Mechanical and Thermal Properties of All-Wood Biocomposites through Controllable Dissolution of Cellulose with Ionic Liquid

被引:12
作者
Chen, Ke [1 ]
Xu, Weixin [2 ]
Ding, Yun [2 ]
Xue, Ping [1 ]
Sheng, Pinghou [3 ]
Qiao, Hui [2 ]
Wang, Suwei [1 ]
Yu, Yang [4 ]
机构
[1] Beijing Univ Chem Technol, Coll Mech & Elect Engn, Beijing 100029, Peoples R China
[2] Beijing Univ Chem Technol, Coll Mat Sci & Engn, Beijing 100029, Peoples R China
[3] China Text Acad, State Key Lab Biobased Fiber Mfg Technol, Beijing 100025, Peoples R China
[4] Univ Technol Sydney, Sch Civil & Environm Engn, Sydney, NSW 2007, Australia
关键词
all-wood biocomposites; ionic liquid; controllable dissolution; cellulose; mechanical properties; thermal stability; COMPOSITES; FLOUR;
D O I
10.3390/polym12020361
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
All-wood biocomposites were prepared with an efficient method. The ionic liquid of 1-butyl-3-methylimidazolium chloride (BMIMCl) was used to impregnate manchurian ash (MA) before hot-pressing, and the all-wood biocomposites were prepared by controllable dissolving and regenerating the cellulose in MA. The Fourier transform infrared analysis suggested that all the components of MA remained unchanged during the preparation. X-ray diffraction, thermogravimetric and scanning electron microscope analysis were carried out to study the process parameters of hot-pressing pressure and time on the crystallinity, thermal properties and microstructure of the all-wood biocomposites. The tensile strength of the prepared all-wood biocomposites reached its highest at 212.6 MPa and was increased by 239% compared with that of the original MA sample. The thermogravimetric analysis indicated that as the thermo-stability of the all-wood biocomposites increased, the mass of the residual carbon increased from 19.7% to 22.7% under a hot-pressing pressure of 10 MPa. This work provides a simple and promising pathway for the industrial application of high-performance and environmentally friendly all-wood biocomposites.
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页数:11
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