【摘要】 利用两种不同来源的纤维素酶按照不同的滤纸酶活/CMC酶活[Filter Paper Activity/CMCase(F/C)]比值进行混合,酶解二次纤维后,借助电子显微镜、X-射线衍射以及红外光谱等手段,分析酶解对纤维超分子结构的影响。研究结果表明: F/C比值从0增加到2.5,纤维结晶度从65.49%增加到73.40%;F/C增加至3.0,结晶度下降至65.52%。纸张强度随着F/C值增加从21.78 Nm/g下降至16.57 Nm/g。酶解导致纤维细胞致密的次生壁结构疏松多孔,酶解由纤维表面向内层转移,单根纤维强度和成纸强度下降。更多还原

【Abstract】 Two kinds of cellulase were produced from the different origin. They were mixed according to the different rate of filter paper activity to CMCase(F/C). Cellulase could affected the fibers ultrastructure and degraded the fibers. Scanning electron microscope(SEM), X-diffraction and infrared spectra(IR) were the main analysis methods. Results shows crystalline degree of fibers increases from 65.49% to 73.40% and decreases to 65.52% with different F/C. Enzymolysis makes the cell wall loose and porous. Enzyme attacks fibers from the fiber surface to interior. Single fiber and paper strength decrease.更多还原