Abstract
Cationized birch xylan was prepared and its use as a papermaking
chemical was evaluated. The focus was on studying the effects of
cationized birch xylan on the wet and dry strength of fine paper. The
results of the laboratory experiments show that the addition of 3
percent of cationized birch xylan to birch kraft pulp improved the
initial wet strength of the web by 30 percent compared to base stock at a
solids content of 55%. Furthermore, the tensile stiffness of the wet
web increased by approximately a third and the dry tensile strength
improved by 26%, while the dry elastic modulus was not changed. The
improvements in the strength properties were clear when compared to the
base stock, but not as high as achieved with conventionally used
cationized starch. The difference between the xylan and starch is most
likely due to the shorter polymer chain length of the cationized xylan.
Original language | English |
---|---|
Pages (from-to) | 1713-1728 |
Journal | BioResources |
Volume | 7 |
Issue number | 2 |
Publication status | Published - 2012 |
MoE publication type | A1 Journal article-refereed |
Keywords
- cationized birch xylan
- initial wet strength
- strength
- tensile stiffness
- runnability
- fine paper