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Non-crystalline forms of cellulose in birch pulp, cotton linters and Cladophora sp were studied by CP/MAS 13 C NMR spectroscopy. New assignments were made for the NMR-signals in the lower shift part of the C-4 region (80-86ppm). These signals were assigned to cellulose at accessible fibril surfaces, cellulose at inaccessible fibril surfaces and hemicellulose. Also, further evidence was...
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