A new semi-empirical kinetic method for the determination of ion exchange constants for the counterions of cationic micelles

Quantitative Correlation between Counterion (X) Affinity to Cationic Micelles and X-Induced Micellar Growth for X = 2,4-; 2,5-; 2,6- and 3,4-Dichlorobenzoate Ions

“…iv is not due to theoretical consequence but rather due to empirical consequence just to take account for the physical reality that the hydrophilic counterions cannot completely i.e. 100 expel the hydrophobic counterions from ionic micellar pseudophase to bulk water phase at ≥ limiting concentration of the hydrophilic counterions 20,21 .…”

“…The purpose of the introduction of F X/S is just to take account for the physical reality that the hydrophilic counterions such as HO cannot expel completely i.e. 100 the hydrophobic counterions such as S from cationic micelles to the aqueous phase at ≥ the limiting concentration of the hydrophilic anions 20 . The limiting concentration of the counterions say X ions is defined as the optimum value of M 2 X at which k obs values become independent of MX in a typical plot of k obs vs. MX provided k 0 θ in Eq.…”

Kinetics and Mechanism of Cationic Flexible Nanoparticles (CFN) – Catalyzed Piperidinolysis of Anionic Phenyl Salicylate: CFN = TTABr/MX/H₂O with MX = NaCl, NaBr; C_nH_2n+1CO₂Na, n = 4, 5, 6 and 7

“…Within the domain of theoretical and conceptual aspects, described in detail elsewhere 23 , it can be easily shown that It is widely known that counterion binding to the ionic CFN are influence by a steric effect, b hydrophilic, and c hydrophobic interactions 34,40 . Hydrophobic counterions which are organic in nature prefers to be unhydrated in aqueous solutions, thus they bind strongly at the CFN interface and promote the CFN nanoparticles growth 41 .…”

Study of Cationic and Nonionic Mixed Micelles with NaBr and 3,5-Cl₂C₆H₃CO₂Na by Use of Probe Nucleophilic Reaction of Piperidine with Ionized Phenyl Salicylate

“…The values of K X/S and θ, obtained at different HDABr T , were calculated using equation 3 and are presented in where F X/S is an empirical constant and its appearance in equation 6 is described in detail elsewhere 34 , k W 2 represents second-order rate constant for the nucleophilic reaction of Pp with ionized PhSH PhS .…”