摘要
以小黑杨幼龄材和成熟材为研究对象,分析比较其化学组成、纤维形态和制浆性能。结果表明:幼龄材的苯醇抽出物、纤维素、木质素含量高于成熟材,综纤维素含量低于成熟材;幼龄材的纤维平均长度低于成熟材。分别采用硫酸盐法制浆正交试验,分析得出:保温时间、用碱量对幼龄材的纸浆得率和卡伯值的影响非常显著;用碱量和保温时间对成熟材的纸浆卡伯值影响非常显著;在相同蒸煮条件下,幼龄材比成熟材纸浆得率高,卡伯值和聚合度低。
In order to find out the difference between juvenile and mature wood of Populus sirnonii × P. nigra, this paper compared their chemical composition, fiber morphology and the pulping property. The results showed that the contents of phenethyl alcohol extractives, cellulose and lignin in the juvenile wood were higher than those in the mature wood, the holocellulose contents in the juvenile wood were lower than those in the mature wood. The fiber length in the juvenile Wood was lower than that in the mature wood. Adopting orthogonal experiment on kraft pulping, we analysed that it was very significant for the heat preservation time and the dosage of alkali to the pulping yield and kappa number of the juvenile wood, that it was also very significant for the dosage of alkali and the heat preservation time to the kappa number of the mature wood. On the same technical conditions of pulping, the pulp of the juvenile wood is higher in yield and lower in kappa number and degree of polymerization than that of the mature wood.
出处
《林业科学》
EI
CAS
CSCD
北大核心
2008年第2期111-115,共5页
Scientia Silvae Sinicae
基金
安徽省教育厅自然科学基金(2006KJ038C)
国家自然科学基金(30230420)
安徽农业大学创新团队资助
关键词
小黑杨
幼龄材
成熟材
纤维形态
制浆性能
Populus sirnonii × P. nigra
juvenile wood
mature wood
fiber morphology
pulping property
