The temperature dependence of the critical micelle concentrations of cationic surface-active agents

Changes in self-assemblies induced by temperature concentration and light

“…In ionic surfactants, such a minimum was reported in the preliminary works of Goddard and Benson with a series of alkyl sulfates (44). Adderson and Taylor reported similar behavior for dodecylpyridinium bromide in aqueous solution (45); more recently, a series of alkyltrimethylammonium bromide was reported by Zielinski et al (46), a shown in Figure 3. In nonionic surfactants this U-shape behavior was also reported (47) for octylphenoxyethoxy ethanols and for polyoxyethylene surfactants; this is shown in Figure 4 (48,49).…”

Effect of Temperature on Micelle Formation in Aqueous NaBr Solutions of Octyltrimethylammonium Bromide

“…It means that the observed decrease in the value of G • m can be attributed mainly to the increase in the value of the RT term in Eq. [8] rather than to the effect of the temperature on the value of the CMC. The temperature coefficient, d( G …”

Effect of Hydrophobic Chain Length of Surfactants on Enthalpy−Entropy Compensation of Micellization

“…Only some of the experimental data of the temperature of minimum cmc, T min , have been reported and discussed in the literature. , There is, to the best of our knowledge, no systematic study on the relation between T min and the molecular structure of the surfactants. On the basis of our experimental cmc data 14 and the available data in the literature, ,− the dependence of T min on surfactant hydrophilic−lipophilic balance is discussed in section III. In section IV, the cmc data treatment of determining Δ G ° m , Δ H ° m , and Δ S ° m is described for both nonionic and ionic surfactants.…”