摘要
研究了3种亚硫酸盐浆(杨木AS-AQ、NS-AQ、落叶松AS-AQ)和2种硫酸盐浆(杨木KP、落叶松KP)在不同酸水解条件下水解产物的紫外和红外光谱图。结果表明,在pH值3.0、90℃下的酸水解,各种浆的水解产物都不含己烯糖醛酸,而含有酸溶木素。在110℃下按测定己烯糖醛酸的方法进行酸水解处理,3种亚硫酸盐浆的水解产物含酸溶木素而不含己烯糖醛酸,而2种硫酸盐浆含有己烯糖醛酸,也含有酸溶木素。从而证明了亚硫酸盐浆和硫酸盐浆酸处理导致卡伯值降低的机理差异。
The UV and IR spectrograms of hydrolysates of acid hydrolysis under various conditions for 3 types of sulfite pulp（AS-AQ of poplar, NS-AQ of poplar, AS-AQ of larch） and 2 types of KP （KP of poplar, KP of larch） were studied. The result showed that the hydrolysates of all the pulps don＇t contain hexenuronic acid, but contain acid soluble lignin when acid hydrolysis was carried out under the conditions ofpH 3.0 and 90℃. However, when the hydrolysis process is at 110℃ and in accordance with the procedure for hexenuronic determination, the hydrolysates of 3 types of sulrite pulp contain acid soluble lignin, but don＇ t contain hexenuronic acid. The hydrolysates of 2 types of KP contain hexenuronic acid and acid soluble lignin. The result showed the different mechanism of Kappa number reduction between sulfite pulp and KP when they were treated with acid.
出处
《中国造纸学报》
EI
CAS
CSCD
2006年第1期22-24,共3页
Transactions of China Pulp and Paper
