Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: March 22, 2009
Publication Date: March 26, 2009
Citation: Finkenstadt, V.L., Kenar, J.A., Fanta, G.F. 2009. Corrosion Protection of Steel by Thin Coatings of Starch-oil Emulsions [abstract]. 237th National Meeting of the American Chemical Society, March 22-26, 2009, Salt Lake City, Utah. CELL 51. Technical Abstract: Corrosion of materials is one of the most serious and challenging problems faced worldwide by industry. This research investigated the inhibition of corrosive behavior by jet-cooked starch-soybean oil composites on SAE 1010 steel. Electrochemical Impedance Spectroscopy (EIS) was used to evaluate the corrosion inhibition of coatings with different oil loading (0, 10, 25 and 50% w/w) and coating thickness (0, 0.5, 2 and 10 mg/cm2). At high oil loading, thicker coatings exhibited oil separation. EIS of control corn starch samples (0% soybean oil) indicated minor protection up to approximately twice that of bare steel. The coatings were highly variable thus no linear correlation for oil loading or thickness was noted. The coating with 25% soybean oil and 0.5 mg/cm2 thickness showed the maximum protection level of all samples (approximately 10x that of bare steel).