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Items for "deacetylation"

Dissolution of fibre material in alkaline pre-treatment and refining of spruce CTMP

The chemistry of chemithermomechanical pulping (CTMP) was assessed by chemical pre-treatment of spruce chips, followed by laboratory-scale refining...

Keywords: chemithermomechanical pulping, deacetylation, demethylation, hemicelluloses, pectins, Picea abies, sulfonation

01/2006 | Holzforschung, Walter de Gruyter
De-esterification and sulfonation in spruce CTMP: Effects on pulp and paper properties

De-esterification and sulfonation reactions, which create new anionic groups in the middle lamella and primary wall layers, are the key chemical reactions in chemithermomechanical pulping...

Keywords: bulk, chemithermomechanical pulping (CTMP), deacetylation, demethylation, fibre size distribution, tear index, tensile index, specific energy demand, sulfonation

07/2006 | Holzforschung, Walter de Gruyter
Dynamics of the effective capillary cross-sectional area during the alkaline impregnation of eucalyptus wood

Wood diffusion is strongly affected by the effective capillary cross-sectional area (ECCSA), which is the area of paths available for diffusion...

Keywords: alkali impregnation, deacetylation, diffusion, effective capillary cross-sectional area, kraft pulping

07/2008 | Holzforschung, Walter de Gruyter