Department of Chemistry and Chemical Technologies, Faculty of wood Science and Technology, Technical University in Zvolen.T.G. Masaryka 24, 960 53 Zvolen, Slovak Republic.
Bioresour Technol. 2011 Jan;102(2):1921-7. doi: 10.1016/j.biortech.2010.08.023. Epub 2010 Aug 11.
A comparable series of specimens from spruce wood were pre-treated with sodium hydroxide, sodium hydroxide and hydrogen peroxide, or per-acetic acid sequences. The pre-treatments reduced the yield of pulps and their Kappa number noticeably, diminished the degree of polymerization moderately, and increased their brightness. One-step peroxide bleaching of pulps from the pre-treated spruce wood resulted in their higher brightness compared to bleached pulp from sound wood. From the viewpoint of improved properties of pulp, the most efficient were the sodium hydroxide/per-acetic acid and per-acetic acid/sodium hydroxide sequences. The pre-treatments did not influence mechanical strength of the obtained pulps significantly.
将云杉木材的一系列可比样本进行预处理，分别使用氢氧化钠、氢氧化钠和过氧化氢、过乙酸序列。预处理明显降低了纸浆的得率和卡伯值，适度降低了聚合度，并提高了纸浆的白度。与来自健康木材的漂白浆相比，预处理云杉木材的纸浆进行一步过氧化物漂白会导致更高的白度。从改善纸浆性能的角度来看，氢氧化钠/过乙酸和过乙酸/氢氧化钠序列的效果最为显著。预处理对所得到的纸浆的机械强度没有显著影响。
