五种相思树制浆适应性能研究

A study on pulping performances of five Acacia species

对七年生的厚荚、马占、杂交、卷荚和黑木相思5种相思树种进行了纤维形态测定和化学成分分析及制浆性能的研究。结果表明,七年生卷荚相思的木素含量最低,综纤维素含量最高,其含量分别为18.73%和82.95%;且七年生卷荚相思平均卡伯值和K/Y值都最小,分别为12.84和0.2305,平均得率最高,达到55.69%。实验表明,七年生卷荚相思是优良的造纸用速生阔叶材。

The fiber morphology, chemical composition and pulping properties of five Acacia species woods （7-year-old Acacia crassicarpa, Acacia mangium, Acacia mangiumxA. auriculiformis, Acacia cincinnata, Acacia melanoxylon） were investigated. The results show that the 7-year-old Acacia cincinnata possesses the lowest lignin content and the highest cellulose content, being 18.73% and 82.95% respectively; furthermore, its average kappa number and K/Y ratio are the lowest, being 12.84 and 0.2305, and the pulping yield is the highest, reaching 55.69%. The results indicate that the 7-year-old Acacia cincinnata is an excellent kind of fast-growing hard wood for papermaking.