杨 昇,陈 媛,晏婷婷,李改云.热处理对进口辐射松木材化学性质的影响[J].木材工业,2019,33(5):44-48
热处理对进口辐射松木材化学性质的影响
Effect of Heat-treatments on Chemical Properties of Imported Pinus Radiata Wood
  
DOI:
中文关键词:  辐射松;热处理;心材;边材;抽提物;缓冲容量;木质素
英文关键词:Pinus radiata;heat-treatment;heartwood;sapwood;extracts;buffering capacities;lignin
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作者单位
杨 昇,陈 媛,晏婷婷,李改云 中国林科院木材工业研究所;木竹资源高效利用湖南省高校2011协同创新中心,北京 100091 
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中文摘要:
      热处理引发的木材组分含量及其分子结构的改变,是导致木材材性变化的本质原因,探索不同热处理温度下辐射松木心、边材的化学组分变化。结果表明,热处理后辐射松木材的抽提物含量降低,pH值升高,缓冲容量增加;心边材木质素结构差异较小,随处理温度升高,木质素单元主要连接结构(β-O-4’芳基醚键)断裂程度增加。
英文摘要:
      Imported Pinus radiata wood samples were treated under different temperatures and the chemical compositions of the samples were analyzed. Results showed that the extract contents of the samples decreased while pH value and buffering capacity of the samples all increased. When heating temperatures were elevated, there were no significant changes of lignin structure between heartwood and sapwood of the samples but more broken linkages (β-O-4’ Aryl ether bond) of the lignin structure units were observed.
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