Surface and thermodynamic studies of N-((octyl, dodecyl, and cetyl) oxycarbonylmethyl) pyridinium bromide

Article abstract of DOI:10.1007/BF00807255

N-Octyloxycarbonylmethyl pyridinium bromide (C₈), N-dodecyloxycarbonylmethyl pyridinium bromide (C₁₂) and N-cetyloxycarbonylmethyl pyridinium bromide (C₁₆) were prepared. Several studies were carried out with their aqueous solutions. Surface tensions, electrical conductivities, and biodegradabilities were evaluated. The antibacterial and antifungal activities of the cationic surfactants were studied. Surface properties, particularly critical micelle concentration (CMC), effectiveness (Π_CMC), efficiency (P_c20), maximum surface excess (Γ_max), and minimum surface area (A_min) were investigated at different concentrations at 20, 35, and 50°C respectively. Free energies, enthalpies, entropies of micellization, and adsorption of the surfactants in the aqueous solution were studied.