Polymers Decorated with Functional Motifs for Mitigation of Steel Corrosion: An Overview

Table 2

Functionalized chitosan as eco-friendly CIs in different corrosive media.

Inhibitor	Concentration	Material	Test conditions	Maximum efficiency	Test technique	References
CS	200 ppm	MSteel	1 M H3NSO3, 35°C	73.8%	WL	[142]
CS+KI	200 ppm (CS)+5 ppm (KI)	MSteel	1 M H3NSO3, 35°C	91.7%	Tafel	[142]
CS-TS	200 ppm	MSteel	1 M HCl, 35°C	92.5%	EIS	[143]
CS-TCH	200 ppm	MSteel	1 M HCl, 35°C	93.2%	EIS	[143]
CS-PEG	200 ppm	MSteel	1 M HCl, 35°C	93.9%	Tafel	[144]
CS-PEG	250 ppm	MSteel	1 M H3NSO3, 35°C	94.0%	Tafel	[145]
CSB-1^a	150 ppm	MSteel	1 M HCl, 30°C	88.5%	WL	[146]
CSB-2^b	150 ppm	MSteel	1 M HCl, 30°C	89.9%	WL	[146]
CSB-3^c	150 ppm	MSteel	1 M HCl, 30°C	91.7%	WL	[146]
CS-AMT	250 ppm	MSteel	1 M HCl, 35°C	96.6%	EIS	[147]
CS-TCH	1000 ppm	Stainless steel (SSteel)	3.5% NaCl, RT	98.0%	Tafel	[148]
CS-EN	0.1%	CSteel	5% HCl	90.0%	WL	[149]
CS-MAA-TN	0.1%	CSteel	5% HCl	84.0%	EIS	[149]

^aBenzaldehyde-CSB, ^b4-(dimethylamino)benzaldehyde-CSB, and ^c4-hydroxy-3-methoxybenzaldehyde-CSB.