A homologous series of cationic
surfactants were synthesized and characterized by spectral studies, mass, IR, 1H
NMR, 13C NMR, 2D NMR and elemental analysis. The surface activities
of these amphiphiles were measured, including surface tension (γ), critical micelle concentration
(CMC), effectiveness (pcmc), efficiency (PC20), maximum surface
excess (Γmax) and minimum
surface area (Amin) at 25℃. Adsorption and micellization free
energies of these amphiphiles in their solutions showed a good tendency towards
adsorption at the interfaces. The synthesized amphiphiles showed good antimicrobial
activity.
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