【摘要】 用红外光谱仪(FTIR)、核磁共振波谱仪(1 H-NMR)分析研究了超临界CO2提取靑竹木质素的结构特征,并与云杉、山毛榉、慈竹、毛竹木质素结构进行了对比。结果表明:靑竹木质素主要由愈创木基、紫丁香基芳香环结构组成,也含有对羟苯基结构单元,且含有丰富的羟基、甲氧基等活性官能团,符合禾本植物木质素的结构特征;主要化学键型为β—O—4键,也含有β—5键和β—1键,未检出β—β结构的键联形式。更多还原

【Abstract】 The chemical structures of Bamboo lignin prepared by supercritical carbon dioxide were researched by FTIR and 1 H-NMR spectroscopy,and were compared with Spruce,Beech,Neosinocalamus affinis and Phyllostachys pubescens.The results indicate that Bamboo lignin is largely composed of guaiacyl(G),syringyl(S),phydroxyphenyl units and rich active functional groups,such as hydroxyl and methoxyl group.The main types of linkages in Bamboo lignin areβ-O-4,β-5andβ-1linkages.Theβ-βlinkage is not detected更多还原