Synthesis and Biocidal Activity of Some Naphthalene-Based Cationic Surfactants |
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Authors: | Ismail A Aiad Abdelfatah M Badawi Mohammed M El-Sukkary Abdallah A El-Sawy Ahmed I Adawy |
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Affiliation: | (1) Petrochemicals Department, Egyptian Petroleum Research Institute, Nasr City, Cairo, Egypt;(2) Faculty of Science, Chemistry Department, Benha University, Al Qalyubiyah, Egypt |
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Abstract: | In this study, different cationic surfactants were prepared by reacting dodecyl bromide with tertiary amines to produce a
series of quaternary ammonium salts that were converted subsequently to stannous and cobalt cationic complexes via complexing
them with stannous (II) or cobalt (II) ions. Surface properties such as surface- and interfacial-tension, and the emulsifying
power of these surfactants were investigated. The surface parameters including critical micelle concentration, maximum surface
excess, minimum surface area, tension lowering efficiency and effectiveness were studied. The free energy of micellization
and adsorption were calculated. Antimicrobial activity was determined via the inhibition zone diameter of the prepared compounds,
which was measured against six strains of a representative group of microorganisms. The antimicrobial activity of some of
the prepared surfactants against sulfate reducing bacteria was determined by the dilution method. FTIR spectra, elemental
analysis and a H1 NMR spectrum were examined to confirm compound structure and purity. The results obtained indicate that these compounds have
good surface properties and good biocidal effect on broad spectrum of micro organisms. |
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