Sinha, Sujata published the artcileEffect of organic counter-ions on the surface activity, micellar formation and dye solubilization behaviour of cationic surfactants, Category: catalysis-chemistry, the publication is Indian Journal of Chemistry, Section A: Inorganic, Bio-inorganic, Physical, Theoretical & Analytical Chemistry (2002), 41A(5), 914-920, database is CAplus.
The effect of eight organic counterions (aliphatic, both mono and dicarboxylates) on the surface and micellar behavior of decyl and dodecyl ammonium carboxylates in aqueous solution has been examined by different physicochem. techniques such as surface tension, dye solubilization, conductance viscosity and NMR. The effect of these counter-ions as observed from surface activity, and critical micelle concentration (CMC) is explained in terms of their condensation /penetration onto/into the micelles. The decrease in CMC and increase in counter-ion binding of cationic surfactants is attributed to the increased hydrophobicity in alkyl chain of counter-ions. In the case of monocarboxylate counter-ions, CMC decreases significantly in the order: n-butyrate < propionate < acetate <formate, while for dicarboxylates decrease in CMC with increase in number of carbon atoms in the counter-ion is less substantial. Compared to monocarboxylates, dicarboxylate counter-ions condense strongly onto the micelle surface and thus are capable of being easily incorporated into the micelles and consequently show greater surface activity, and lower CMC of cationic surfactant. The effect of temperature on surface activity and micellar behavior of decyl ammonium succinate is also reported.
Indian Journal of Chemistry, Section A: Inorganic, Bio-inorganic, Physical, Theoretical & Analytical Chemistry published new progress about 2016-56-0. 2016-56-0 belongs to catalysis-chemistry, auxiliary class Active Esterification, name is Dodecylamineacetate, and the molecular formula is C7H13BrSi, Category: catalysis-chemistry.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia