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Characterization of the regenerated cellulose films in ionic liquids and rheological properties of the solutions
Liu, Zhen1; Wang, Hui1; Li, Zengxi1; Lu, Xingmei2; Zhang, Xiangping2; Zhang, Suojiang2; Zhou, Kebin1; Li, ZX
2011-07-15
Source PublicationMATERIALS CHEMISTRY AND PHYSICS
ISSN0254-0584
Volume128Issue:1-2Pages:220-227
AbstractDissolution and regeneration of cotton pulp using ionic liquids as solvent was investigated. The physicochemical properties of the regenerated cellulose films have been characterized by scanning electron microscopy. X-ray diffractometer, infrared spectrometric analyzer, differential scanning calorimeter, and thermogravimetric analysis instrument. The rheological properties of cotton pulp dissolved in ionic liquids have been investigated by steady shear and oscillatory shear measurements. The influences of experimental parameters, such as the reaction temperature, additives on the solubility and degree of polymerization (DP) of regenerated cellulose were also studied. The results show that 1-butyl-3-methylimidazolium chloride ([bmim]Cl) was a good solvent to dissolve cotton pulp and the solubility can reach 13 wt% at 90 degrees C, but the DP remarkably decreased from 510 to 180 within 7h. It was found that additive N-methylimidazole can effectively minimize DP loss of the regenerated cellulose, which can attribute to the fact that in the mixture of [bmim]Cl and NMI solution, the beta-1,4-glycosidic bond of the cellulose chains cannot be broken because of the relative low concentration of Cl(-). In the steady shear measurement, all the solutions show a shear thinning behavior at high shear rates. In addition, a mechanism of the dissolution of cellulose in [bmim]Cl was proposed. (C) 2011 Elsevier B.V. All rights reserved.
KeywordBiomaterials Surface Properties Thin Films Polymers
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.matchemphys.2011.02.062
Indexed BySCI
Language英语
WOS KeywordSOLVENT ; SYSTEMS ; POLYMERIZATION ; DERIVATIVES ; DISSOLUTION
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000291525400039
Citation statistics
Cited Times:97[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/4865
Collection多相复杂系统国家重点实验室
Corresponding AuthorLi, ZX
Affiliation1.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Liu, Zhen,Wang, Hui,Li, Zengxi,et al. Characterization of the regenerated cellulose films in ionic liquids and rheological properties of the solutions[J]. MATERIALS CHEMISTRY AND PHYSICS,2011,128(1-2):220-227.
APA Liu, Zhen.,Wang, Hui.,Li, Zengxi.,Lu, Xingmei.,Zhang, Xiangping.,...&Li, ZX.(2011).Characterization of the regenerated cellulose films in ionic liquids and rheological properties of the solutions.MATERIALS CHEMISTRY AND PHYSICS,128(1-2),220-227.
MLA Liu, Zhen,et al."Characterization of the regenerated cellulose films in ionic liquids and rheological properties of the solutions".MATERIALS CHEMISTRY AND PHYSICS 128.1-2(2011):220-227.
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