Journal
CELLULOSE
Volume 12, Issue 1, Pages 43-50Publisher
SPRINGER
DOI: 10.1023/B:CELL.0000049347.01147.3d
Keywords
carbonyl groups; CCOA method; cellulose; fluorescence labeling; UV resonance Raman spectroscopy
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Apart from the reducing end groups, most celluloses contain small amounts of carbonyl groups in the mumol/g range, which are introduced into the material by a variety of preparation, processing and purification steps. By a combination of carbonyl-selective fluorescence labeling (CCOA method) and UV resonance Raman spectroscopy it was demonstrated that carbonyls in celluloses are not only present as a C=O structure with an SP2-hybridized carbon, but also to a significant extent in sp(3)-hybridized form as hydrates or hemiacetals.
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