conductivity of the solution is observed. There can be differentreasons for such behavior. First, maybe the TX-100 molecules formmicelles more easily than the CTAB ones or even replace some ofthe CTAB molecules in the micelles and because the degree of thedissociation of the CTAB molecules is higher in the monomeric statethan in the micelles, the conductivity of the solution increases.Second, TX-100 may cause the decrease of the counterion bindingdegree to the CTAB molecules in the micelle and the conductivityincrease too. Third, TX-100 may affect the aggregation number ofthe CTAB micelle. However, at the ethanol concentration higherthan its CAC, the influence of the TX-100 concentration in the mix-ture was not detected (Fig. 10). Such behavior of the conductivityas a function of the CTAB concentration confirms the suggestiondealing with the changes of the micelle size and the degree of theCTAB dissociation in the micelles and in the monomeric form