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Title
Amorphous cellulose - structure and characterization
Authors
Diana Ciolacu Florin Ciolacu And Valentin I. Popa
Received
July 14, 2010
Published
Volume 45 Issue 1-2 January-February
Keywords
rapeseed straw, chemical composition, soda pulping
Abstract
Rapeseed straw was tested as a non-wood raw material for the production of cellulosic pulps. Preliminary soda pulping experiments showed suitable cooking conditions, viz. a liquor-to-raw material ratio of 5:1, an active alkali charge of 17%, a cooking temperature of 160 ºC, and an H-factor of 900 h were sufficient to produce pulp with a low content of rejects. Under these conditions, a total pulp yield of 37.1%, a kappa number of 38.3 and an amount of rejects of 1.1% were achieved. The chemical composition of rapeseed straw was also determined. The bonding and strength properties of pulp fibres exhibiting good beatability were evaluated by a simple rheosedimentation method and by measuring tensile strength.
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