| 微波辅助离子液体法对纤维素的均相改性研究 |
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| 引用本文： | 骆微,;李丽琴,;孙高穹,;林春香,;刘明华. 微波辅助离子液体法对纤维素的均相改性研究[J]. 纤维素科学与技术, 2014, 0(4): 13-17 |
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| 作者姓名： | 骆微, 李丽琴, 孙高穹, 林春香, 刘明华 |
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| 作者单位： | [1]福州大学环境与资源学院,福建福州350116; [2]漳州市消防支队龙文消防大队,福建漳州363000 |
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| 基金项目： | 福建省教育厅科技项目（JK2013004;JA12040）; 福州大学科技发展基金（2012-XY-10;2014-XQ-11） |
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| 摘 要： | 以离子液体1-丁基-3-甲基咪唑氯盐（BMIMCl）为溶剂,采用微波辐射代替常规的加热技术,对纤维素进行均相改性研究。首先进行微波辐射下纤维素在离子液体中的溶解,研究微波辐射温度和溶解时间的影响;其次进行纤维素与氯乙酰氯在微波辅助离子液体中的均相乙酰化研究,利用FT-IR、1H-NMR对聚合物进行了表征,探讨微波辐射功率、反应温度、反应时间和氯乙酰氯用量对纤维素取代度的影响。结果表明,微波加热有利于纤维素溶解和酯化,辐射时间和温度提高均会增加纤维素溶解量,酯化剂用量和微波辐射时间对反应影响较大。
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| 关 键 词： | 纤维素 离子液体 微波加热 均相乙酰化 |
Homogeneous Modification of Cellulose by Microwave Assisted Ionic Liquid |
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| Affiliation: | LUO Wei, LI Li-qin, SUN Gao-qiong, LIN Chun-xiang, LIU Ming-hui ( 1. College of Environment ＆ Resources, Fuzhou Unversity, Fuzhou 350116, China; 2. The Longwen fire brigade, Zhangzhou fire brigade, Zhangzhou 363000, China) |
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| Abstract: | Cellulose was modified homogeneously via microwave instead of the conventional heating assisted by ionic liquid 1-butyl-3-methyl imidazole chloride （BMIMCI）. Cellulose was first dissolved in BMIMC1 under microwave irradiation. The influence of microwave irradiation temperature and microwave irradiation was investigated. The dissolved cellulose was homogeneously modification under microwave irradiation using choroacetyl chloride as acylating agent. The obtained product was characterized by FT-IR and 1H-NMR. The influence of microwave irradiation power, reaction temperature, reaction time and the dosage of chloroacetyl chloride on substitution degree of cellulose was discussed. The results showed that microwave heating was helpful to the dissolution of cellulose and esteriflcation, radiation time and temperature rise would increase the amount of dissolving cellulose, esterifying agent and microwave radiation time had bigger influence on the reaction. |
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| Keywords: | cellulose ionic liquids microwave irradiation homogeneous acetylation |
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