Physical characterization of enzymatically modified Kraft pulp fibers
Physical characterization of enzymatically modified Kraft pulp fibers
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DOI：
10.1016/s0168-1656(97)00100-4
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发表时间：
1997-09
影响因子：
4.1
通讯作者：
S. Mansfield;E. Jong;R. S. Stephens;J. Saddler
中科院分区：
文献类型：
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作者：
S. Mansfield;E. Jong;R. S. Stephens;J. Saddler
用同时具有纤维素酶和木聚糖酶活性的酶制剂处理花旗松硫酸盐浆。处理导致21.1%的木聚糖和1.8%的纤维素的增溶。纤维和纸张性能的变化进行了观察。监测孔体积，聚合度，结晶度，FT-IR光谱和扫描电子显微镜有助于阐明纤维组成和形态的变化。数据表明，由于纤维表面的侵蚀，内在纤维强度下降。纸强度的降低是由于内在纤维强度降低和纤维中大部分半纤维素组分聚合度降低以及纤维原纤化和细粉水解的共同作用。
Douglas-fir kraft pulps were treated with an enzyme preparation containing both cellulase and xylanase activities. Treatments resulted in the solubilization of 21.1% the xylan and 1.8% of the cellulose. Changes in fiber and paper properties were observed. Monitoring pore volume, degree of polymerization, crystallinity, FT-IR spectra, and scanning electron microscopy helped elucidate changes in fiber composition and morphology. Data indicate a decline in intrinsic fiber strength due to an erosion of the fiber surface. Reduction in paper strength resulted from the collective effects of decreased intrinsic fiber strength and the reduction in the degree of polymerization of a large portion of the hemicellulose component of the fibers, as well as fiber defibrillation and fines hydrolysis.