A Study of the Aggregation Behavior of Hexyltrimethylammonium Bromide in Aqueous Solution

Structure of cationic surfactant micelles from molecular simulations of self-assembly

“…The fraction of bound counterions for the simulated system, calculated from the number of Br ions within the first peak of the N-Br RDF, was 0.61. This is close to, but somewhat lower than, several experimental estimates [37][38][39][40][41][42].…”

Electrophoretic properties of dodecyltrimethylammonium bromide micelles in KBr solution

“…The fractional micellar ionization should be considered as an approximate value, not only because of the simplifications involved in its determination, but also in view of the contribution arising from the very small ionic micelles in this study [14]. However, the values obtained reveal a modest increase when the amount of electrolyte was increased.…”

“…the CMC gave the fractional micellar ionization, a, which is the fraction of surfactant molecules in the micellar aggregate that does not have bound counterions [14]. Table 1 shows the CMC and a values obtained for DTAB at the four KBr concentrations tested.…”

Enthalpies of Micellization of Double Chain and Gemini Cationic Surfactants

“…In recent years, more and more studies (1)(2)(3)(4)(5) have shown that calorimetry, especially microcalorimetry, is the most sensitive technique for measuring the thermodynamic properties of micellar solutions directly and precisely. So far, study of the thermodynamics of micellization of alkyltrimethylammonium bromides (C X TAB) has made much progress, and the enthalpies of micellization have been obtained from microcalorimetry (6,7 (8,9) and on C 12 C 2 C 12 , C 12 C 6 C 12 Br 2 and C 12 C 10 C 12 Br 2 by Grosmaire et al (10). In this letter, we will report the CMCs and the enthalpies of micellization of C 12 C 6 DAB and its dimer (C 12 C 12 C 12 Br 2 ), C 14 C 4 DAB, and C 16 C 2 DAB.…”