الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
A series of nonionic surfactants was synthesized by esterification of the polyethylene glycol of different molecular weights with oleic acid and then the product was reacted with maleic anhydride and the produced ester reacted with poly triethanolamine. The chemical structures of the produced compounds were elucidated. The surface and thermodynamic properties of the synthesized compounds were determined based on the surface tension measurements of their solutions. The surface properties of the synthesized compounds showed their high activity at the interfaces which can be considered these compounds as good surfactants. Also the thermodynamic data showed the tendency of these compounds for adsorption at different interfaces and also toward micellization in the bulk of their solutions. The synthesized compounds were evaluated as corrosion inhibitors at different doses (25, 50, 100, 200, and 400 ppm) for carbon steel in acidic medium (1 M HCl) using the gravimetrical method (weight loss technique) and the polarization technique at 25 0C.The results of the corrosion inhibition measurements were promising and some of the synthesized compounds were closely in the inhibition efficiency as the commercial inhibitor and in similar doses.