- Effects of structural variations of non-ionic surfactants on micellar properties and solubilization: surfactants containing very long hydrocarbon chains
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Polyoxyethylene mono-ethers of dotriacontanol (C32E41) and 4,9-dimethyltritriacontanol (C35E40) have been synthesized. The micellar weights in water at 298K were 4.82 x 105 and 5.90 x 105, the aggregation numbers 212 and 260, and the levels of hydration 290 and 283 mol water mol-1 surfactant, respectively. The solubilization of azobenzene, cortisone acetate, griseofulvin, sulphadiazine, phenylbutazone, betamethasone, tolbutamide, and menaphthone was studied in 2% solutions of the above surfactants. The presence of large micelles did not result in increased solubilization; C32E41 and C35E40 had a lower solubilizing capacity than that of cetomacrogol.
- Arnarson,Elworthy
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p. 141 - 144
(2007/10/02)
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- Lacceryl laccerate: Major Wax Component Produced by Anomoneura mori Schwarz (Homoptera: Psyllidae)
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The major wax component secreted by Anomoneura mori Schwarz nymph was identified as laccerate, n-dotriacontyl n-dotriacontanoate.Its content in the wax 93.8percent.
- Kuwahara, Yasumasa
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p. 1297 - 1300
(2007/10/02)
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