| 蔗糖脂肪酸酯的合成与性能研究 |
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| 引用本文： | 陈雪,许虎君,沈丹丹,李姝.蔗糖脂肪酸酯的合成与性能研究[J].化学试剂,2009,31(8). |
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| 作者姓名： | 陈雪 许虎君 沈丹丹 李姝 |
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| 作者单位： | 江南大学,化学与材料工程学院,江苏,无锡,214122 |
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| 摘 要： | 在酸催化作用下乙醇与硬脂酸反应合成了硬脂酸乙酯.以硬脂酸乙酯和蔗糖为原料,采用DMF溶剂法,在碱性条件下通过酯交换反应合成了硬脂酸蔗糖酯.采用正交实验设计对反应条件进行优化,在最佳工艺条件下产率可高达95.8%.测定了产品的表面化学性能.结果显示,产品的临界胶束浓度(cmc)为2.228×10-4 mol/L,此时的表面张力为39.88 mN/m,其钙皂分散、乳化、增溶等表面化学性能优良.
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| 关 键 词： | 非离子表面活性剂 蔗糖脂肪酸酯 合成 表面化学性能 |
Study on synthesis and performance of sucrose fatty acid ester |
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| CHEN Xue,XU Hu-jun,SHEN Dan-dan,LI Shu.Study on synthesis and performance of sucrose fatty acid ester[J].Chemical Reagents,2009,31(8). |
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| Authors: | CHEN Xue XU Hu-jun SHEN Dan-dan LI Shu |
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| Affiliation: | School of Chemical and Material Engineering;Jiangnan University;Wuxi 214122;China |
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| Abstract: | In the presence of an acid catalyst,ethyl stearate has been synthesized by reacting stearic acid upon ethanol.Sucrose ester was prepared by transesterification of ethyl stearate with sucrose in the presence of an alkali catalyst and DMF solvent.The yield of esterification product could reach up to 95.8% after optimization of reaction conditions.The surface chemical properties of the products were determined.The results showed that the critical micelle concentration(cmc)and the corresponding surface tension ... |
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| Keywords: | non-ionic surfactant sucrose fatty acid esters synthesis surface chemical property |
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