| 有机碱催化制备马来酸单淀粉酯的研究 |
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| 引用本文： | 罗菊香,崔国星,张琳君,陈朝阳.有机碱催化制备马来酸单淀粉酯的研究[J].安徽农业科学,2011,39(34):21348-21349,21471. |
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| 作者姓名： | 罗菊香 崔国星 张琳君 陈朝阳 |
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| 作者单位： | 三明学院化学与生物工程系,福建三明,365004 |
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| 基金项目： | 福建省科技计划重大项目，福建省科技计划项目，高校服务海西建设重点项目 |
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| 摘 要： | 目的]以木薯淀粉为原料制备马来酸单淀粉酯。方法]将木薯淀粉经乙醇活化之后,以马来酸酐为酯化剂,丙酮为反应溶剂,吡啶为催化剂,采用单因素试验法优化马来酸单淀粉酯的制备条件。结果]制备马来酸单淀粉酯的最佳工艺条件：活化淀粉用量为1 g,反应温度为50℃,活化淀粉和酸酐的摩尔比为1∶3,吡啶用量为1 ml,反应时间为7 h。结论]采用最佳的制备条件,制得取代度为0.332的马来酸单淀粉酯。
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| 关 键 词： | 活化淀粉 马来酸酐 有机碱 酯化淀粉 取代度 |
Study on the Preparation of Maleic Acid Ester with Organic Base Catalyst |
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| Institution: | LUO Ju-xiang et al(Department of Chemistry and Biology Engineering,Sanming University,Sanming,Fujian 365004) |
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| Abstract: | Objective] To prepare maleic acid ester with tapioca starch.Method] Maleic acid ester was prepared after the tapioca starch was activated,with maleic anhydride as agent,acetone as solvent,and pyridine as catalyst.The preparation conditions of maleic acid ester were optimized by single-factor test.Result] The best preparation conditions of maleic acid ester were:1g activated tapioca starch,50 ℃reaction temperature,1∶ 3 molar ratio of activated starch to maleic anhydride,1 ml pyridine and 7 h reaction time.Conclusion] By adopting the best preparation conditions,the degree of substitution for maleic acid ester was 0.332. |
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| Keywords: | Activated starch Maleic anhydride Organic base Esterification of starch Degree of substitution |
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