基于红外光谱的木材自身耐久性分析

木材与人类的生活息息相关，在建筑、装饰与装修等方面得到广泛使用。为延长木材的耐久性，选取枣木，榆木，樟子松和云杉，比较其木粉和木质素的红外光谱图，测量碳(C)、氮(N)含量、计算C/N比值，提取木质素含量、木质素密度及萃取物含量和总萃取物密度等，并进行分析比较。结果表明，最耐久的枣木，C/N值最大，木质素密度最大，总萃取物密度最大，从其红外光谱图可以看出，枣木的耐久性最好，木质素的愈创木基（G）/紫丁香基（S）比值最低。

Wood Durability Analysis Based on FTIR Spectra

Wood is closely related to human life,it has been widely used in construction and decoration in order to extend wood durability,timbers of jujube,elm,Pinus sylvestris and spruce were selected as research objects.The infrared spectra of wood powder and lignin were compared.The contents of carbon,nitrogen were measured.The ratio of carbon to nitrogen was calculated.The contents of lignin,lignin density,contents of extractive and density were measured and compared.The results showed that jujube timber was the most durable,which had the highest C/N ratio,lignin concentration and extractive density.Jujube lignin also presented the lowest ratio of guaiacyl/ syringyl from the infrared spectrum.