蔗渣纤维素在离子液体中的溶解与再生  

Dissolution and regeneration of sugarcane bagasse cellulose in ionic liquid

作　　者：王犇[1,2] 曹妍[2] 黄科林[3,4] 李会泉[2] 廖丹葵[1] 王金淑[3] 

机构地区：[1]广西大学化学化工学院,广西南宁530004 [2]中国科学院过程工程研究所,北京100190 [3]北京工业大学材料与科学工程学院,北京100124 [4]广西化工研究院,广西南宁530001

出　　处：《化工学报》2010年第6期1592-1598,共7页CIESC Journal

基　　金：国家重点基础研究发展计划项目(2009CB219901);广西自然科学基金项目(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,制备出蔗渣纤维素再生膜。通过偏光显微镜观察了蔗渣纤维素的溶解过程,采用红外光谱、扫描电镜、X射线衍射、热重及力学性能等分析测试手段,对蔗渣纤维素及再生膜进行表征,结果表明:未经活化的蔗渣纤维素可快速、直接溶解在离子液体中,再生前后蔗渣纤维素发生了从纤维素Ⅰ到纤维素Ⅱ的晶型转变,蔗渣纤维素再生膜具有致密的结构,热力学稳定性达到292℃,拉伸强度高达144MPa。Regenerated cellulose film is prepared successfully from sugarcane bagasse cellulose in ionic liquid 1-allyl-3-methylimidazolium chloride （[Amim]Cl）.Its dissolution process was viewed by polarizing microscope.Properties and structures of the regenerated cellulose films obtained were characterized by infrared spectroscopes,scanning electron microscopy,X-ray diffraction,thermogravimetry （TGA） and strength test.The results showed that [Amim]Cl is a good non-derivatizing solvent for sugarcane bagasse cellulose whose crystalline form transformed completely from cellulose Ⅰ to cellulose Ⅱ after regenerated directly from [Amim]Cl solution.The cellulose film obtained by regeneration showed a dense structure and its thermal stability and tensile strength could be up to 292℃ and 144 MPa respectively.

关 键 词：离子液体 蔗渣纤维素 溶解 再生 

分 类 号：TQ352.71[化学工程]