Study on the Corn Stover Lignin Oxidized by Chlorine Dioxide and Modified by Furfuryl Alcohol
SUN Yong1,2, ZHANG Jin-ping1,2, YANG Gang1,2, LI Zuo-hu1
1. National Key Laboratory of Biochemical Engineering, Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100080, China 2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
Abstract:The Fourier transform infrared spectroscopy (FTIR), ultraviolet-visible spectroscopy (UV-Visible), nuclear magnetic resonance spectroscopy (1H NMR) and TG analysis were used to study the oxidation of corn stover lignin by chloride dioxide and subsequently modified by furfuryl alcohol. The results were as following: The selective oxidation of lignin by chlorine dioxide was obtained by spectroscopy study. FTIR showed that the characteristic absorbance peaks of aromatic units were decreased after chloride dioxide oxidation. The increased absorbance for the band around 1720 cm-1 corresponding to carbonyl stretching was achieved in the oxidized lignin and the lignin modified with furfuryl alcohol. The ultraviolet-visible spectroscopy showed that the absorbance around 280nm was largely reduced after the lignin was oxidized. The 1H NMR spectroscopy also showed the decrease of aromatic units and methoxyl group in the oxidized lignin. All these indicated the formation of muconic acid and ester, or quinone derivatives when the lignin was selectively oxidized by chloride dioxide. The modification by furfuryl alcohol made the oxidized lignin more thermally stable.
孙勇1,2,张金平1,2,杨刚1,2,李佐虎1. 玉米秸秆木质素氧化与改性的研究[J]. 光谱学与光谱分析, 2007, 27(10): 1997-2000.
SUN Yong1,2, ZHANG Jin-ping1,2, YANG Gang1,2, LI Zuo-hu1. Study on the Corn Stover Lignin Oxidized by Chlorine Dioxide and Modified by Furfuryl Alcohol. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(10): 1997-2000.
[1] Daniel M, Vanessa T F, Vanessa F. Chemical Engineering Journal, 2005, 26(10): 1. [2] Fernandes D M, Winkler Hechenleitner A A, Job A E, et al. Polymer Degradation and Stability, 2006, 91: 1192. [3] William H, Trindade W G, Siegmund B, et al. Polymer Degradation and Stability, 2004, 86: 567. [4] SUN Yong, LI Zuo-hu, XIAO Xin, et al(孙 勇,李佐虎,肖 ,等). China Pulp and Paper Industry(中华纸业), 2005, 26(10): 58. [5] HUANG Jun-li(黄君礼). The Analytical Technology ofChlorine Dioxide(二氧化氯分析技术). Beijing: Chinese Environmental Science Press(北京:中国环境科学出版社), 2000. 25. [6] Hergert H L. Lignins, Occurrence, Formation, Structure and Reactions. New York: USA Wiley-Interscience, 1971. 267. [7] Faix O. Holzforschung, 1991, 45(Suppl.): 21. [8] Carman G B, Dominique B, Richard J A, et al. Industrial Crops and Products, 2004, 20: 205. [9] Ni Y, Van Heiningen A R P. Journal of Wood Chemical Technology, 1994, 14: 243. [10] Trindade W G, Hoareau W, Razera I A T, et al. Macromolecular Materials and Engineering, 2004, 289: 728. [11] Grtner A, Gellerstedt G, Tamminen T. Nordic Pulp Paper Research Journal, 1999, 14: 163. [12] Orfao J J M, Antunes F J A, Figueiredo J L. Fuel, 1999, 78: 349. [13] Faix O, Grunwald C, Beinhoff, et al. Holzforschung, 1992, 46: 525. [14] SHEN Qi-rong, XU Yong, YANG Hong, et al(沈其荣,徐 勇,杨 红,等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2005, 25(2): 211. [15] BAI Qi-lin, CHEN Shao-jiang, DONG Xiao-ling, et al(白琪琳,陈绍江,董晓玲,等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2006, 26(2): 271.