小兴安岭4树种健康材和腐朽材结晶度的试验  

Crystallinity of Healthy and Rotten Wood of Several Tree Species in Xiaoxing'an Mountain

作　　者：张新玲[1] 王立海[1] 高珊[1] 

机构地区：[1]黑龙江省森林持续经营与环境微生物工程重点实验室(东北林业大学),哈尔滨150040

出　　处：《东北林业大学学报》2010年第7期83-84,125,共3页Journal of Northeast Forestry University

基　　金：国家自然科学基金项目(30671643);"十一五"科技支撑计划项目(2006BAD18B07)

摘　　要：为了对进一步研究纤维的超分子结构及木材的宏观特性提供基础数据,利用X射线衍射法分别测量了白桦(Betula platyphylla)、云杉(Picea koraiensis)、落叶松(Larix gmelinii)和杨树(Poplar)健康材和腐朽材的结晶度。对X射线衍射仪测量的结果进行计算得出:白桦健康和腐朽边材的结晶度分别是43.36%和31.60%;云杉健康和腐朽边材的结晶度分别是41.90%和29.04%;落叶松健康和腐朽边材的结晶度分别是53.59%和40.20%;杨树健康和腐朽边材的结晶度分别是70.26%和48.29%。结果表明,同一树种,腐朽材与健康材相比,结晶构造没有发生变化,但结晶度下降,说明腐朽破坏了纤维结晶区的结晶程度。An experiment was conducted to measure the crystallinity of the healthy and rotten wood of Betula platyphylla,Picea koraiensis,Larix gmelinii,and Populus spp. through X-ray diffraction,aimed to provide basic data for the further study of molecular structure and macroscopic features of wood. Result showed that the crystallinities of healthy wood of B. platyphylla,P. koraiensis,L. gmelinii,and Populus spp. were 43.36%,41.90%,53.59% and 70.26% respectively; and those of rotten B. platyphylla wood,P. koraiensis wood,L. gmelinii wood,and Populus spp. wood were 31.60%,29.04%,40.20% and 48.29%,respectively. For the same species,the crystal structure of the rotten wood did not change compared with that of the healthy wood,but the crystallinity decreased,indicating that the crystallinity of cellulose fibers is destroyed during the decay process.

关 键 词：结晶度 木材腐朽 纤维素 X射线 

分 类 号：S781.52[农业科学—木材科学与技术]