木质纤维素气凝胶在离子液体中的制备及表征

卢芸; 邱坚; 孙庆丰; 李坚

doi:10.3981/j.issn.1000-7857.2014.h1.003

科技导报 >

2014 , Vol. 32 >Issue 4-5: 29 - 33

DOI: https://doi.org/10.3981/j.issn.1000-7857.2014.h1.003

专题论文

木质纤维素气凝胶在离子液体中的制备及表征

卢芸 ,
邱坚 ,
孙庆丰 ,
李坚

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1. 东北林业大学材料科学与工程学院, 哈尔滨 150040;
2. 西南林业大学材料工程学院, 云南省木材胶黏剂及胶合制品重点实验室, 昆明 650224

卢芸，博士研究生，研究方向为木材功能性改良及生物质基复合材料，电子信箱：luyun@nefu.edu.cn

收稿日期: 2013-12-16

修回日期: 2014-01-20

网络出版日期: 2014-04-09

基金资助

国家自然科学基金面上项目（31270590）；中国博士后科学基金资助项目（2013M540263）；《科技导报》“博士生创新研究资助计划”项目（kjdb2012006）

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Preparation and Characterization of Lignocellulose Aerogel in Ionic Liquid

LU Yun ,
QIU Jian ,
SUN Qingfeng ,
LI Jian

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1. Material Science and Engineering College, Northeast Forestry University, Harbin 150040, China;
2. Yunnan Key Laboratory of Wood Adhesives and Glue Products, College of Materials Engineering, Southwest Forestry University, Kunming 650224, China

Received date: 2013-12-16

Revised date: 2014-01-20

Online published: 2014-04-09

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摘要

为制备一种新型的木质基新材料，采用离子液体将木粉溶解，经循环冻融工艺处理结合临界点干燥即得木质纤维素气凝胶。采用扫描电镜（SEM）、透射电镜（TEM）和X 射线衍射仪（XRD）对制备的木质纤维素气凝胶的微观形貌和结晶特性进行分析表征。结果表明，制备出的木质纤维素气凝胶具有的三维纤丝网状结构，通过冻融循环可以逐渐增强为片状结构，纳米纤丝的网络支架影响了气凝胶的多层级微米-纳米形貌；木质纤维素气凝胶的结晶度随冻融次数的增加呈先增加后减小的变化趋势；并阐释分析了木质纤维素气凝胶的形成机理。

关键词： 木质纤维素气凝胶; 离子液体; 三维网络结构

本文引用格式

卢芸 , 邱坚 , 孙庆丰 , 李坚 . 木质纤维素气凝胶在离子液体中的制备及表征[J]. 科技导报, 2014 , 32(4-5) : 29 -33 . DOI: 10.3981/j.issn.1000-7857.2014.h1.003

Abstract

To prepare a novel wood-based material, wood powder without any pre-treatment was dissolved in ionic liquid. With a circulated freezing-thawing procedure and critical point drying method, lignocellulose aerogel was successfully prepared. Morphological features and crystalline characteristics of the as-prepared material were characterized by field emission electron microscopy (SEM), transmission electron microscope, and X-ray diffraction (XRD). The results showed that the prepared lignocellulose aerogel possesses a three-dimensional structure of open fibrillar network and other novel nanostructure cellulose materials. The structure of the aerogels can be tuned from nanofibrillar to sheet-like skeletons with hierarchical micro- and nanoscale morphology by modifying the freezethaw cycles. The crystallinity first increased and then decreased along with increase of the freezing-thawing times. The formation mechanism of the lignocellulose aerogel was also discussed in this paper.

