الفهرس 
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Abstract
A series of nonionic surfactants were synthesized from gallic acid and polyethylene glycols with different molecular weights. Chemicals structures of the surfactants were confirmed using elemental analysis, infrared and nuclear magnetic resonance (IH-NMR) spectroscopy.
Surface activities of the surfactants in their solutions were determined by increased the surface activity of the surfactants in solutions. Measurements of interfacial tension between surfactants solutions and substrates with different polarity showed the type substrates plays functioning role on the interfacial properties. Thermodynamic properties of adsorption and micellization processes showed their tendency towards adsorption at solution interface and micellization in their solutions. Results showed reasonable surface activities compared to conventional nonionic surfactants.
The surface properties of the surfactant solutions including surface tension, efficiency, and critical micelle concentration, maximum surface excess and minimum surface area were calculated using surface tension-log concentration profiles.
The thermodynamic data revealed that the adsorption of the surfactant molecules at interfaces was more favorable than the bulk of their solutions.
The synthesized surfactant were evaluated with regard to preventing corrosion reaction of cobber in alkaline media.
Also, Two types of Triazole derived inhibitors were synthesized the first were synthesized from Triazole derivative and Salicyldahyde and second were synthesized from Triazola and Vanillin, their chemical structure were confirmed using elemental analysis, infrared and nuclear magnetic resonance (1H-NMR) spectroscopy and Corrosion inhibition efficiency were confirmed by weight loss.