Abstract
Schiff bases derived from the condensation reaction of benzaldehyde or anizaldehyde and diethylenetriamine were prepared. The products were neutralized with palmatic acid to pH 7. The chemical structures of the prepared compounds were confirmed using elemental analysis, FTIR, and 1H NMR spectroscopy. Various surface properties of the synthesized surfactants were evaluated particularly, critical micelle concentration, effectiveness, efficiency, maximum surface excess, and minimum surface area. These surfactants were also evaluated as corrosion inhibitors and biocide agents Gram positive and Gram negative bacterial strains. The rheological properties and the filter loss for oil-based mud (invert-emulsion mud) were evaluated. The result showed that they were good emulsifiers and filter loss control agents for oil-base mud. It was determined that they have good corrosion inhabitation for low carbon steel alloy and good bactericidal effect.
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