ENHANCED ENZYMATIC HYDROLYSIS AND CHANGES IN STRUCTURE OF CELLULOSE REGENERATED WITH IONIC LIQUIDS

被引：0

作者：

Li, Qiujin ^{[1
,2
,5
]}

Qi, Wei ^{[2
,3
,4
]}

Su, Rongxin ^{[2
,3
,4
]}

He, Zhimin ^{[2
,4
]}

机构：

[1] Tianjin Polytech Univ, Sch Text, Tianjin 300387, Peoples R China

[2] Tianjin Univ, Sch Chem Engn & Technol, State Key Lab Chem Engn, Tianjin 300072, Peoples R China

[3] Tianjin Key Lab Membrane Sci & Desalinat Technol, Tianjin 300072, Peoples R China

[4] Coinnovat Ctr Chem & Chem Engn Tianjin, Tianjin, Peoples R China

[5] Tianjin Polytech Univ, Minist Educ, Key Lab Adv Text Composites, Tianjin 300387, Peoples R China

来源：

CELLULOSE CHEMISTRY AND TECHNOLOGY | 2017年 / 51卷 / 7-8期

关键词：

cellulose; ionic liquid; enzymatic hydrolysis; sugar conversion; molecular weight; molecular weight distribution; CRYSTAL-STRUCTURE; HIGH-RESOLUTION; PRETREATMENT; DISSOLUTION; BIOMASS; TRANSITION; SYSTEM; FIBER;

D O I：

暂无

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

Two kinds of ionic liquids (ILs), 1-butyl-3-methylimidazolium chloride ([BMIM]Cl) and 1-allyl-3-methylimidazolium chloride ([AMIM]Cl), were synthesized to pretreat Whatman filter paper (WFP) for accelerating the enzymatic hydrolysis of cellulose. The hydrolysis rate of IL-pretreated cellulose was significantly enhanced, with a sugar conversion of nearly 100% (24 h). FTIR, XRD, SEM and molecular weight distribution (MWD) analyses verified that the hydrogen bonds and crystalline pattern of cellulose were destroyed after regeneration from ILs. The orderly and compact fibrillar morphologies of cellulose disappeared after IL-pretreatment, and, instead, a fault structure and small holes on the surface could be observed. The changes in the structure of cellulose played an essential role in the enhancement of enzymatic hydrolysis.

引用

页码：593 / 600

页数：8

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