| 甲醇介质中制备阳离子淀粉醚 |
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| 引用本文： | 杨建洲,董旭飞,李时民,夏义波.甲醇介质中制备阳离子淀粉醚[J].精细化工,2001,18(6):345-347. |
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| 作者姓名： | 杨建洲 董旭飞 李时民 夏义波 |
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| 作者单位： | 西北轻工业学院化工系, |
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| 摘 要： | 以精制淀粉 (Ⅰ )与 3 氯 2 羟丙基三甲基氯化铵 (Ⅱ )为原料 ,甲醇为溶剂 ,在碱性条件下合成季铵型阳离子淀粉醚。采用凯氏滴定法分析产品中氮的质量分数 ,得出制备季铵型阳离子淀粉醚的最佳反应条件 :m(Ⅰ )∶m(CH3 OH) =1∶1,m(Ⅰ )∶m(Ⅱ ) =10 0∶6 96 ,n(Ⅱ )∶n(NaOH) =1 0∶1 5 ,反应温度 80℃ ,反应时间 8h。在此条件下制备的季铵型阳离子淀粉醚中氮的质量分数为 0 32 4% ,取代度为 0 0 388,反应效率为 6 4.8% ,甲醇回收率为 75 %
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| 关 键 词： | 改性淀粉 季铵型阳离子淀粉醚 3氯2羟丙基三甲基氯化铵 |
| 文章编号： | 1003-5214(2001)06-0345-03 |
| 修稿时间： | 2000年10月8日 |
Preparation of Cationic Starch Ether in Mathanol Solvent |
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| YANG Jian-zhou,DONG Xu-fei,LI Shi-min,XIA Yi-bo.Preparation of Cationic Starch Ether in Mathanol Solvent[J].Fine Chemicals,2001,18(6):345-347. |
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| Authors: | YANG Jian-zhou DONG Xu-fei LI Shi-min XIA Yi-bo |
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| Abstract: | The cationic starch ether was prepared by the reaction of starch (Ⅰ) and 3-chloro-2-hydroxypropyltrimethylammonium chloride (Ⅱ) in the solvent of methanol under alkaline condition.The optimum conditions were:m(Ⅰ)∶m(CH\-3OH)=1∶1,m(Ⅰ)∶（Ⅱ）=100∶6.96,n(Ⅱ)∶n(NaOH)=1.0∶1.5,reaction temperature 80 ℃ and reaction time 8 h.Degree of substitution of the products was 0.0388 and reaction efficiency was 64.8%.Recovery of methanol was 75%. |
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| Keywords: | modified starch cationic starch ether 3 chloro 2 hydroxypropyltrimethylammonium chloride |
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