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Erschienen in: Cellulose 6/2011

01.12.2011

Evolution of cellulose crystals during prehydrolysis and soda delignification of sugarcane lignocellulose

verfasst von: Carlos Driemeier, Maria T. B. Pimenta, George J. M. Rocha, Marcelo M. Oliveira, Danilo B. Mello, Priscila Maziero, Adilson R. Gonçalves

Erschienen in: Cellulose | Ausgabe 6/2011

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Abstract

This work investigates the evolution of cellulose crystals from sugarcane lignocellulose (bagasse and leaves) submitted to prehydrolysis (hydrothermal, dilute acid, or steam explosion) and soda delignifications. Raw and treated materials are characterized by X-ray diffraction with modeling of area-detector patterns. Three treatment effects are correlated: increase in cellulose content, quantified by strong acid hydrolysis; increase in average cellulose crystallite width, inferred from sharper 200 diffraction peaks; and decrease in crystallite distortion, evidenced by d 200-spacing approaching reference values. Crystal contents measured according to recent developments (in Driemeier and Calligaris, J Appl Cryst 44:184–192, 2011) are compared to cellulose contents. Limitations for this comparison are discussed. Results are consistent with minimum non-crystalline cellulose in raw lignocellulose, and with partial cellulose decrystallization or more defective crystallites in treated materials.

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Metadaten
Titel
Evolution of cellulose crystals during prehydrolysis and soda delignification of sugarcane lignocellulose
verfasst von
Carlos Driemeier
Maria T. B. Pimenta
George J. M. Rocha
Marcelo M. Oliveira
Danilo B. Mello
Priscila Maziero
Adilson R. Gonçalves
Publikationsdatum
01.12.2011
Verlag
Springer Netherlands
Erschienen in
Cellulose / Ausgabe 6/2011
Print ISSN: 0969-0239
Elektronische ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-011-9592-1

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