Corrosion inhibition of particulate and tubular polyaniline in polyvinyl butyral for mild steel protection
Document Type
Article
Publication Date
4-1-2023
Abstract
Currently available anticorrosion additives for metals consist of chromates that present safety concerns due to their toxicity. Thereby, this study investigated an environmentally friendly substitute coating additive of particulate and tubular polyaniline (PANI) in the polyvinyl butyral (PVB) coating. The PANIs were analysed by TEM, FT-IR and BET surface area analysis. Electrochemical impedance spectroscopy (EIS) and Tafel polarisation analyses were conducted to evaluate the coating performance in 3.5 wt% NaCl solution for 30 days. The higher surface area of tubular PANI successfully inhibits the corrosion of mild steel by having the lowest corrosion rate at (5.730 +/- 0.819) x 10-4 mm/year compared to particulate PANI as an anticorrosion additive in the PVB coating.
Keywords
Coating, Corrosion, Electrochemistry, Polyaniline
Divisions
nanotechnology
Publication Title
Materials Letters
Volume
336
Publisher Location
RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS