| 第 35 卷第 1 期 |  | Vol. 35 No. 1 | | 2005 年 2 月 | Feb 2005 |
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所屬欄目：其它
一步法合成乙基纖維素的實(shí)驗研究 |
| 李洪青; 鄒華生; 劉會(huì )沖(華南理工大學(xué)化工與能源學(xué)院; 廣東風(fēng)華高新科技集團有限公司; 廣東廣州; 廣東肇慶) |
| 摘 要：采用正交實(shí)驗的方法,以甲苯為稀釋劑,探討了乙基纖維素一步法合成的工藝條件。研究結果表明:一步法合成工藝流程簡(jiǎn)單易行,生產(chǎn)成本較低,產(chǎn)品取代度相對略低,以1mol纖維素為基準,選出優(yōu)惠工藝條件為:甲苯用量13mol,固體氫氧化鈉用量30mol,氯乙烷用量35 mol,反應溫度140℃,反應時(shí)間12 h,產(chǎn)品乙氧基含量可達44.2%。 |
| 關(guān)鍵詞：乙基纖維素; 纖維素; 一步法; 正交實(shí)驗 |
| 中圖分類(lèi)號：TQ352.72 文獻標識碼：A 文章編號：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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