Effect of Xylanase Treatment on Papermaking Properties of Poplar High Yield Pulp

摘要

Xylanase is effective and specificity to xylose catalytic degradation, and has strong adaptability. In this paper, effect of xylanase treatment on the drainge and physical properties of high yield pulp was studied. The results showed that, compared with the untreated high yield pulp. The brightness of the treated pulp increased 1.84% ISO, light scattering coefficient alse increased, opacity coefficient decreased. Tearing index, breaking length and bursting index respectively increased by 15.7%,9.07% and 14.85%. With the rapid development of papermaking industry, enzyme treatment in pulp and papermaking is more and more widely. Biological pretreatmeng in pulp can not only reduce energy consumption, and because its can improve pulp drainability, but also improve the speed of paper machine and production capacity, and reduce the concentration of pulping in the headbox, improve paper evenness, and keep the mechanical good, then improve the quality of paper. But different enzymes on different pulp processing effects are not the same, while the factors of the amount of enzyme used, the treatment temperature, pulp consistency, processing time and PH on the enzyme also a great effect. In this experiment, the xylanase are used to treat the Poplar High Yield Pulp to investigate result with different enzyme dosage, the treatment temperature, pulp consistency, the processing time and PH.