A Comparative Study of the Inhibitory Effect of Gum Exudates from Khaya senegalensis and Albizia ferruginea on the Corrosion of Mild Steel in Hydrochloric Acid Medium
Table 8
FTIR spectrum of the corrosion product of mild steel in the presence of KS gum as an inhibitor.
Peak (cm−1)
Intensity
Assignment (functional group)
722.37
25.108
C-H oop due to aromatic bond
819.77
26.354
C-H oop due to aromatic bond
896.93
26.597
N-H wag due to primary or secondary amines
1026.16
24.095
C-O stretch due to alcohol, carboxylic acids, esters, and ethers
1220.98
24.462
C-O stretch due to alcohol, carboxylic acids, esters, and ethers
1381.08
22.733
C-H rock due to alkane
1600.97
20.221
C=C aromatic stretch
1902.84
20.51
C-H stretch due to phenyl ring substitution
1970.35
20.625
C-H stretch due to phenyl ring substitution
2170.95
19.653
C≡C stretch
2437.14
20.002
OH stretch
2600.13
19.521
OH stretch
3038.95
20.449
=CH stretch due to alkene
3144.07
21.063
OH stretch due to carboxylic acid
3289.7
21.852
C≡C stretch
3474.88
22.834
OH stretch due to alcohol or phenol
3607.97
22.261
OH stretch (free hydroxyl) due to alcohol or phenol
