Research Article
Study on the Preparation and Application of Lignin-Derived Polycarboxylic Acids
Table 1
The determination result of the content of functional groups of lignin.
| | Acid-precipitated lignin (%) | LPCAs (%) |
| -COOH | 9.02 ± 0.03 | 11.10 ± 0.03 | -OH (aliphatic) | 0.19 ± 0.03 | N/A | -OH (phenolic) | 4.23 | 1.50 | -OCH3 | 8.32 ± 0.03 | 4.90 ± 0.03 |
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