Research Article
Nucleophilic Addition of Reactive Dyes on Amidoximated Acrylic Fabrics
Table 4
FT-IR characteristic absorption peaks of modified acrylic fibers, RR84, and modified acrylic fabrics dyed with RR84.
| Peak assignment | Wavenumber (cm−1) | Modified acrylic fibers | RR84 | Modified acrylic fibers dyed with RR84 |
| N–O stretching, amidoxime | 947 | — | 926 | C=N stretching, amidoxime | 1594 | — | 1632 overlapped with C=C aromatic and C=O amide | OH and NH2 stretching, amidoxime | 3150–3550, broad | — | Present with more intensity | CN stretching, nitrile | 2243 | — | 2243 | C=C aromatic, C=O amide | — | 1585, 1626, 1662 | Overlapped with C=N amidoxime with less intensity at 1632 | C–Br stretching | — | 831 | Present with less intensity at 848 |
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