The utilization of Jerusalem Artichoke stalk resources in paper industry
XUE Chong-yun, HE Wen-ming, ZHANG Rui-ling (China Academy of Pulping and Papermaking, Beijing 100020, China)
The fiber morphology, chemical composition and the feasibility of pulping and papermaking of Jerusalem Artichoke stalk were studied. The findings show that the average fibre length of Jerusalem Artichoke stalk is 0.72mm, the maximum 2.21mm, and the minimum 0. 22mm. The pentosan content of 16.08% and the holocellulose content of 62.39%, are both apparently 5%-11 % lower than the woody part of plantation Common Paper Mulberry. The pulping yield was 31 % for the pulp made with NaOH-AQ process, the KMnO4 value of pulp after being bleached with 10% active chlorine was 15.5 and the brightness of the pulp reached 70.21%ISO. For the pulp made with CMP process, the yield is 88.7%, after 20% of pulp from imported #11 waste linerboard being mixed for papermaking, the breaking length of the finished paper was 7.65/4.03 km (MD/CD) and the ring crush was 237.0/187.0N.