纤维素离子液体中溶解及抗溶剂下再生性能研究  

Study on the Property of Cellulose Dissolution in Ionic Liquids and the Regeneration in Anti-Solvents

作　　者：郑敏佳 杜春燕 伏兰兰 韦雅智 俞婉圳 胡洁豪 巨朝阳 ZHENG Minjia;DU Chunyan;FU Lanlan;WEI Yazhi;YU Wanzhen;HU Jiehao;JU Zhaoyang(College of Chemical&Material Engineering,Qu Zhou University,Quzhou,Zhejiang 324000)

机构地区：[1]衢州学院化学与材料工程学院,浙江衢州324000

出　　处：《化工生产与技术》2022年第5期14-17,I0003,共5页Chemical Production and Technology

基　　金：国家级大学生创新训练项目(202111488046)。

摘　　要：为了对比不同离子液体在纤维素中的溶解效果及不同抗溶剂下的再生效果,研究了纤维素在不同咪唑基离子液体中的溶解及再生实验,并对再生后的纤维素进行表征。结果表明,离子液体对纤维素的溶解是一个物理过程,纤维素再生前后的晶型由I型向II型发生转变。纤维素在[Emim]OAc离子液体中100℃、95 min,其溶解率为100%。不同离子液体溶解效果为[Emim]OAc>[Bmim]Cl>[Amim]Cl>[Emim]Cl;当加入不同抗溶剂中再生,其再生效果高到低排序依次为水>甲醇>乙醇。此部分研究对纤维素溶解以及再生利用具有一定的基础指导意义。To investigate the effect of cellulose dissolution in ionic liquids(ILs)and the cellulose regeneration in different antisolvents,we had studied the cellulose dissolution and regeneration in imidazolium based ILs and the regenerated cellulose was characterized.The results show that the cellulose dissolution in ILs is a physical process,and the crystal form of cellulose was changed from I to II after its regeneration.The yield of cellulose dissolution was 100%at 100℃for 95 min in[Emim]OAc.The sequence of cellulose dissolution is[Emim]OAc>[Bmim]Cl>[Amim]Cl>[Emim]Cl.When different antisolvents were added in the system,the cellulose regeneration order follows:water>methanol>ethanol.It will give some basic guidance for cellulose dissolution and regeneration.

关 键 词：纤维素 离子液体 溶解 再生 

分 类 号：TQ352.62[化学工程]