Molecular weight distribution study of delignification of spruce wood meal with chloroacetic acids
1997
Likon, M. | Zule, J. | Truden, M. | Moze, A. | Perdih, A. | Oblak-Rainer, M.
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 its molecular weight (MW) distribution was studied. Trichloroacetic acid gives rise to the lowest Mn (2,000-4,000), the lowest Mw (4,500-8,000), the lowest upper MW limit (approximately 40,000), and the lowest polydispersity (1.5-3.0) of lignin. The removed lignin is split by the tested acids to different extents.
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