Radiation effects on microcrystalline cellulose in 1-butyl-3-methylimidazolium chloride ionic liquid

doi:10.1016/j.carbpol.2012.07.042

CORC > 化学研究所 > 中国科学院化学研究所

	Radiation effects on microcrystalline cellulose in 1-butyl-3-methylimidazolium chloride ionic liquid
	Hao, Yan 1,2; Peng, Jing 1; Ao, Yinyong 1; Li, Jiuqiang 1; Zhai, Maolin 1
刊名	CARBOHYDRATE POLYMERS
	2012-11-06
卷号	90 期号:4 页码:1629-1633
关键词	Gamma-ray Irradiation Radiation Degradation Kinetic Microcrystalline Cellulose Ionic Liquids N-methylmorpholine-n-oxide
ISSN号	0144-8617
DOI	10.1016/j.carbpol.2012.07.042
英文摘要	The radiation processing of cellulose in ionic liquids (ILs) demands a comprehensive knowledge of radiation effects on cellulose in ILs. Herein, gamma radiation-induced degradation kinetics of microcrystalline cellulose (MCC) in 1-butyl-3-methylimidazolium chloride ([Bmim]Cl) was studied by viscometry. The intrinsic viscosity of MCC in [Bmim]Cl decreased slightly with increasing dose: while chemical structure and crystalline state of cellulose has no obvious change up to 300 kGy. The radiation degradation rate constant (k) of MCC in [Bmim]Cl was 2.60 x 10(-7)/kGy, lower than that of solid cellulose, but higher than that in N-methylmorpholine-N-oxide (NMMO) solvent. Furthermore, k value decreased to 1.12 x 10(-7)/kGy in dimethyl sulfoxide (DMSO)/[Bmim]Cl system due to the free radicals scavenging of DMSO. The radicals generated during irradiation play main role in the radiation degradation of MCC in [Bmim]Cl. This work provides a new way to control the average molecular weight of cellulose by radiation-induced degradation of cellulose in ILs. (c) 2012 Elsevier Ltd. All rights reserved.
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000309331000032
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/49855]
专题	中国科学院化学研究所
通讯作者	Peng, Jing
作者单位	1.Peking Univ, Coll Chem & Mol Engn, Dept Appl Chem, Key Lab Polymer Chem & Phys,Minist Educ,BNLMS, Beijing 100871, Peoples R China 2.Inner Mongolia Univ Sci & Technol, Sch Chem & Chem Engn, Baotou 014010, Inner Mongolia, Peoples R China
推荐引用方式 GB/T 7714	Hao, Yan,Peng, Jing,Ao, Yinyong,et al. Radiation effects on microcrystalline cellulose in 1-butyl-3-methylimidazolium chloride ionic liquid[J]. CARBOHYDRATE POLYMERS,2012,90(4):1629-1633.
APA	Hao, Yan,Peng, Jing,Ao, Yinyong,Li, Jiuqiang,&Zhai, Maolin.(2012).Radiation effects on microcrystalline cellulose in 1-butyl-3-methylimidazolium chloride ionic liquid.CARBOHYDRATE POLYMERS,90(4),1629-1633.
MLA	Hao, Yan,et al."Radiation effects on microcrystalline cellulose in 1-butyl-3-methylimidazolium chloride ionic liquid".CARBOHYDRATE POLYMERS 90.4(2012):1629-1633.