IMPROVE THE SYNTHESIS OF LIGNO -PHENOLS FROM WOOD BY SOLVENT PRETREATMENTS

摘要：

Lignophenols represents a unique class of modified lignin polymers derived from lignocellulosic substrates by a phase-separation process and have been shown being quite reactive for many industrial applications. A typical synthesis of these polymers generally requires the use of a very fine power of wood substrates and a excess amount of phenols and 72％ sulfuric acid. Our preliminary results indicate that these stringent conditions could be alleviated by a pretreatment of wood meal samples with a lithium chloride-dimethyl sulfoxide solution. With such pretreatments, the lignophenol can be prepared satisfactorily from a coarse wood meal sample (40-60 mesh) and using a lower strength of sulfuric acid (68％). The aspen wood was more responsive to the solvent treatment than the spruce wood.

关键词： lignophenols preparation wood polymers solvent pretreatment

作者: Hao Ren Thomas E. Amidon Yuan-Zong Lai

作者单位: Department of Light Industry and Science, Nanjing Forestry University, NanJing, JiangSu, China Department of Paper science and Engineering, SUNY College of Environmental Science and Forestry, NY

会议类型: 国际会议

会议名称: 16th International Symposium on Wood,Fiber and Pulping Chemistry(第十六届木材、纤维及制浆化学国际会议)

会议地点: 天津

会议语种:英文

页码: 267-269

在线出版日期: 2011-06-08（万方平台首次上网日期，不代表论文的发表时间）