探讨过氧乙酸(Pa)预处理与表面活性剂(AO)处理相结合对硬杂木浆氧脱木素的作用。结果表明,当过氧乙酸用量0.5%,pH值6,处理时间30min,表面活性剂用量0.2%时,纸浆脱木素率可提高13%,脱木素选择性也得到明显改善。强化氧脱木素处理的浆料,经QP漂后白度可以达到83.6%ISO,而常规氧脱木素的浆料白度只有73.5%ISO。 To investigate the effect of peroxyacetic acid (Pa) pretreatment combined with surfactant (AO) on hardwood pulp oxygen delignification. The results showed that when the amount of peroxyacetic acid was 0.5%, the pH value was 6, the treating time was 30min and the amount of surfactant was 0.2%, the delignification rate of pulp could be increased by 13% and the delignification selectivity was obviously improved. The enhanced oxygen delignified pulp achieved a whiteness of 83.6% ISO after QP bleaching compared to 73.5% ISO for conventional oxygen delignified pulp.