I read a article that used PS-PEO and chloroform as a solvent. In that article, interfacial tension decreased as concentration of polymer increased without plateau region(CMC).
Article Interfacial tension of evaporating emulsion droplets contain...
As far as I know, CMC(critical micelle concentration) is affected by solvent-surfactant interacton. If we use a solvent that is good for both hydrophilic and lipophilic part as the article above, i.e. some kinds of organic solvents, can cmc disappear?
Dear Hosu,
Yes, the CMC is not present in case the solvent solvates both hydrophobic and hydrohilic parts of the detergent. Micelles are formed because only one part of your amphiphilic molecule dissolves well whereas the other doesn't. If the solvent manages to solvate both equally well, there is no need to form micelles, hence you will not observe a CMC.
Kind regards, Leo
Hosu Gwak Leo Vleugels
The link provided by you does not investigate the micelle formation of polymers and surfactants. The surface, hydrodynamic instability is investigated. You need to deal with the article, and then ask the question and answer. What is the surface and volume instability arising in surfactant solutions can be found in the article
Article Liquid Polyamorphous Transition and Self-Organization in Aqu...
It is not true to say that "can cmc disappeared' but one should say that “there is no formation of micelles in some specific solvents”. Indeed, this is not surprising phenomenon because the formation of micelles occurs in order to decrease the free energy of the solution due to repulsion between solvent molecules and the head or tail of solute (hydrophilic and hydrophobic interactions).
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