| 第 35 卷第 1 期 |  | Vol. 35 No. 1 | | 2005 年 2 月 | Feb 2005 |
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所属栏目：其它
一步法合成乙基纤维素的实验研究 |
| 李洪青; 邹华生; 刘会冲(华南理工大学化工与能源学院; 广东风华高新科技集团有限公司; 广东广州; 广东肇庆) |
| 摘 要：采用正交实验的方法,以甲苯为稀释剂,探讨了乙基纤维素一步法合成的工艺条件。研究结果表明:一步法合成工艺流程简单易行,生产成本较低,产品取代度相对略低,以1mol纤维素为基准,选出优惠工艺条件为:甲苯用量13mol,固体氢氧化钠用量30mol,氯乙烷用量35 mol,反应温度140℃,反应时间12 h,产品乙氧基含量可达44.2%。 |
| 关键词：乙基纤维素; 纤维素; 一步法; 正交实验 |
| 中图分类号：TQ352.72 文献标识码：A 文章编号：1009-9212(2005)01-0035-03 |
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| Synthesis of Ethyl Cellulose by One-step |
| LI Hong-qing~（1）; ZOU Hua-sheng~1; LIU Hui-chong~2 （1.School of Chemical and Energy Engineering; South China University of Technology; Guangzhou 510640; China; 2.Guangdong Fenghua Advanced Technology Group; Zhaoqing 526020; China） |
| Abstract：The synthesis of ethyl cellulose was studied by one-step method, with toluene as diluent and orthogonal test was adopted. The results showed that the process of one-step synthesis method was easier, the production cost was lower, and the substitution degree was slightly lower than that by two-step method on the basis of 1 molar cellulose. The optimal process parameters to synthesize ethyl cellulose were determined as follows: the dosage of toluene was 13 molar, the dosage of solid sodium hydroxide was 30 mo... |
| Key words：ethyl cellulose; cellulose; process one-step synthesis method; orthogonal test |
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收稿日期：2004-08-28
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