[1]宁国艳,王喜明*,沈玉林. 不同状态间胡杨木的化学特性比较研究[J].西北林学院学报,2018,33(2):198-202.[doi:10.3969/j.issn.1001-7461.2018.02.32]
　NING Guo-yan,WANG Xi-ming*,SHEN Yu-lin. Wood Chemical Property of Populus euphratica of Different Status[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2018,33(2):198-202.[doi:10.3969/j.issn.1001-7461.2018.02.32]
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 不同状态间胡杨木的化学特性比较研究()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第33卷
期数:
2018年第2期
页码:
198-202
栏目:
出版日期:
2018-03-31

文章信息/Info

Title:
 Wood Chemical Property of Populus euphratica of Different Status
文章编号:
1001-7461(2018)02-0198-05
作者:
 宁国艳; 王喜明*; 沈玉林
 (内蒙古农业大学 材料科学与艺术设计学院，内蒙古 呼和浩特 010018）
Author(s):
 NING Guo-yan; WANG Xi-ming*; SHEN Yu-lin
 （Collgeg of Material Science and Art Design,Inner Mongolia Agricultural University,Hohhot,Inner Mongolia 010018,China）
关键词:
 ; 胡杨; 红外光谱法; 化学成分; 平衡含水率; 官能团
Keywords:
Populus euphratica;  FTIR;  chemical property;  equilibrium moisture content;  surface functional group
分类号:
S792.11
DOI:
10.3969/j.issn.1001-7461.2018.02.32
文献标志码:
A
摘要:
 为了全面掌握不同状态胡杨木的化学材性，进而为胡杨木的合理利用与科学保护提供可靠的理论参考依据。对内蒙古额济纳旗胡杨保护区的胡杨活立木、伐倒木和枯倒木的化学特性进行了系统的比较分析，并运用红外光谱法表征木材表面官能团。结果表明，胡杨木随着倒地时间的延长，其气干密度、平衡含水率和pH值逐渐降低，灰分、抽出物和木质素的相对含量逐渐升高，而纤维素和综纤维素的含量逐渐减少。额济纳保护区的胡杨木材pH值为8.78，表明胡杨木材是显碱性树种。在红外光谱图中,基团吸收峰的强度降低，说明随着倒地时间的延长，部分化学成分降解，游离态极性分子的数量减少，羟基和羧基的吸收峰强度降低。按制浆造纸原料要求标准来比较，胡杨的纤维素和综纤维素的含量高，抽出物和木质素的含量低，应属优质原料。从组成木材细胞壁的主要化学成分来看，胡杨木与其他杨树差异显著。
Abstract:
 The objectives of this study were to fully understand the chemical properties of Populus euphratica woods that were in different status,and to provide reliable theoretical basis for the reasonable utilization and scientific protection.Wood samples from living tree,felled tree,and naturally fallen dead tree were collected from Ejina Banner in Alashan League of the Inner Mongolia.Chemical properties of the samples were analyzed comparatively.The results showed that along with the increase of the time after the tree trunk was fallen,the air-dry density,quilibrium moisture content and pH gradually decreased,while the content of ash,extractives and lignin gradually increased,and the content of cellulose and ensemble cellulose also decreased.The pH value of living tree in Ejina reserve was 8.78,indicating that P.euphratica is alkaline tree species.FTIR analysis demonstrated that compared with living tree,the absorption intensity of functional groups in fallen tree decreased with time,indicating that some chemical compositions degraded,the number of free polar molecules decreased,and the strength of the hydroxyl and carboxyl gradually reduced.According to the requirements of pulping and papermaking raw material standard,the content of cellulose and ensemble cellulose were high,the content of extractives and lignin were low,the woods of P.euphratica should belong to high quality raw material for paper making.On the basis of the main chemical composition from which the cell walls of the woods were composed of,there existed significant differences between P.euphratica and other poplar species.

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备注/Memo

备注/Memo:
 收稿日期：2017-04-24修回日期：2017-06-25
作者简介：宁国艳，女，在读硕士，研究方向：木材改性。E-mail:18004860124@163.com
*通信作者：王喜明，男，教授，博士生导师，研究方向：木材科学。E-mail:w_ximing@263.net
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