Nucleophilic Addition of Reactive Dyes on Amidoximated Acrylic Fabrics

Table 2

FT-IR characteristic absorption peaks of modified acrylic fibers, RB19, and modified acrylic fabrics dyed with RB19.

Peak assignment	Wavenumber (cm^−1)
	Modified acrylic fibers	RB19	Modified acrylic fibers dyed with RB19
N–O stretching, amidoxime	947	—	930
C=N stretching, amidoxime	1594	—	1575
OH and NH2 stretching, amidoxime	3150–3550, broad	—	Present with less intensity
CN stretching, nitrile	2243	—	2243
S=O stretching, suffonic group	—	1040, 1140, 1228	Present overlapped with less intensity at 1228
C=O, C=C, conjugated carbonyl with aromatic	—	1500–1670	Present overlapped with less intensity at 1659