| 光谱学与光谱分析 |
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| Study of Thermal Perturbation of Natural Bamboo Fiber by Two Dimensional Correlation Analysis and Fourier Transform Infrared Spectroscopy |
| HUANG An-min1,WANG Ge2,ZHOU Qun3,LIU Jun-liang1*,SUN Su-qin3* |
1. Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China
2. The International Center for Bamboo and Rattan，Beijing 100102, China
3. Department of Chemistry, Tsinghua University, Beijing 100084, China |
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Abstract The Fourier transform infrared spectroscopy (FTIR) combined with generalized two-dimensional correlation analysis was applied to study the mini-heating process of natural bamboo fiber. The absorption peaks of natural bamboo fiber and bamboo in the FTIR spectra were different, which showed the contents of lignin and hemicelluloses of natural bamboo fiber was lower than those of bamboo. The changes in absorption peaks of natural bamboo fiber in the FTIR spectra at different temperatures were inconspicuous during heating up from 50 to 120 ℃, which showed that there was not oxidation reaction in natural bamboo fiber during the process. With the help of 2D correlation analysis, the changes of different groups of natural bamboo fiber and bamboo during heating process were reflected. The strongest autopeak of them was all aroused at 1 665 cm-1 in synchronous spectrum. The difference was that there were several weak auto-peaks and cross peaks in the natural bamboo fiber, but in the bamboo, one stronger 5×5 group was aroused in the 833-1 230 cm-1. Region the reason was the difference in chemistry composition and the change degree during heating process. In conclusion, the 2D correlation analysis of FTIR can be a new method to analyze the microcosmic dynamic change in the structure of natural bamboo fiber and bamboo during the mini-heating process and also offers an important theory gist for the study of oxidation mechanism of them.
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Received: 2007-05-10
Accepted: 2007-08-20
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Corresponding Authors:
LIU Jun-liang
E-mail: ham2003@caf.ac.cn
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