Characterization of the regenerated cellulose films in ionic liquids and rheological properties of the solutions
文献类型：期刊论文
| 作者 | Liu, Zhen1; Wang, Hui1; Li, Zengxi1; Lu, Xingmei2; Zhang, Xiangping2; Zhang, Suojiang2; Zhou, Kebin1 |
| 刊名 | MATERIALS CHEMISTRY AND PHYSICS
 |
| 出版日期 | 2011-07-15 |
| 卷号 | 128期号:1-2页码:220-227 |
| 关键词 | Biomaterials Surface properties Thin films Polymers |
| ISSN号 | 0254-0584 |
| 通讯作者 | Li, ZX |
| 英文摘要 | Dissolution 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. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Materials Science, Multidisciplinary |
| 研究领域[WOS] | Materials Science |
| 关键词[WOS] | SOLVENT ; SYSTEMS ; POLYMERIZATION ; DERIVATIVES ; DISSOLUTION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000291525400039 |
| 公开日期 | 2013-11-05 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/4865]  |
| 专题 | 过程工程研究所_多相复杂系统国家重点实验室 |
| 作者单位 | 1.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 |
| 推荐引用方式 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.,...&Zhou, Kebin.(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. |
入库方式： OAI收割
来源：过程工程研究所
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