Novel Cationic Schiff Base Surfactants: Surface Studies and Biocidal Activities against Bacteria Fungi and Sulfate Reducing Bacteria

OVEL series of cationic Schiff base surfactants were synthesized. and characterized using microelemental analysis, FTIR and H-1-NMR spectra. The properties of the synthesized surfactant solutions such as critical micelle concentration (CMC), effectiveness (Pi(CMC)), surface excess concentration (Gamma(max)), surface area (A(min)) and free energy of micellization (Delta G(mic)) were determined using surface tension measurements. These Schiff base surfactants were evaluated for their antibacterial activity against Gram positive and Gram negative bacteria and fungi. The results of the biocidal activities revealed high potent action of the Schiff bases towards bacteria and fungi. The biocidal activity of the tested compounds against sulfur (sulfate) reducing bacteria (SRB) showed promising results in the area of oil field applications.