MOLECULAR-WEIGHT DISTRIBUTION STUDY OF DELIGNIFICATION OF SPRUCE WOODMEAL WITH CHLOROACETIC ACIDS

Authors
LIKON M ZULE J TRUDEN M MOZE A PERDIH A OBLAKRAINER M
Citation
M. Likon et al., MOLECULAR-WEIGHT DISTRIBUTION STUDY OF DELIGNIFICATION OF SPRUCE WOODMEAL WITH CHLOROACETIC ACIDS, Journal of wood chemistry and technology, 17(1-2), 1997, pp. 135-146
Citations number
16
Categorie Soggetti
Materials Science, Paper & Wood
Journal title
Journal of wood chemistry and technology → ACNP
ISSN journal
02773813
Volume
17
Issue
1-2
Year of publication
1997
Pages
135 - 146
Database
ISI
SICI code
0277-3813(1997)17:1-2<135:MDSODO>2.0.ZU;2-C
Abstract
The amount of lignin removed from spruce wood meal at 50 degrees C to 110 degrees C with mono-, di-, and trichloroacetic acid, as well as it s molecular weight (MW) distribution was studied. Trichloroacetic acid gives rise to the lowest M-n (2,000-4,000), the lowest M-W (4,500-8,0 00), the lowest upper MW limit (similar to 40,000), and the lowest pol ydispersity(1.5-3.0) of lignin. The removed lignin is split by the tes ted acids to different extents.