Alkylethylene glycol

What are the most important factors influencing the type of microemulsion Here again we have to distinguish between nonionic and ionic surfactants. For nonionic surfactants, often alkylethylene glycols, temperature is the dominating parameter for the structure of a microemulsion. For ionic surfactants, mostly SDS or CTAB, the salt concentration dominates... 

We distinguish four types of surfactant. Anionic (e.g. SDS), cationic (e.g. CTAB), nonionic (e.g. alkylethylene glycols), and zwitterionic (e.g. phosphatidyl choline). Beside conventional surfactants, Gemini, bolafarm, oligomeric and polymeric surfactants become more and more important. 

Micellization is driven by the hydrophobic effect. Estimate from measured CMCs of alkylethylene glycols, the change in the Gibbs free energy for bringing one methylene group ( CH2 ) from an aqueous medium into the interior of a micelle. 

S Additional information <1> (<1> not alkylethylene glycols, only trace activity with l-thio-hexadecyl-2,3-propanediol [1,2] <1> not S-alkyl-al-kylglycerols, 2-hexadecylglycerol, 3-hexadecyl-sn-glycerol, 1-hexadecyl-ethylene glycol [1] <1> not 3-alkyl-sn-glycerols [2]) [1, 2]... 

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