Fractionation and cellulase treatment for enhancing the properties of kraft-based dissolving pulp

被引：32
|
作者：
Duan, Chao [1 ,2 ]
Wang, Xinqi [1 ]
Zhang, YanLing [1 ]
Xu, Yongjian [1 ]
Ni, Yonghao [1 ,2 ]
机构：
[1] Shaanxi Univ Sci & Technol, Coll Bioresources Chem & Mat Engn, Xian 710021, Peoples R China
[2] Univ New Brunswick, Limerick Pulp & Paper Ctr, Fredericton, NB E3B 5A3, Canada
来源：
BIORESOURCE TECHNOLOGY | 2017年 / 224卷
关键词：
Dissolving pulp; Kraft-based process; Fractionation; Cellulase treatment; Molecular weight distribution; Fock reactivity; VISCOSE RAYON PRODUCTION; ENZYMATIC-HYDROLYSIS; PARTICLE-SIZE; REACTIVITY; ACCESSIBILITY; ENDOGLUCANASE; FIBERS; RATES;
D O I：
10.1016/j.biortech.2016.10.077
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
The aim of this study was to investigate a combined process involving pulp fractionation and cellulase treatment of each fraction for improving the molecular weight distribution (MWD) and reactivity of a kraft-based dissolving pulp. Three pulp fractions, namely long-fiber, mid-fiber and short-fiber fractions (LF, MF and SF, respectively), were used as the substrates. The results showed that the SF had the highest accessibility, lowest viscosity, and highest cellulase adsorption capacity, while the opposite was true for the LF. At a given viscosity, the combined process led to a lower polydispersity index (3.71 vs 4.98) and a higher Fock reactivity (85.6% vs 76.3%), in comparison to the conventional single-stage cellulase treatment. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：439 / 444
页数：6
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