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。
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.
作者
杨昇
陈媛
晏婷婷
李改云
YANG Sheng;CHEN Yuan;YAN Ting-ting;LI Gai-yun(Research Institute of Wood Industry,Chinese Academy of Forestry,Hunan Collaborative Innovation Center for Effective Utilizing of Wood&Bamboo Resources,Beijing 100091,China)
出处
《木材工业》
北大核心
2019年第5期44-48,共5页
China Wood Industry
基金
中央级公益性科研院所基本科研业务费专项资金“桃花心木和辐射松木材性质与加工技术研究”(CAFYBB2017ZC003)
关键词
辐射松
热处理
心材
边材
抽提物
缓冲容量
木质素
Pinus radiata
heat-treatment
heartwood
sapwood
extracts
buffering capacities
lignin
