基于FTIR的针阔叶材木质素和纤维素特性  

Lignin and Cellulose Characteristics of Different Woods Based on FTIR

作　　者：胡爱华[1] 邢世岩[1] 巩其亮[1] 

机构地区：[1]山东农业大学,泰安271018

出　　处：《东北林业大学学报》2009年第9期79-81,90,共4页Journal of Northeast Forestry University

基　　金：山东省农业良种工程项目(200690)资助

摘　　要：采用红外光谱技术研究了银杏、雪松、毛白杨等30种针阔叶材的红外光谱,对表征其纤维素和木质素的特征吸收峰进行了研究,结果表明:①针叶材在1740cm-1处吸收峰峰值普遍低于阔叶材,1510cm-1处针叶材吸收峰峰值较阔叶材大,说明针阔叶树木材木质素和纤维素相对含量差异明显;②针叶材的1595/1505cm-1值小于阔叶材,1270/1230cm-1值大于阔叶材,说明针阔叶树种间木质素的组成不同;③银杏的红外光谱特征总体与针叶材一致,但1595/1505cm-1和1270/1230cm-1吸收峰吸收强度比值均接近阔叶材,表明银杏在木质素组成上有向阔叶树进化的趋势。The infrared spectroscopy of wood samples of 30 species, such as Ginkgo biloba L. , Cedrus deodara （ Roxb. ） G. Don. , and Populus tomentosa Carr , was studied by Fourier transform infrared （FTIR） technique. Characteristic absorption peak that symbolizes lignin and cellulose was analyzed. Results showed that, at 1 740 cm^-1 the absorption peak of softwood was generally lower than that of hardwood; however, the absorption peak of softwood was greater than that of hardwood at 1 510 cm^-1 , which indicates that there are significant differences in the relative contents of lignin and cellulose between softwood and hardwood. As to the ratio of peak value at 1 595 cm^-1 to that at 1 510 cm^-1, the softwood was smaller compared with hardwood, nonetheless, for the ratio of peak value at 1 270 cm^ - 1 to that at 1 230 cm -^1, the softwood was greater, indicating a difference in constituents of lignin between softwood and hardwood. The infrared spectroscopy of G. biloba was similar to that of the softwood, whereas the ratio of peak value at 1 595 cm^-1 to that at 1 510 cm^-1 and the ratio of peak value at 1 270 cm^ - 1 to that at 1 230 cm ^-1 were more close to those of hardwoods, which shows that the lignin constituent of G. biloba has the evolutional tendency to hardwood.

关 键 词：红外光谱 针叶材 阔叶材 木质素 纤维素 

分 类 号：O657.3[理学—分析化学] S781.8[理学—化学]