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Novel composite nanofilm of electropolymerization and self-assembling on AA5052 surface as anticorrosion coating

Fang Wang,Junjun Liu,Yanni Li,Yabin Wang

Electropolymerization nanofilm was prepared by cyclic voltammogram with 6 N , N -diallylamino-1,3,5-triazine-2,4-dithiol monosodium (DAN) on the AA5052 surface in 0.15 M NaNO 2 at 10°C, then octyl-triethoxysilane (OTES) film was fabricated on the poly(6 N , N -diallylamino-1,3,5-triazine-2,4-dithiol) nanofilm (PDA) covered AA5052 surface by self-assembling method to obtain the composite polymeric nanofilm (C-PDA/OTES). The composite polymeric nanofilm was characterized by means of FTIR spectra, scanning electron microscope (SEM), contact angle, and potentiodynamic polarization. The results showed that the C-PDA/OTES covered surface was more homogenous, compact, hydrophobic compared with PDA covered surface and had excellent protection efficiency. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012