...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>IAWA Journal >Cell wall changes under compression combined with steam treatment in relation to wood hygroscopicity
【24h】

Cell wall changes under compression combined with steam treatment in relation to wood hygroscopicity

机译：压缩下的细胞壁变化结合蒸汽处理与木湿润程度相关

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Compression combined with steam (CS) treatment is postulated to be an environmentally friendly and efficient modification method to improve the dimensional stability, durability, and mechanical strength of wood. The influences of CS treatment with different radial compression ratios (RCRs) (25% and 50%) and different steam temperatures (140, 160 and 180 degrees C) on chemical components, porosity, and hygroscopicity of earlywood and latewood in Chinese fir (Cunninghamia lanceolata (Lamb.) Hook.) were investigated respectively on a cellular level by imaging Fourier Transform Infrared (FT-IR) microscopy, Confocal Raman Microscopy (CRM), nitrogen adsorption and dynamic vapor sorption (DVS). The results indicated that the degradation of carbonyl groups of the glucuronic acid component of xylan in earlywood and latewood was mainly responsible for the low hygroscopicity of CS-treated wood. Also, a significant decrease in the amount of C=O and C=C linked to the lignin aromatic skeleton involved in either crosslinking reactions or the degradation reactions could be another contributor to the reduction in wood hygroscopicity. CS-treated wood with a steam temperature of 180 degrees C possessed a lower hygroscopicity that correlated well with the depolymerization of crystalline and amorphous cellulose. A more deformed structure of CS-treated wood led to the formation of greater amounts of mesopores in the cell walls, which could lead to increased degradation of the chemical components of wood cell walls. Furthermore, a higher equilibrium moisture content (EMC) level was found for CS-treated wood with a 50% compression ratio compared to a 25% compression ratio.
机译：None

著录项

  • 来源
    《IAWA Journal》 |2021年第2期|共14页
  • 作者

    Yin Jiangping; Guo Juan; Lyu Jianxiong; Yin Yafang;

  • 作者单位

    Chinese Acad Forestry Hunan Collaborat Innovat Ctr Effect Utilizing Woo Res Inst Wood Ind Beijing 100091 Peoples R China;

    Chinese Acad Forestry Hunan Collaborat Innovat Ctr Effect Utilizing Woo Res Inst Wood Ind Beijing 100091 Peoples R China;

    Chinese Acad Forestry Hunan Collaborat Innovat Ctr Effect Utilizing Woo Res Inst Wood Ind Beijing 100091 Peoples R China;

    Chinese Acad Forestry Hunan Collaborat Innovat Ctr Effect Utilizing Woo Res Inst Wood Ind Beijing 100091 Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 林业;
  • 关键词

    Compression combined with steam (CS) treatment; wood cell wall; chemical components; porosity; hygroscopicity;

    机译：压缩与蒸汽（CS）处理结合;木细胞壁;化学成分;孔隙度;吸湿性;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号