| 纤维素原料/离子液体溶液体系流变性能的研究 |
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| 引用本文： | 刘丽英,陈洪章. 纤维素原料/离子液体溶液体系流变性能的研究[J]. 纤维素科学与技术, 2006, 14(2): 8-12 |
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| 作者姓名： | 刘丽英 陈洪章 |
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| 作者单位： | 中国科学院过程工程研究所,生化工程国家重点实验室,北京,100080 |
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| 基金项目： | 国家重点基础研究发展计划(973)项目(2004CB719700)，国家高技术研究发展计划(863)项目(2001AA514023)，中国科学院知识创新项目(KJCXZ-SW-206-2)资助课题 |
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| 摘 要： | 利用NDJ-1型旋转粘度计分别对木浆/离子液体氯化1-丁基-3-甲基咪唑([BMIM]Cl)溶液体系和水洗汽爆麦草/[BMIM]Cl溶液体系的流变性能进行了研究。考察了转子转速、温度、纤维素浓度及添加剂等对溶液粘度的影响。结果表明,两种溶液体系的流动活化能均较低,分别为42 kJ/mol和47 kJ/mol,其表观粘度随温度升高而降低;纤维素浓度和浆粕聚合度的增加都可使溶液的粘度增加。进一步研究了不同添加剂对粘度的影响,发现二甲基亚砜(DMSO)、N,N-二甲基乙酰胺(DMAC)和1,4-二氧六环的加入都能降低溶液的粘度,但以DMSO的效果最佳。
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| 关 键 词： | 纤维素原料 1-丁基-3-甲基咪唑氯([BMIM]Cl) 粘度 流变性能 |
| 文章编号： | 1004-8405(2006)02-0008-05 |
| 修稿时间： | 2005-07-30 |
Study on the Rheological Behavior of Cellulose Materials/Ionic Liquid Solutions |
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| LIU Li-ying,CHEN Hong-zhang. Study on the Rheological Behavior of Cellulose Materials/Ionic Liquid Solutions[J]. Journal of Cellulose Science and Technology, 2006, 14(2): 8-12 |
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| Authors: | LIU Li-ying CHEN Hong-zhang |
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| Abstract: | The rheological properties of wood pulp/ionic liquid 1-butyl-3-methylimidazolium chloride([BMIM]Cl) solutions and water washed steam exploded wheat straw/[BMIM]Cl solutions were investigated by NDJ-1 viscometer.The dependence of the shear viscosity on rotor speed,temperature,cellulose materials content and additives were studied.The results showed that the two solutions both had lower flow-activation energy 42 kJ/mol and 47 kJ/mol,respectively.Both solutions exhibited decrease in viscosity with increasing temperature and increase in viscosity with increasing concentration and DP of cellulose materials.The addition of DMSO(dimethyl sulfoxide),DMAC(N,N-dimethylacetamide) and 1,4-dioxane could decrease the viscosity and the DMSO was the best. |
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| Keywords: | lignocelluloses materials 1-butyl-3-methylimidazolium chloride([BMIM]Cl) viscosity rheological behavior |
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