| D,L-乳酸合成丙交酯反应底物水解液的组成分析 |
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| 引用本文： | 李坤,魏顺安.D,L-乳酸合成丙交酯反应底物水解液的组成分析[J].应用化工,2007,36(6):616-618. |
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| 作者姓名： | 李坤 魏顺安 |
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| 作者单位： | 重庆大学,化学化工学院,重庆,400044 |
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| 摘 要： | 丙交酯生成过程中因为副反应必然产生一定比例的高粘度反应底物,该底物水解处理后,可以循环利用,本文采用非水滴定法测定水解酸含量、卡尔.费休法测定残存水含量。结果表明,丙交酯水解液中平均含水量为26.98%,含酸量为69.90%,水解彻底,实验精密度及准确度均达到要求。该法操作简便,结果准确,可以作为该体系的常规分析方法。
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| 关 键 词： | 丙交酯 水解 非水滴定 卡尔.费休法 |
| 文章编号： | 1671-3206（2007）06-0616-03 |
| 修稿时间： | 2007-01-30 |
Analysis of substrate hydrolyzate in process of lactide synthesis by D, L-lactic acid |
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| LI Kun,WEI Shun-an.Analysis of substrate hydrolyzate in process of lactide synthesis by D, L-lactic acid[J].Applied chemical industry,2007,36(6):616-618. |
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| Authors: | LI Kun WEI Shun-an |
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| Affiliation: | Chemistry and Chemical Industry College of Chongqing University, Chongqing 400044, China |
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| Abstract: | There are proportional viscous reaction substrates yielded consequentially,which could be cyclic used after being hydrolyzed.Along with different hydrolytic degrees,the content of hydrolytic acid was determined by non-aqueous titration,the content of water remained was determined by Karl·Fischer titration.The results showed that,the average water content in lactide hydrolyzate is 26.98%,lactic acid content is 69.9%,more over,precision and accuracy of this method meet the requests,and easy to operate,so,it would be a conventional method for the system. |
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| Keywords: | lactide hydrolyze non-aqueous titration Karl · Fischer titration |
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