马尾松树皮在离子液体中的溶解及组分分离研究  

Study on the Dissolution and Fractionation of Pinus Massoniana Bark in Ionic Liquid

作　　者：黄健[1,2,3] 朱宇[1] 陈瑞英[4] 林春香[1,2,3] HUANG Jian;ZHU Yu;CHEN Ruiying;LIN Chunxiang(School of Advanced Manufacturing,Fuzhou University,Jinjiang,Fujian Province,362200;Key Laboratory of Pulp and Paper Science&Technology of Ministry of Education/Shandong Province,Qilu University of Technology,Ji’nan,Shandong Province,250353;College of Environment and Resources,Fuzhou University,Fuzhou,Fujian Province,350108;College of Material Engineering,Fujian Agriculture and Forestry University,Fuzhou,Fujian Province,350116)

机构地区：[1]福州大学先进制造学院,福建晋江362200 [2]齐鲁工业大学制浆造纸科学与技术教育部(山东省重点实验室),山东济南250353 [3]福州大学环境与资源学院,福建福州350108 [4]福建农林大学材料工程学院,福建福州350116

出　　处：《中国造纸学报》2021年第4期1-8,共8页Transactions of China Pulp and Paper

基　　金：福建省自然科学基金(2020J01506);制浆造纸科学与技术教育部/山东省重点实验室开放基金项目(KF201816);福建省教育厅科技项目(JAT200011);福州大学科研启动基金(GXRC20038)。

摘　　要：针对目前树皮组分难以有效利用的问题,以离子液体1-烯丙基-3-甲基咪唑氯盐([Amim]Cl)为溶剂,对球磨后的马尾松(Pinus massoniana L.)树皮进行溶解,随后以NaOH溶液及乙醇为沉淀剂,对树皮中的纤维素、木质素和半纤维素组分进行分级分离。结果表明,球磨24 h后的马尾松树皮在100℃、溶解5 h的条件下,能够在离子液体中完全溶解;再生后树皮中纤维素的晶型由I型转变为II型,结晶度降低,但再生后树皮主要化学成分与原料相同。采用1%NaOH溶液及乙醇溶液处理溶解后的树皮可有效分离得到纤维素、木质素和半纤维素,分离后各组分的化学结构未发生明显改变。离子液体经5次循环再利用后,其回收率依旧可以保持90%以上。The ball-milled Pinus massoniana(Pinus massoniana L.)bark was dissolved in ionic liquid—1-allyl-3-methylimidazolium chloride([Amim]Cl)and subsequently fractionated from the bark to cellulose,lignin,and hemicellulose using dilute alkali and ethanol solution as the precipitant.The results showed that Pinus massoniana bark could be completely dissolved in[Amim]Cl at 100℃for 5 h after 24 h of ball milling.After regeneration,the cellulose crystal form of the bark was changed from type I to type II with decreased crystallinity while the chemical structure of each component in the bark did not change.Cellulose,hemicellulose,and lignin could be fractionated by treating the abovementioned dissolved bark with 1%NaOH and ethanol solution with negligible change in the chemical structure of each component.After recycled and reused for 5 times,the ionic liquids maintained a recovery rate above 90%.

关 键 词：离子液体 马尾松树皮 组分分离 木质纤维素 

分 类 号：TS721[轻工技术与工程—制浆造纸工程]