Mixed surfactant systems. Part 1: micelle formation from mixtures of polyoxyethylene t-octylphenol and cationic surfactants was written by Varade, D.;Mody, S.;Ankleshwaria, H.;Bahadur, P.. And the article was included in Tenside, Surfactants, Detergents in 2003.SDS of cas: 104-73-4 This article mentions the following:
The critical micelle concentrations (c.m.c.) for the binary combinations of a nonionic surfactant polyoxyethylene t-octylphenol (TX-100) with nine cationic surfactants (varying in mol. characteristics) at different mole fractions in aqueous solutions, obtained by surface tension measurements, were analyzed using Rubingh’s regular solution theory. The values of interaction parameter (β) show marked interaction for cationic-nonionic systems. The cloud point of TX-100 increased remarkably in presence of trace amount of cationic surfactants. The magnitude of interaction and the increase in the cloud point of TX-100 solution is discussed in terms of nonpolar tail, polar head group size, and the size/polarizability of counter ions. Viscosity and conductance results support the interaction between cationic surfactants and TX-100 in water. In the experiment, the researchers used many compounds, for example, 1-Dodecylpyridin-1-ium bromide (cas: 104-73-4SDS of cas: 104-73-4).
1-Dodecylpyridin-1-ium bromide (cas: 104-73-4) belongs to pyridine derivatives. Pyridine’s the lone pair does not contribute to the aromatic system but importantly influences the chemical properties of pyridine, as it easily supports bond formation via an electrophilic attack. Pyridine derivatives are also useful as small-molecule α-helix mimetics that inhibit protein-protein interactions, as well as functionally selective GABA ligands.SDS of cas: 104-73-4