June 1997 Accepted: 3 October 1997 |
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Keywords: | Gels organogels gelation surfactant amino acid |
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