摘要
以黄杨木为研究对象,采用高温水热处理工艺(温度分别为140、160、180℃,水热处理时间为4 h)对黄杨木进行改性,用色度仪、傅里叶红外光谱仪与X射线衍射仪分别对黄杨木材色及内部化学成分进行测定与表征,分析不同温度对黄杨木材色和化学成分的影响,阐明了水热处理在黄杨木改性方面的优势。分析表明:随着处理温度的增加,黄杨木表面颜色逐渐加深,180℃水热处理能增加黄杨木材色的均匀性;当温度为160℃时,位于1732 cm^(-1)处的乙酰基和1370 cm^(-1)处的甲烷基团消失,黄杨木中半纤维素最先发生降解;但当温度达到180℃时,在1057 cm^(-1)处生成新的表征紫丁香基的特征峰;纤维结晶度随温度的升高呈先增加后降低的趋势,室温、140、160、180℃处理条件下的结晶度分别为45.59%、61.75%、62.80%、30.20%。
In this study,boxwood was modified under high temperature hydrothermal conditions(temperature140,160,180℃,hydrothermal treatment time 4 h).Color and internal chemical composition of boxwood were determined and characterized by colorimeter,Fourier transform infrared spectrometer(FT-IR)and X-ray diffrotometer,respectively.The effects of different temperatures on the color and chemical composition of boxwood wood were analyzed,and the advantages of hydrothermal treatment in the modification of boxwood wood were clarified.The results showed that the surface color of boxwood gradually deepened with the increase of treatment temperature,and hydrothermal treatment at 180℃could increase the color uniformity of boxwood.When the temperature was 160℃,the acetyl group at 1732 cm^(-1) and the methane group at 1370 cm^(-1) disappeared,and the hemicellulose was degraded first in the boxwood,however,when the temperature reached 180℃,a new characteristic peak generated at 1057 cm^(-1).The crystallinity of fiber increased first and then decreased with the increase of temperature.The crystallinity of fiber at room temperature,140,160,and 180℃were 45.59%,61.75%,62.80%,and 30.20%,respectively.
作者
李红晨
杨洋
霍鸿飞
何盛
张仲凤
LI Hong-chen;YANG Yang;HUO Hong-fei;HE Sheng;ZHANG Zhong-feng(Central South University of Forestry and Technology,National Forestry and Grassland Administration Green Furniture Engineering Technology Research Center,Green Home Engineering Technology Research Center in Hunan,Changsha 410004,Hunan,P.R.China;China National Bamboo Research Center,Hangzhou 310012,Zhejiang,P.R.China;Hebei Muhuai Smart Home Co.,LTD.,Handan 056000,Hebei,P.R.China)
出处
《林产工业》
北大核心
2022年第4期14-19,共6页
China Forest Products Industry
基金
国家自然科学基金(318726697)
湖南省科技人才托举工程中青年培养计划(2020 TJ-Q18)
2021年省科技创新领军人才(2021RC4033)
生态建筑环境材料研发与应用创新团队
湖南省研究生科技创新项目资助(CX20210904)。
关键词
黄杨木
水热处理
色差
化学成分
结晶度
Boxwood
Hydrothermal treatment
Chromatic aberration change
Chemical composition
Crystallinity
作者简介
李红晨,女,研究方向为家具设计与工程,E-mail:1871388213@qq.com;通讯作者:张仲凤,女,博士,教授,研究方向为家具设计与工程,E-mail:csfuzzf(@163.cm。
