Preparation and Application of Fluorinated Cationic Surfactants |
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| Authors: | M. Z. Mohamed |
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| Affiliation: | (1) Applied Surfactant Laboratory, Egyptian Petroleum Research Institute, Nasr City, Cairo, Egypt |
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| Abstract: | Four fluorinated cationic surfactants were prepared by condensing 2,2,3,3, tetrafluoro-1-propyl chloroacetate with stoichiometric amounts of pyridine, 2-hydroxypyridine, 8-hydroxyquinoline and 8-hydroxyquinaldine to produce four quaternary ammonium salts. The surface and biocidal properties of these surfactants were investigated. Surface properties of their solutions including surface tension, critical micelle concentration (CMC), effectiveness (Πcmc), maximum surface excess (Γmax) and minimum surface area (A min) were investigated with respect to different concentrations at 25 °C. Standard free energies of micellization and adsorption of the prepared surfactants in the aqueous solution were studied. The biocidal activity was determined via the inhibition zone diameter of prepared compounds which tested against six strains as a representative group of microorganisms. |
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| Keywords: | Critical micelle concentration Fluorinated cationic surfactants Biocidal activity |
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