Study of polyelectrolyte-ionic surfactant interactions was written by Barany, Sandor;Bader, Imre;Pakhar, Tatyana. And the article was included in Magyar Kemiai Folyoirat in 2002.Quality Control of 1-Dodecylpyridin-1-ium bromide This article mentions the following:
Using viscosity, elec. conductivity, light transmittance and electrophoresis methods, the interactions between cationic/anionic polyelectrolytes of different charge d. and mol. mass and ionic surfactants in aqueous and electrolyte solutions were studied. Strong interactions between components are observed due to electrostatic attraction between oppositely charged polymers and surfactants, which are manifested by a substantial reduction of solution viscosity and light transmittance as well as by a relative decease in conductivity of the systems. With increasing the surfactant content, the formed polyelectrolyte-tenside complexes precipitate and then dissolve again. For highly charged polyelectrolytes a wide destabilization zone is observed and at high surfactant concentrations only partial dissolution of insoluble complexes takes place. In this region the ratio between charges of surfactant and polyelectrolyte reaches 3-4. With increasing the C atom numbers in the surfactant mol., the concentration of the surfactant at which reduction in system viscosity and light transmittance occurs diminishes. This is an evidence of the important role of hydrophobic interactions in binding and cooperation between adsorbed surfactant mols. As a result of operation of these forces also interactions between high mol. anionic polyelectrolytes and anionic surfactants take place. In the experiment, the researchers used many compounds, for example, 1-Dodecylpyridin-1-ium bromide (cas: 104-73-4Quality Control of 1-Dodecylpyridin-1-ium bromide).
1-Dodecylpyridin-1-ium bromide (cas: 104-73-4) belongs to pyridine derivatives. Pyridine has a dipole moment and a weaker resonant stabilization than benzene (resonance energy 117 kJ璺痬ol閳? in pyridine vs. 150 kJ璺痬ol閳? in benzene). Pyridine derivatives are also useful as small-molecule 浼?helix mimetics that inhibit protein-protein interactions, as well as functionally selective GABA ligands.Quality Control of 1-Dodecylpyridin-1-ium bromide