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
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.
[1] PENG Yun, SHEN Yi, WU Pei-yi, et al(彭 云, 沈 怡, 武培怡, 等). Chinese J. Anal. Chem.(分析化学), 2005, 33(10)：1499. [2] Noda I. Bull. Am. Phys., 1986, 31: 520. [3] Noda I. Appl. Spectro., 1993, 47: 1329. [4] SUN Su-qin, ZHOU Qun, LIU Jun, et al(孙素琴, 周 群, 刘 军, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2004，24（4）：427. [5] DENG Yue-e, ZHOU Qun, SUN Su-qin(邓月娥, 周 群, 孙素琴). Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2006，26（4）：636. [6] DENG Yue-e, SUN Su-qin, ZHOU Qun(邓月娥, 孙素琴, 周 群). Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2006，26（7）：1242. [7] YU Lu, SUN Su-qin, ZHOU Qun(郁 露, 孙素琴, 周 群). Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2006，26（12）：2181. [8] ZHOU Qun, LI Jing, LIU Jun, et al(周 群, 李 静, 刘 军, 等). Chinese J. Anal. Chem.(分析化学), 2003, 31(9)：1058. [9] Zhou Q, Sun S Q, Zuo L. Vib. Spectro., 2004, 36(2): 207. [10] HUA Rui，SUN Su-qin, ZHOU Qun(华 瑞, 孙素琴, 周 群). Chinese J. Anal. Chem.(分析化学), 2003, 31(5)：541. [11] L Guang-hua，SUN Su-qin，LIANG Xi-yun, et al(吕光华, 孙素琴, 梁曦云, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2004，24（3）：311. [12] Li Y M, Sun S Q, Zhou Q, et al. Vib. Spectro., 2004, 36(2): 227. [13] Zuo L, Sun S Q, Zhou Q, et al. J. Pharm. Biomed. Anal., 2003, 30(5): 1491. [14] Liu H X, Lü G H, Sun S Q. Vib. Spectro., 2006, 40(2): 202. [15] GU Wei-xing, WU Pei-yi, YANG Yu-liang(顾伟星，武培怡，杨玉良). Acta Chimica Sinica（化学学报），2004, 62(20)：2123. [16] YANG Zhong-kai, SHI Li-min, JIANG Jian-xin, et al(杨中开，史丽敏，蒋建新，等). Plant Fibers and Products（中国麻业），2007, 27(6)：319. [17] ZHOU Jian-ping(周建萍). Shanghai Textil Science and Technology（上海纺织科技），2006, 34(5)：59. [18] LI Jian(李 坚). Wood Spectroscope(木材波谱学). Beijing: Science Press(北京：科学出版社)，2003. 104.
