An Approach to the Determination of Functional Groups in Oxidized Lignins by19F Nmr
- 1 January 1992
- journal article
- research article
- Published by Taylor & Francis in Journal of Wood Chemistry and Technology
- Vol. 12 (4) , 413-424
- https://doi.org/10.1080/02773819208545789
Abstract
Derivatization of an oxidized lignin sample by suitable fluoroaromatic compounds is described. Integration of the 19F NMR spectra of the derivatives allows the determination of the carboxyl content of the sample. Three reagents were investigated : 4-fluorobenzyl chloride, 4-fluorophenacyl bromide and 4-fluoro-phenyldiazomethyl ketone.Keywords
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