【摘要】 采用有机溶剂法对甲酸预处理蔗渣后的蔗渣木质素进行纯化并进行结构表征。纯化后木质素的纯度为92.1%,收率为76.1%。红外图谱分析、热重和核磁共振氢谱分析表明,提纯前后木质素均含有愈创木基和紫丁香基两种结构,其中紫丁香基单元为主要单元。扫描电镜分析表明,纯化后的木质素由1~5μm的球体颗粒组成,表面结构松散,颗粒产生粘连现象,有利于其在水凝胶、高分子树脂等方面的应用。更多还原

【Abstract】 Using formic acid pretreatment method of organic solvent,purify this bagasse and based on the characterization.The purity of purified lignin was 92.1%,the yield was 76.1%.Infrared spectrum analysis,thermo gravimetric and nuclear magnetic resonance hydrogen spectrum analysis showed that before and after purification of lignin contained guaiac wood and lilacs based two structures,the lilacs is the main unit.Scanning electron microscopy(SEM) analysis showed that the purified lignin consists of 1~5 μm sphere particles,the surface structure is loose,grain adhesion phenomenon,promotes in the hydrogel,application of high polymer resin,etc.更多还原