6年生桉树木材化学组成差异及其用于硫酸盐法制浆造纸可行性评价

6 years of eucalyetus wood chemical compossition differences and used for sulfate pulp papemaking feasibility evaluation of lcgal system

对12种6年生桉树的化学成分、纤维形态,制浆造纸性能进行分析,评价它们的硫酸盐法制浆适宜性。12种桉树在抽出物(6.1%~18.9%),木质素(21.6%~30.8%)和综纤维素(55.4%~70.1%)含量方面存在显着差异,化学成分方面的巨大差异导致了桉树不同的制浆得率(38.9%~49.8%)和脱木素程度(卡伯值11.6~24.2)。将这些结果与纤维形态、手抄纸性能综合考虑,蓝桉、卵叶桉、巨尾桉、柳桉、葡萄桉的硫酸盐法制浆适宜性最好。

Six-year-old eucalypt trees from 12 species were analyzed for chemical composition, fiber morphological, pulping and handsheet paper properties to determine their kraft pulping suitability. The 12 species showed substantial differences regarding extractives(6.1-18.9%), lignin(21.6-30.8%) and holocellulose content(55.4-70.1%). The high inter-species variation in chemical composition produced pulps with different yields(38.9-49.8%) and degree of delignification(kappa number 11.6-24.2). The combination of these results with the morphological and handsheet properties suggests that E. globulus, E. ovata, E. grandis, E. saligna and E. botryoides have the best overall characteristics for kraft pulping.