Investigations about dissolution of cellulose in the 1-allyl-3-alkylimidazolium chloride ionic liquids

被引:45
作者
Liu, De-tao [1 ]
Xia, Kun-feng [1 ]
Cai, Wei-hua [1 ]
Yang, Ren-dang [1 ]
Wang, Li-qin [1 ]
Wang, Bin [1 ]
机构
[1] S China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Guangdong, Peoples R China
基金
中国国家自然科学基金;
关键词
1-Allyl-3-alkylimidazolium chloride ionic liquids; Carbon atom; Cellulose dissolution; Regenerated cellulose;
D O I
10.1016/j.carbpol.2011.08.026
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
In this work, the 1-allyl-3-alkylimidazolium chloride ionic liquids were synthesized and characterized by increasing carbon atoms (n <= 6) of alkyl chains on a cationic 3-imidazole ring. The results indicated that 1-allyl-3-alkylimidazolium chloride with asymmetrical structure on the two sides of a cationic 3-imidazole ring (i.e., n=1, 2, 6) exhibited alkalinity and lower thermal stabilities, and showed better solubility to the cellulose samples at 60-120 degrees C than those with symmetrical structures (n = 3, 4). The cellulose samples treated by 20% (w/w) ethylenediamine solution showed better solubility in 1-allyl-3-ethyl, hexyl-imidazolium chloride ionic liquids than that treated with 20% (w/w) NaOH solution at 5 degrees C for 72 h. XRD and TG analysis indicated that 002 plane apparent crystallite size as well as thermal stability of the regenerated cellulose samples from the ionic liquids decreased significantly compared with the untreated cellulose samples. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1058 / 1064
页数:7
相关论文
共 21 条
[1]   Thermal degradation of ionic liquids at elevated temperatures [J].
Baranyai, KJ ;
Deacon, GB ;
MacFarlane, DR ;
Pringle, JM ;
Scott, JL .
AUSTRALIAN JOURNAL OF CHEMISTRY, 2004, 57 (02) :145-147
[2]   Effects of cellulase on the modification of cellulose [J].
Cao, Y ;
Tan, HM .
CARBOHYDRATE RESEARCH, 2002, 337 (14) :1291-1296
[3]   Room temperature ionic liquids (RTILs): A new and versatile platform for cellulose processing and derivatization [J].
Cao, Yan ;
Wu, Jin ;
Zhang, Jun ;
Li, Huiquan ;
Zhang, Yi ;
He, Jiasong .
CHEMICAL ENGINEERING JOURNAL, 2009, 147 (01) :13-21
[4]   Dissolution of cellulose with NMMO by microwave heating [J].
Dogan, Hacer ;
Hilmioglu, Nilder Durmaz .
CARBOHYDRATE POLYMERS, 2009, 75 (01) :90-94
[5]  
GB, 1986, TEST METH DEGR POL R
[6]  
GB, 1985, GUID DET DENS REL DE
[7]   Thermal decomposition of allyl-imidazolium-based ionic liquid studied by TGA-MS analysis and DFT calculations [J].
Hao, Yan ;
Peng, Jing ;
Hu, Shaowen ;
Li, Jiugiang ;
Zhai, Maolin .
THERMOCHIMICA ACTA, 2010, 501 (1-2) :78-83
[8]  
Klemm D., 1998, Comprehensive Cellulose Chemistry: Fundamentals and analytical Methods, DOI [10.1002/3527601929, DOI 10.1002/3527601929]
[9]   Ionic Liquid-Mediated Selective Extraction of Lignin From Wood Leading to Enhanced Enzymatic Cellulose Hydrolysis [J].
Lee, Sang Hytm ;
Doherty, Thomas V. ;
Linhardt, Robert J. ;
Dordick, Jonathan S. .
BIOTECHNOLOGY AND BIOENGINEERING, 2009, 102 (05) :1368-1376
[10]   Preparation and characteristics of moulded biodegradable cellulose fibers/MPU-20 composites (CFMCs) by steam injection technology [J].
Liu, Detao ;
Li, Jun ;
Yang, Rendang ;
Mo, Lihuan ;
Huang, Lianghui ;
Chen, Qifeng ;
Chen, Kefu .
CARBOHYDRATE POLYMERS, 2008, 74 (02) :290-300