To obtain cheap and clean waste newspaper based cellulose aerogel (WNCA) with water and oil absorption properties, the 1-allyl-3-methylimidazolium chloride ionic liquid（AmImCl）was employed to dissolve waste newspapers without any pre-treatments. A pure cellulose hydrogel was acquired via solvent exchange from deionized water to ethanol, followed by solvent exchange from ethanol to tert-butanol, and after freeze-drying, flexible WNCA was prepared. The morphological characteristics, crystalline properties and crystallinity of the obtained WNCA were analyzed using Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and X-Ray Diffraction (XRD). The results showed that WNCA has a favorable porous structure of three-dimensional networks. The crystalline type of the WNCA is the cellulose Ⅰ type, and the crystallinity reaches 62.6%, increasing by 12.8% as compared with that of the raw material. The aerogel is able to absorb water and waste oil weighing 18-20 times of its own weight, and 99.8% of liquid can be removed through simple extrusion, indicating it has satisfactory recycling performance. Meanwhile, the WNCA shows good mechanical properties and can bounce. All reagents used in this study are environmentally friendly, providing clues for green preparation of aerogels.
JIN Chunde
,
HAN Shenjie
,
WANG Jin
,
WANG Zhe
. Green Preparation of Cellulose Aerogel from Waste Newspapers and Its Performance in Oil Spill Cleaningc[J]. Science & Technology Review, 2014
, 32(4-5)
: 40
-44
.
DOI: 10.3981/j.issn.1000-7857.2014.h1.005
[1] 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.
[2] 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.
[3] 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.
[4] 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.
[5] Holbrey D, Seddon R. Ionic liquids[J]. Clean Products and Processes, 1999, 1(4): 223-236.
[6] Antonietti M, Kuang D, Smarsly B, et al. Ionic liquids for the convenient synthesis of functional nanoparticles and other inorganic nanostructures[J]. Angewandte Chemie International Edition, 2004, 43 (38): 4988-4992.
[7] Kubisa P. Ionic liquids as solvents for polymerization processes— progress and challenges[J]. Progress in Polymer Science, 2009, 34(12): 1333-1347.
[8] Tan Y, MacFarlane 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.
[9] Zhang H, Wu J, Zhang J, et al. 1-Allyl-3-methylimidazolium chloride room temperature ionic liquid: A new and powerful nonderivatizing solvent for cellulose[J]. Macromolecules, 2005, 38(20): 8272-8277.
[10] Zhu S, Wu Y, Chen Q, et al. Dissolution of cellulose with ionic liquids and its application: A mini-review[J]. Green Chemistry, 2006, 8(4): 325-327.
[11] Sehaqui H, Zhou Q, Berglund L A. High-porosity aerogels of high specific surface area prepared from nanofibrillated cellulose (NFC)[J]. Composites Science and Technology, 2011, 71(13): 1593-1599.
[12] 陈嵩岳. 废旧报纸做肥料对植物生长影响的研究[D]. 长春: 吉林大 学, 2009. Chen Songyue. Study of the effect of fertilizer made by waste paper on plant growth[D]. Changchun: Jilin University, 2009.
[13] Nogi M, Yano H. Transparent nanocomposites based on cellulose produced by bacteria offer potential innovation in the electronics device industry[J]. Advanced Materials, 2008, 20(10): 1849-1852.
[14] Olsson T, Samir A, Salazar-Alvarez G, et al. Making flexible magnetic aerogels and stiff magnetic nanopaper using cellulose nanofibrils as templates[J]. Nature Nanotechnology, 2010, 5(8): 584-588.
[15] Nyström G, Razaq A, Strømme M, et al. Ultrafast all-polymer paperbased batteries[J]. Nano Letters, 2009, 9(10): 3635-3639.
[16] Alila S, Besbes I, Vilar R, et al. Non-woody plants as raw materials for production of microfibrillated cellulose (MFC): A comparative study[J]. Industrial Crops and Products, 2013, 41: 250-259.
[17] Brinchi L, Cotana F, Fortunati E, et al. Production of nanocrystalline cellulose from lignocellulosic biomass: Technology and applications[J]. Carbohydrate Polymers, 2013, 94(1): 154-169.
[18] Hu L, Liu N, Eskilsson M, et al. Silicon-conductive nanopaper for Liion batteries[J]. Nano Energy, 2013, 2(1):138-145.
[19] 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.
[20] Gesser D, Goswami C. Aerogels and related porous materials[J]. Chemical Reviews, 1989, 89(4): 765-788.
[21] Nelson L, O'Connor T. Relation of certain infrared bands to cellulose crystallinity and crystal lattice type. Part II. A new infrared ratio for estimation of crystallinity in celluloses I and II[J]. Journal of Applied Polymer Science, 1964, 8(3): 1325-1341.
