H-1 AND C-13 NMR CHARACTERIZATION OF LIGNINS FROM NSSC COOKING WITH LIGNIN ADDITIVE

Authors
KOSIKOVA B JONIAK D HRICOVINI M MLYNAR J ZAKUTNA L
Citation
B. Kosikova et al., H-1 AND C-13 NMR CHARACTERIZATION OF LIGNINS FROM NSSC COOKING WITH LIGNIN ADDITIVE, Holzforschung, 47(2), 1993, pp. 116-122
Citations number
25
Categorie Soggetti
Forestry,"Materials Science, Paper & Wood
Journal title
Holzforschung → ACNP
ISSN journal
00183830
Volume
47
Issue
2
Year of publication
1993
Pages
116 - 122
Database
ISI
SICI code
0018-3830(1993)47:2<116:HACNCO>2.0.ZU;2-L
Abstract
Structural changes of the residual and dissolved lignins from NSSC coo ks of beech wood were examined with and without the oxidized lignin as pulping additive. Quantitative H-1 and C-13 NMR analysis in combinati on with DEPT pulse sequence allowed to determine the effect of oxidize d lignin on degradation and condensation reactions of lignin macromole cule. All results are discussed with reference to structural features of lignin preparations of NSSC/AQ pulping.