棉秆纤维素氨基甲酸酯的合成  

The Synthesis of Cotton Stalk Cellulose Carbamate

作　　者：高辉[1] 刘雁红[1] 陈婧[1] 朱振元[1] 

机构地区：[1]食品营养与安全教育部重点实验室,天津科技大学食品工程与生物技术学院,天津300457

出　　处：《食品研究与开发》2011年第5期20-24,共5页Food Research and Development

基　　金：天津市应用基础及前沿技术研究计划一般项目“离子液体纤维素氨基甲酸酯的合成研究”(07JCYBJC01900)

摘　　要：以棉秆和尿素为原料在离子液体中一步合成纤维素氨基甲酸酯的方法,探讨了氢氧化钠溶液浓度、活化时间、老成时间、尿素溶液浓度、尿素溶液浸泡时间、反应温度及酯化反应时间7种影响因素,通过正交试验确定其最优合成条件是:活化时间为7 h,反应温度为150℃,酯化反应时间为3.5 h,且最优条件下可使酯化产物的含氮量稳定在8%左右。产物红外光谱及凯氏定氮分析表明尿素与纤维素完成了酯化反应。In ionic liquid,cellulose carbamate was synthesized in one step by using raw material of cotton stalks and urea.The effective factors such as concentration of sodium hydroxide,activation time,ageing time,concentration of urea solution,dunking time of urea solution,reaction temperature and esterification time were studied.The optimum conditions were determined by orthogonal experiment,which are as follows： activation time is 7 h,reaction temperature is 150 ℃,esterification time is 3.5 h.Under the condition,the nitrogen content of esterification produce is about 8 %.The extent of the esterification reaction between fiber and urea could be identified by Infrared Spectroscopy and Kjeldahl Determination

关 键 词：离子液体 纤维素氨基甲酸酯 棉秆 

分 类 号：TQ352.1[化学工程]