有机碱催化制备马来酸单淀粉酯的研究  

Study on the Preparation of Maleic Acid Ester with Organic Base Catalyst

作　　者：罗菊香[1] 崔国星[1] 张琳君[1] 陈朝阳[1] 

机构地区：[1]三明学院化学与生物工程系,福建三明365004

出　　处：《安徽农业科学》2011年第34期21348-21349,21471,共3页Journal of Anhui Agricultural Sciences

基　　金：福建省科技计划重大项目(2010H6020);福建省科技计划项目(JK2010059);高校服务海西建设重点项目(HX200803)

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。[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.

关 键 词：活化淀粉 马来酸酐 有机碱 酯化淀粉 取代度 

分 类 号：O636[理学—高分子化学]