Research Article
Modification of Superabsorbent Hydrogels for Industrial Wastewater Treatment
Table 1
Characteristic bands of different functional groups in hydrogels.
| | Functional group | Frequency range (cm-1) | Reference (cm-1) |
| | –OH stretching of starch | 3450 | 3423 [26] | | C–O–C stretching of starch | 1020–1170 | 1022–1161 [26] | | C–H stretching of absorption | 2950 | 294 [26] | | C=O stretching of the carboxyl group of AAc | 1720 | 171 [26] | | –COOK in SAH | 1550 | 153 [33] |
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