蔗渣纤维素在离子液体中的均相混合酰化研究  

Homogeneous synthesis of cellulose acetate butyrates from sugarcane baggage cellulose in ionic liquid

作　　者：黄科林[1,2] 王犇[3] 曹妍[3] 李会泉[3] 王金淑[1] 

机构地区：[1]北京工业大学,北京100124 [2]广西化工研究院,广西南宁530001 [3]中国科学院过程工程研究所,北京100190

出　　处：《现代化工》2009年第S2期105-108,共4页Modern Chemical Industry

基　　金：国家"973"计划资助项目(2009CB219901);广西科学基金项目(桂科自0991024Z)

摘　　要：以蔗渣纤维素为原料,在1-烯丙基-3-甲基咪唑氯盐([Amim]Cl)离子液体中,以乙酸酐和丁酸酐为酰化试剂,制备出不同取代度的醋酸丁酸纤维素产品,通过用FT-IR1、H-NMR、TGA等手段对产品进行了结构和性能表征。研究表明,通过对反应条件的控制可得到具有特定酰基含量的CAB,本方法得到了预期结构的CAB产品,制备出的CAB产品乙酰基含量为3.6%~17.4%,丁酰基含量为26.5%~46.0%。热重结果显示,CAB在370℃才达到最快分解温度,表明CAB具有良好的热稳定性。Cellulose acetate butyrates with different degree of substitution were prepared from sugarcane baggage cellulose in ionic liquid 1-allyl-3-methylimidazolium chloride(Cl),using acetic anhydride and butyric anhydride as the acylating agents.The structure and thermal property of the products were identified by FT-IR,1H-NMR and TGA.The results show that different butyryl or acetyl contents of CAB can be obtained from different reaction conditions.The CAB products,with acetyl contents between 3.6% and 17.4%,butyryl contents ranging from 26.5% to 47% are obtained;TGA analysis implies the CAB products has good thermal stability,with the fastest decomposition rate at 370℃.

关 键 词：离子液体 蔗渣纤维素 醋酸丁酸纤维素 酯化 

分 类 号：TQ352.713[化学工程]