DMD在桉木硫酸盐浆无氯漂白中的作用

Dimethyldioxirane Performance in the TCF Bleaching of Eucalyptus Kraft Pulp

进行了桉木硫酸盐浆分别与二甲基二环氧乙烷（ＤＭＤ）和氧脱木素性能的比较，对氧漂前及过氧化氢漂前经少量二甲基二环氧乙烷预处理的活化作用进行了研究，探讨了采用ＤＭＤ的桉木硫酸盐浆的全无氯漂序ＭＯＱＭＰ的可行性。

The bleaching performance of dimethyldioxraine (DMD) was examined in the MOQMP bleaching sequence of Eucalyptus kraft pulp(M DMD,O oxygen, Q chelating, P peroxide).Adding small amount of DMD proved to be favorable to lignin activating, thus promoting the delignificating rate and the resulted brightness in the early MO stage and the final MP stage. It was claimed that if ME stage were adopted, it would be comparable to molecular oxygen treatment with better delignification selectivity. Eucalyptus kraft pulp bleaching with MOQMD sequence possessed a brightness of 85%.