酶水解对马尾松纤维细胞壁结构及微纤丝制备的影响

doi:10.3969/j.issn.0253-2417.2017.03.011

Abstract

Abstract: The microfibrillated cellulose(MFC) was prepared from cellulose hydrolyzed masson pine fibers by high-pressure homogenization. The properties of enzymatic hydrolyzed fibers were characterized by surface area and porosity analyzer, X-ray diffractometer and Fourier transform infrared spectrometer. The effect of enzymatic hydrolysis on the preparation of MFC was investigated based on the analysis of the degree of polymerization (D_P), morphology and diameter distribution of MFC. The results showed that the specific surface area, crystallinity and pore structure of fibers could be changed by enzymatic hydrolysis. As the fiber were homogenized 30 times under 100 MPa, the D_P and diameter distribution of MFC obtained from raw fibers were 354 and 20-50 nm respectively, while the D_P and diameter distribution of MFC obtained from enzymatic fibers which was hydrolyzed by 10 FPU/g cellulase at 50℃ for 2 h were 229 and 10-40 nm respectively.

Key words: enzyme pretreatment, pore distribution, crystallinity, specific surface area, microfibrillated cellulose

CLC Number:

TQ35

ZHU Jinghang, LI Xinping, WANG Zhuan, DU Min, CHEN Lihong. Effects of Enzymatic Hydrolysis on Cell Wall Structure of Masson Pine and Preparation of Microfibrillated Cellulose[J]. Chemistry and Industry of Forest Products, 2017, 37(3): 82-88.

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Effects of Enzymatic Hydrolysis on Cell Wall Structure of Masson Pine and Preparation of Microfibrillated Cellulose

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