期刊论文

中文

西北农业学报

1004-1389

2007

16

3

200-203

湖北省科技攻关计划重大项目（2005AA205A02）.

本校为第一机构

主要研究了乙醇水溶液质量分数、液固比（m/m）、反应温度、保温时间等因素对分离板栗壳木质素的影响.优化的工艺条件为板栗壳经粉碎、苯醇（v/v=67/33）浸提、烘干后作为反应原料;在高压釜内,w（乙醇）=60%,液固比（m/m）为10/1,于180 ℃保温1 h;提取液经减压蒸发回收溶剂,浓缩液在80 ℃真空干燥,得到棕褐色的木质素.测定了木质素的溶解性能,并对其进行了红外与紫外光谱分析.还用扫描电镜（SEM）观察了板栗壳纤维表面结构的变化情况.

The mass fraction of ethanol aqueous solution, liquid and solid ratio （m/m）, reaction temperature and time, which influenced the isolation of lignin from chestnut shell, were studied, and the optimal technical conditions were resulted. Chestnut shell was comminuted, before being extracted by benz-alcohol（v/v=67/33）. The dried pretreated shell was treated in autoclave at 180 ℃ for 1 h, when liquid and solid ratio （m/m） was 10/1, and the mass fraction of ethanol 80 %. The extract was vacu um evaporated to recover the solvent. The lignin wa...