| 高取代度乙基纤维素的合成研究 |
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| 引用本文： | 谢传龙,付时雨,邢晓纯. 高取代度乙基纤维素的合成研究[J]. 广东化工, 2010, 37(11): 3-4,12 |
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| 作者姓名： | 谢传龙 付时雨 邢晓纯 |
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| 作者单位： | 1. 华南理工大学,制浆造纸工程国家重点实验室,广东,广州,510640
2. 华南农业大学,资源环境学院,广东广州,510642 |
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| 基金项目： | 国家高技术研究发展计划资助项目(2007AA100704) |
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| 摘 要： | 采用溴乙烷作醚化剂,四氢呋喃作稀释剂合成乙基纤维素,研究了反应时间和反应温度对产品得率的影响,结果表明反应可从80℃开始,产品得率随反应温度升高而增大,可达89.7%,7～9h反应即可结束。利用红外光谱、核磁共振和凝胶渗透色谱对产品结构进行了表征。计算得出合成的乙基纤维素取代度在2.5左右,分子质量分布窄,在有机溶剂中具有良好的溶解性能。
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| 关 键 词： | 乙基纤维素 高取代度 合成 溴乙烷 四氢呋喃 |
Study on the Preparation of High Substituted Ethyl Cellulose |
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| Xie Chuanlong,Fu Shiyu,Xing Xiaochun. Study on the Preparation of High Substituted Ethyl Cellulose[J]. Guangdong Chemical Industry, 2010, 37(11): 3-4,12 |
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| Authors: | Xie Chuanlong Fu Shiyu Xing Xiaochun |
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| Affiliation: | Xie Chuanlong1,Fu Shiyu1,Xing Xiaochun2(1.State Kay Laboratory of Pulp and Paper Engineering,South China University of Technology,Guangzhou 510640,2.College of Natural Resources and Environment,South China Agricultural University,China) |
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| Abstract: | High substituted ethyl cellulose was synthesized by using ethyl bromide as etherification agent and THF as inert solvent in the reaction.The reaction was started from 80 ℃,and the conversion of EC increased with the temperature,as high as 89.7%,even higher.The reaction cost about 7-9 h.The structure of ethyl cellulose was characterized and confirmed by FTIR and 1H-NMR.The molar mass distribution,average molar mass and the polydispersity were measured by GPC.The DS of the EC obtained was around 2.5.And the EC had narrow molecular weight distribution which responses to good solubility. |
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| Keywords: | ethyl cellulose high substitution synthesize ethyl bromide tetrahydrofuran |
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