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Dissociation of phenolic groups in kraft lignin at elevated temperatures


Holzforschung 54(5): 519-527
Dissociation of phenolic groups in kraft lignin at elevated temperatures
The dissociation of the phenolic groups in a polydisperse, low molecular weight kraft lignin (Indulin AT) was studied in alkaline aqueous solutions in the temperature interval 21-70 degrees C, using a UV-spectrophotometric method. It was found that at a constant concentration of hydroxide ions, the degree of dissociation was decreasing when the temperature was elevated.


Accession: 003408723

DOI: 10.1515/hf.2000.088



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