Synthesis of Water Soluble Hyperbranched Poly (amine-ester) as Corrosion Inhibitors for Steel

摘要

Encouraged by the excellent performance of dendrimers as scale inhibitors and anticorrisive coatings,we reasoned that dendrimers with properly designed structures might also be used as efficient watersoluble corrosion inhibitors. New kind of dendritic polyether water soluble were synthesized usingpentaerythritol tetracrylate as a precursor via Michael addition reaction with diethanolamine. The13 1 chemical structure of the prepared dendrimer was determined byFTIR, C and H NMR analyses.The inhibitive effect of HPAE-PEG600 on the corrosion of steel in 1 M HCl solution has beeninvestigated using potentiodynamic polarization and electrochemical impedance spectroscopy (EIS)techniques. The results indicated that HPAE-PEG600 inhibited the corrosion of steel and the extent ofinhibition increased with HPAE-PEG600 concentrations. Potentiodynamic polarization data suggestsmixed-mode of corrosion inhibition.