Key words： lignocellulose aerogel; ionic liquid; three-dimensional network

参考文献

[1] Ragauskas A J, Williams C K, Davison B H, et al. The path forward for biofuels and biomaterials[J]. Science, 2006, 311(5760): 484-489.
[2] Huber G W, Dumesic J A. An overview of aqueous- phase catalytic processes for production of hydrogen and alkanes in a biorefinery[J]. Catalysis Today, 2006, 111(1): 119-132.
[3] 卢芸, 孙庆丰, 李坚. 高频超声法纳米纤丝化纤维素的制备与表征[J]. 科技导报, 2013, 31(15): 17-22. Lu Yun, Sun Qingfeng, Li Jian. Preparation and characterization of nanofiber films and foams based on ultrasonic nanofibrillated cellulose from wood[J]. Science & Technology Review, 2013, 31(15): 17-22.
[4] Huber G W, Corma A. Synergies between bio-and oil refineries for the production of fuels from biomass[J]. Angewandte Chemie International Edition, 2007, 46(38): 7184-7201.
[5] Vispute T P, Zhang H, Sanna A, et al. Renewable chemical commodity feedstocks from integrated catalytic processing of pyrolysis oils[J]. Science, 2010, 330(6008): 1222-1227.
[6] 田野, 吴敏, 孟令蝶, 等. 天然纤维素纤维改性及其对水中砷的吸附[J]. 科技导报, 2010, 28(22): 29-32. Tian Ye, Wu Min, Meng Lingdie, et al. Modification of natural cellulose fibers for arsenic adsorption from water[J]. Science & Technology Review, 2010, 28(22): 29-32.
[7] Kim H, Ralph J, Akiyama T. Solution-state 2D NMR of ball-milled plant cell wall gels in DMSO-d 6[J]. BioEnergy Research, 2008, 1(1): 56-66.
[8] Lynd L R, Weimer P J, Van Zyl W H, et al. Microbial cellulose utilization: fundamentals and biotechnology[J]. Microbiology and Molecular Biology Reviews, 2002, 66(3): 506-577.
[9] Lu F, Ralph J. Non-degradative dissolution and acetylation of ballmilled plant cell walls: High- resolution solution- state NMR[J]. The Plant Journal, 2003, 35(4): 535-544.
[10] Heinze T, Dicke R, Koschella A, et al. Effective preparation of cellulose derivatives in a new simple cellulose solvent[J]. Macromolecular Chemistry and Physics, 2000, 201(6): 627-631.
[11] Wang Z, Yokoyama T, Chang H, et al. Dissolution of beech and spruce milled woods in LiCl/DMSO[J]. Journal of Agricultural and Food Chemistry, 2009, 57(14): 6167-6170.
[12] 陈砺, 邓丽华, 严宗诚, 等. 木质纤维素水解制化学品的研究进展[J]. 科技导报, 2011, 29(34): 68-72. Chen Li, Deng Lihua, Yan Zongcheng, et al. Research progress of lignocellulose hydrolysis of chemicals[J]. Science & Technology Review, 2011, 29(34): 68-72.
[13] Swatloski R P, Spear S K, Holbrey J D, et al. Dissolution of cellulose with ionic liquids[J]. Journal of the American Chemical Society, 2002, 124(18): 4974-4975.
[14] Fukaya Y, Sugimoto A, Ohno H. Superior solubility of polysaccharides in low viscosity, polar, and halogen-free 1,3-dialkylimidazolium formates[J]. Biomacromolecules, 2006, 7(12): 3295-3297.
[15] Honglu X, Tiejun S. Wood liquefaction by ionic liquids[J]. Holzforschung, 2006, 60(5): 509-512.
[16] Zhao H, Baker G A, Song Z, et al. Designing enzyme-compatible ionic liquids that can dissolve carbohydrates[J]. Green chemistry, 2008, 10(6): 696-705.
[17] Peng X, Ren J, Sun R. Homogeneous esterification of xylan-rich hemicelluloseswithmaleicanhydrideinionicliquid[J].Biomacromolecules, 2010, 11(12): 3519-3524.
[18] Kilpeläinen I, Xie H, King A, et al. Dissolution of wood in ionic liquids[J]. Journal of Agricultural and Food Chemistry, 2007, 55(22): 9142-9148.
[19] Pu Y, Jiang N, Ragauskas A J. Ionic liquid as a green solvent for lignin[J]. Journal of Wood Chemistry and Technology, 2007, 27(1): 23-33.
[20] Tan S S Y, MacFarlane D R, Upfal J, et al. Extraction of lignin from lignocellulose at atmospheric pressure using alkylbenzenesulfonate ionic liquid[J]. Green Chemistry, 2009, 11(3): 339-345.
[21] 樊国栋, 康丽, 李刚辉. 离子液体在糖酯合成中的研究进展[J]. 科技导报, 2012, 30(2): 70-73. Fan Guodong, Kang Li, Li Ganghui. Progress of the synthesis of sugar esters in ionic liquids[J]. Science & Technology Review, 2012, 30(2): 70-73.
[22] Aaltonen O, Jauhiainen O. The preparation of lignocellulosic aerogels from ionic liquid solutions[J]. Carbohydrate Polymers, 2009, 75(1): 125-129.
[23] Li J, Lu Y, Yang D, et al. Lignocellulose aerogel from wood- ionic liquid solution (1-allyl-3-methylimidazolium chloride) under freezing and thawing conditions[J]. Biomacromolecules, 2011, 12(5): 1860-1867.
[24] Lu Y, Sun Q, Yang D, et al. Fabrication of mesoporous lignocellulose aerogels from wood via cyclic liquid nitrogen freezing-thawing in ionic liquid solution[J]. Journal of Materials Chemistry, 2012, 22(27): 13548-13557.
[25] Segal L, Creely J J, Martin Jr A E, et al. An empirical method for estimating the degree of crystallinity of native cellulose using the Xray diffractometer[J]. Textile Research Journal, 1959, 29(10): 786-794.

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