Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Poly(Vinyl Butyral-co-Vinyl Alcohol-co-Vinyl Acetate) Coating Performance on Copper Corrosion in Saline Environment

Version 1 : Received: 18 December 2019 / Approved: 20 December 2019 / Online: 20 December 2019 (07:00:55 CET)

A peer-reviewed article of this Preprint also exists.

Samide, A.; Merisanu, C.; Tutunaru, B.; Iacobescu, G.E. Poly (Vinyl Butyral-Co-Vinyl Alcohol-Co-Vinyl Acetate) Coating Performance on Copper Corrosion in Saline Environment. Molecules 2020, 25, 439. Samide, A.; Merisanu, C.; Tutunaru, B.; Iacobescu, G.E. Poly (Vinyl Butyral-Co-Vinyl Alcohol-Co-Vinyl Acetate) Coating Performance on Copper Corrosion in Saline Environment. Molecules 2020, 25, 439.

Journal reference: Molecules 2020, 25, 439
DOI: 10.3390/molecules25030439

Abstract

Poly(vinyl butyral-co-vinyl alcohol-co-vinyl acetate) named further PVBA was investigated as protective coating for copper corrosion in 0.9 % NaCl solution using electrochemical measurements such as, electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization associated with Atomic Force Microscopy (AFM). The PVBA coating on the copper surface (Cu-PVBA) was modeled in methanol containing PVBA. Its inhibitory properties against corrosion was comparatively discussed with those of the copper sample treated in methanol without polymer (Cu-Me) and of untreated sample (standard copper). A protective performance of PVBA coating of 80 % was computed from electrochemical measurements, for copper corrosion in NaCl solution. Also, AFM images designed a specific surface morphology of coated surface with PVBA, clearly highlighting a polymer film adsorbed on the copper surface, which presents certain deterioration after corrosion, but metal surface was not significantly affected compared to those of untreated samples or treated in methanol, in the absence of PVBA.

Subject Areas

adsorption; coatings; poly(vinyl butyral-co-vinyl alcohol-co-vinyl acetate); corrosion tests; atomic force microscopy

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