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1989
Journal Article
Titel
Halbzellstoffe nach dem NSSC-Verfahren aus Pappelholz
Titel Supplements
WKI-Mitteilung 497/1989.
Abstract
Semi-chemical pulps from poplar wood of different clones, sites and ages were prepared according to the NSSC-method. The results reveal: Poplar semi-chemical pulps show higher strength properties than industrial as well as laboratory made NSSC-pulps from beech wood. However, the pulping conditions have to be optimized for every clone. Under used pulping conditions semi-chemical pulps from the clone "Scott Pauley" were of lower strength properties compared to those of other clones. The results show clearly that for the build-up of the strength properties the site is by far more important than the age of the trees used for pulping. Semi-chemical pulps obtained from different height levels show wide differences in their mechanical properties. Bark content up to 15 % has no significant influence on the mechanical properties of NSSC-pulps from poplar wood but on their yield.