Changes of Chemical Composition and Crystalline of Compressed Chinese Fir Wood in Heating Fixation

编号 zgly0000339015

文献类型 期刊论文

文献题名 Changes of Chemical Composition and Crystalline of Compressed Chinese Fir Wood in Heating Fixation

学科分类 220.99;林学其他学科

作者 TangXiaoshu  ZhaoGuangjie  NakaoTetsuya 

作者单位 CollegeofMaterialScienceandTechnology  BeijingForestryUniversity  Beijing100083  P.R.China  FacultyofScienceandEngineering  ShimaneUniversity  Matsue  Shimane690-8504  Japan 

母体文献 Forestry Studies in China;中国林学: 英文版 

年卷期 2004,6(4)

页码 39-44

年份 2004 

分类号 S791.14 

关键词 冷杉材  压缩材  化学物质  晶体结构  热压缩处理 

文摘内容 The changes in relative crystalline, chemical composition and internal structure of compressed Chinese fir wood after different heating fixations were found strictly related to fixation conditions. The compressed wood powders were fixed either by heating at different temperatures all resulting in a 10% recovery, or by incubating at 180℃ for different periods with subsequent recovery levels. Both X-ray diffraction and infrared absorption of those samples have been measured. Relative crystalline increases at early stage of heating fixation, and then decreased gradually. Hemicellulose and lignin decomposition were induced by the fixation process, especially at 180℃, and lignin was degraded actively. Furthermore, absorbed water was lost after heating, but cellulose did not change markedly. Although different fixation pathways can result in the same recovery level, the major chemical reactions underlying them vary, which is consistent with the difference of fixation mechanisms。