PREPARATION AND CHARACTERIZATION OF LIGNIN-BASED CARBON MICRO/NANO-FIBERS FROM CORN STALK ENZYMATIC HYDROLYSIS RESIDUES
Lignin-based carbon micro/nano-fibers were prepared from three types of lignin preparations,which were extracted from corn stalk enzymatic hydrolysis residue by various extract methods(ethanol,sodium hydroxide and formic acid/acetic acid aqueous solution).The three types of lignin were further converted into carbon micro/nano-fibers through three steps,including electrospinning,thermo-stabilization and carbonization under the same process conditions.The physical and chemical properties of lignin preparations were analyzed by gel permeation chromatography(GPC),Fourier transform infrared spectroscopy(FT-IR)and thermal gravimetric analysis(TGA)techniques.The thermal stabilities of prepared lignin precursors were investigated by differential scanning calorimeter(DSC)technique.The micro-morphology of lignin precursor fibers and carbonized fibers was characterized by scanning electron microscopy(SEM)technique.The mechanical properties of carbonized fibers were also evaluated in this paper.The results showed that the ethanol organoslov lignin was easily electrospun into fibers.However,the prepared fibers were not suitable to be used as precursors for carbon fiber due to their some stability.The prepared carbonized fibers from alkaline lignin demonstrated preferable micro-morphology and mechanical properties.
Xiaojuan Shi Xing Wang Biao Tang Kefu Chen Jinghui Zhou
Liaoning Key Laboratory of Plup and Papermaking Engineering,Dalian Polytechnic University Dalian,Lia State Kay Laboratory of Pulp and Paper Engineering,South China University of Technology Guangzhou,Gu
国际会议
第五届制浆造纸新技术国际研讨会(ISETPP)暨第三届国际造纸与环境学术大会(IPEC)
广州
英文
1-5
2016-11-07（万方平台首次上网日期，不代表论文的发表时间）