【摘要】 本研究对产自云南省西双版纳1. 5年生的山黄麻(Trema orientalis)进行制浆造纸基础评价。结果表明,山黄麻的木质部纤维平均长度接近1. 2 mm,综纤维素和酸不溶木素的含量分别为78%和21%。采用硫酸盐法制浆,在最高蒸煮温度160℃、NaOH用量21%、升温时间90 min、保温时间90 min的条件下,细浆得率为52. 7%,再经氧脱木素-二氧化氯-过氧化氢加氧气强化的碱抽提(ODEop)短程漂白后,其纸浆得率99. 6%,白度85. 0%,漂白浆的抗张指数为79. 0 N·m/g、耐破指数为5. 15 kPa·m~2/g、撕裂指数为5. 81 mN·m~2/g。更多还原

【Abstract】 For the evaluation of 1. 5-year-old trema orientalis from Xishuangbanna,Yunnan Province,the fiber morphology and chemical composition of its xylem were examined,the average fiber length was close to 1. 2 mm,total cellulose content was 78%,and the content of Klason lignin was 21%. Sulfate cooking of trema orientalis was conducted under the conditions of NaOH charge 21%,cooking maximum temperature 160℃,cooking time 180 min(including time to maximum temperature 90 min,time at maximum temperature 90 min),the screened yield was 52. 7%. Resultant pulp was then bleached via ODEop bleaching sequence,the yield of bleached pulp was 99. 6% and brightness 85. 0%. The tensile index,burst index and tear index of bleached pulp was 79. 0 N·m/g,5. 15 kPa·m~2/g and 5. 81 mN·m~2/g respectirely.更多还原