Aggregation States and Dynamics of Nonionic Polyoxyethylene Surfactants
The nonionic polyoxyethylene ether (POE) surfactants exhibit solvent dependent aggregation states1,2 . Solvents with two or more potential hydrogen bonding centers like ethylene glycol3 and form-amide4– 6 promote micelle formation similar to that in water. In contrast, in aliphatic hydrocarbon solvents, such as cyclohexane or decane, reverse (or inverted) micelles may form2,7. However, polar solvents with a single hydrogen bonding center do not appear to support micelle formation4 , and several reports describe the destruction of micelles by the lower alcohols, ethanol and methanol8,11.
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