Effects of carbonization temperatures on microstructure of carbon fiber precursors prepared from liquefied wood

作     者：MA Xiao-j un ZHAO Guang-jie 

作者机构：College of Packaging ＆ Printing Engineering Tianjin University of Science ＆ Technology Tianjin 300222 E R. China College of Materials Science and Technology Beijing Forestry University Beijing 100083 P. R. China 

出 版 物：《Forestry Studies in China》 (中国林学（英文版）)

年 卷 期：2009年第11卷第4期

页      面：238-242页

学科分类：0832[工学-食品科学与工程（可授工学、农学学位）] 12[管理学] 120203[管理学-旅游管理] 1202[管理学-工商管理] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：supported by the Na-tional Natural Science Foundation of China (Grant No. 30901133) 

主　　题：carbon fiber liquefied wood microstructure temperature 

摘      要：In order to enlarge the utilization field of wood and decrease the costs of carbon fibers, carbon fiber precursors from liquefied wood were prepared by soaking liquefied wood in a solution containing hydrochloric acid and formaldehyde, after melt-spinning by adding hexamethylenetetramine. The microstructure evolution of the precursor during carbonization was studied by FTIR, X-ray analysis and Raman spectroscopy. The results show that precursors from liquefied wood above 400℃had diffraction peaks corresponding to the （100） crystal plane. When the carbonization temperature reached 500℃, Raman spectroscopy showed the D peak at wave number of 1360 cm^-1 and the G peak at 1595 cm^-1. By increasing the carbonization temperature, the microstructure of the precursors became more ordered. Although the structure of the precursor changed at 500 and 800℃, the peaks at 1632 and 1454 cm^-1 corresponding to the characteristic vibrations of aromatic rings, remained during carbonization. This implies that the precursor from liquefied wood cannot be easily formed into graphite.