杨木挤压法漂白化机浆纤维形态电子显微镜分析

Analysing the Bleached Extruder Chemi-Mechanical Pulp of poplar by scan electron microscope

分别对杨木原料PRC-APMP和BECMP浆料进行扫描电子显微镜观察,从纤维分离程度、带状纤维数量、纤维弯曲及扭转状态、细胞壁形态变化等角度对两种浆进行对比分析,并结合成浆物理指标变化做出解释。研究结果认为:与APMP相比,BECMP磨浆强度可以达到甚至超过APMP水平;由于BECMP磨浆过程使纤维形态发生了有别于APMP的变化,内部细纤维化程度更高,纤维细胞壁微细纤维结构连接弱化甚至发生剥离,反映在成浆结合强度上抗张指数高于APMP,尤其随打浆度增高,差别幅度增大。

Compared the poplar pulp of PRC--APMP with the poplar pulp of BECMP by scan electron micro- scope, results showed that the refining pulp intensity of BECMP is better than the intensity of APMP through analysing the separation of fibre,the quantity of strip fibre,the distortion of fibre,the shape of cellular wall and the physical index of the pulp. Because the higher separation degree of inner fibre make cellular wall removed. Moreover,bring about greater change with higher beating degree during the BECMP refining process.