Why micelle not form in ethanol?

Answer 1

It was found that methanol and ethanol destabilize the formation of both micelles and the protein detergent complex.

{destabilize = can be moved easily}

no way - micelles form by the hydrophobic character of lipid tails but ethanol is not water and even though there is some polarity at the hydroxyl group it wouldn't be free enough (unobstructed) to push the fatty acids together - the ethanol chain would probably intermingle with the lipid chairs too

Answer 2

Micelles are formed when amphiphilic molecules arrange themselves in water to shield their hydrophobic tails from the surrounding solvent. In ethanol, the lack of polar interactions between molecules limits the formation of hydrogen bonds necessary for micelle formation. Ethanol's structure and properties do not favor the aggregation of amphiphilic molecules into micelles.