| 离子液体中羟丙基纤维素的合成 |
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| 引用本文： | 孔兴杰,贾彩,李坤兰,吕兴梅,张锁江. 离子液体中羟丙基纤维素的合成[J]. 化工学报, 2013, 64(Z1): 73-79. DOI: 10.3969/j.issn.0438-1157.2013.z1.011 |
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| 作者姓名： | 孔兴杰 贾彩 李坤兰 吕兴梅 张锁江 |
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| 作者单位： | 1. 大连工业大学化学与轻工学院, 辽宁 大连 116034;2. 中国科学院过程工程研究所, 北京 100190 |
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| 基金项目： | 国家自然科学基金项目(21210006, 21106011)；国家高技术研究发展计划项目(2012AA03001)；北京市重点基金项目(2131005)；辽宁省教育厅科学研究一般项目(L2012195)。 |
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| 摘 要： | 使用离子液体1,3-二乙基咪唑磷酸二乙酯盐([EEIM][DEP])为反应溶剂主组分来溶解微晶纤维素进行羟丙基化衍生，微晶纤维素和醚化剂在离子液体中均可形成均相，通过碱化、醚化、酸化及洗涤等步骤制备得到不同取代度的羟丙基纤维素。考察了碱化反应温度、反应原料摩尔比、醚化反应时间及酸化剂的种类对羟丙基纤维素产品的收率和摩尔取代度的影响，并采用红外、核磁、TGA等手段对产品结构进行了表征。
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| 关 键 词： | 微晶纤维素 羟丙基纤维素 离子液体 溶解 均相 |
| 收稿时间： | 2013-11-04 |
| 修稿时间： | 2013-11-11 |
Synthesis study on hydroxypropyl cellulose in ionic liquids |
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| KONG Xingjie,JIA Cai,LI Kunlan,LV Xingmei,ZHANG Suojiang. Synthesis study on hydroxypropyl cellulose in ionic liquids[J]. Journal of Chemical Industry and Engineering(China), 2013, 64(Z1): 73-79. DOI: 10.3969/j.issn.0438-1157.2013.z1.011 |
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| Authors: | KONG Xingjie JIA Cai LI Kunlan LV Xingmei ZHANG Suojiang |
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| Affiliation: | 1. School of Light Industry & Chemical Engineering, Dalian Polytechnic University, Dalian 116034, Liaoning, China;2. Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China |
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| Abstract: | In this work, the ionic liquid N-ethyl-N-ethyl-imidazole diethyl phosphate was used as the main solvent to fully dissolve microcrystalline cellulose (MCC) to achieve hydroxypropylization of MCC. Both MCC and the etherifying agent could be homogeneously disolved in the ionic liquid, and hydroxypropyl cellulose(HPC) was prepared through the alkali treatment, etherification and acidification steps to afford the products of different substitution degree. By adjusting the alkalization temperature, molar ratio of reagents, etherification reaction time and the types of acidifiers, the investigation on the yield and the molar substitution degree of HPC was carried out. The structure of products were characterized by 1H NMR, FTIR and TGA etc. |
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| Keywords: | microcrystalline cellulose hydroxypropyl cellulose ionic liquids dissolution homogeneous |
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