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

doi:10.1016/j.carbpol.2012.07.042

CORC > 北京大学 > 化学与分子工程学院

	Radiation effects on microcrystalline cellulose in 1-butyl-3-methylimidazolium chloride ionic liquid
	Hao, Yan ; Peng, Jing ; Ao, Yinyong ; Li, Jiuqiang ; Zhai, Maolin
刊名	碳水化合物聚合物
	2012
关键词	gamma-Ray irradiation Radiation degradation kinetic Microcrystalline cellulose Ionic liquids N-Methylmorpholine-N-oxide INFRARED-SPECTRA GAMMA-RADIATION REACTION MEDIA POLYSACCHARIDES TEMPERATURE DISSOLUTION WATER
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.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000309331000032&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Chemistry, Applied; Chemistry, Organic; Polymer Science; SCI(E); EI; PubMed; 2; ARTICLE; 4; 1629-1633; 90
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/149848]
专题	化学与分子工程学院
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]. 碳水化合物聚合物,2012.
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.碳水化合物聚合物.
MLA	Hao, Yan,et al."Radiation effects on microcrystalline cellulose in 1-butyl-3-methylimidazolium chloride ionic liquid".碳水化合物聚合物 (2012).