Effect of structural features of wood Biopolymers on hardwood pulping and bleaching performance
authors Pinto, PC; Evtuguin, DV; Neto, CP
nationality International
journal INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
keywords EUCALYPTUS-GLOBULUS LABILL; LIGNIN; BLEACHABILITY; BEHAVIOR
abstract Industrial hardwoods such as Eucalyptus species, Betula pendula, and Acacia mangium required different chemical charges during kraft pulping and presented distinct profiles of polysaccharides removal. The corresponding kraft, pulps showed different chlorine dioxide consumption during bleaching. Woods and corresponding kraft pulps were characterized by chemical methods, H-1 and C-13 NMR spectroscopy, X-ray diffraction analysis, and gel permeation chromatography. The ease of lignin degradation and dissolution was essentially determined by differences in the proportion of syringyl and guaiacyl units and in the degree of condensation. The bleaching response was shown to be related also to the content of beta-O-4 structures in the residual lignin. The relative stability of xylans during the pulping was suggested to be associated with differences in structure and molecular weight. The higher retention of Eucalyptus xylans was attributed essentially to their peculiar structure, including O-2-substituted uronic acid groups linked to other cell wall polysaccharides.
publisher AMER CHEMICAL SOC
issn 0888-5885
year published 2005
volume 44
issue 26
beginning page 9777
ending page 9784
digital object identifier (doi) 10.1021/ie0580760o
web of science category Engineering, Chemical
subject category Engineering
unique article identifier WOS:000234104600001
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  impact metrics
journal analysis (jcr 2019):
journal impact factor 3.573
5 year journal impact factor 3.684
category normalized journal impact factor percentile 69.58
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