文献类型：期刊文献

中文题名：湿热-压缩处理木材的纤维素晶体结构变化

英文题名：Cellulose Crystalline Structure Changes of the Wood Treated by Compression Combined with Steam

作者：尹江苹[1] 郭娟[1] 赵广杰[2] 殷亚方[1]

第一作者：尹江苹

机构：[1]中国林业科学研究院木材工业研究所;[2]College of Materials Science and Technology,Beijing Forestry University

年份：2017

卷号：44

期号：7

起止页码：10-14

中文期刊名：林产工业

外文期刊名：China Forest Products Industry

收录：CSTPCD;;北大核心:【北大核心2014】；

基金：国家自然科学基金项目(31370559)

语种：中文

中文关键词：杉木;湿热-压缩处理;纤维素;晶体结构

外文关键词：Chinese fir; Compression combined with steam treatment; Cellulose; Crystalline structure

分类号：S781.7

摘要：分别采用不同径向压缩率(25%和50%)并结合不同蒸汽处理温度(140、160℃和180℃)对人工林杉木(Cunninghamia lanceolata)进行湿热-压缩处理,然后利用X-射线衍射法(XRD)研究了湿热-压缩处理对木材纤维素微纤丝角、结晶度及微晶宽的影响规律。结果表明:湿热-压缩处理木材纤维素微纤丝角无明显变化,结晶度和微晶宽均增大。结晶度增幅介于28%~38%,不同压缩率和蒸汽处理温度对纤维素结晶度影响无显著差异。随着蒸汽处理温度的增加,微晶宽逐渐增大,在180℃蒸汽处理条件下达到最大值。
Compression combined with steam treatment to Chinese fir （Cunninghamia lanceolata） was carried out with different radial compression （compression ratio of 25% and 50%） in combination with different steam treatment temperatures （140, 160℃ and 180℃）. The variation of cellulose microfibril angle, crystallinity and crystallite width were characterized by X-ray diffraction（XRD）. The results indicated that cellulose microfibril angle had no significant changes, however crystallinity and crystallite width were increased after CS-treatment. About 28%-38% increase of crystallinity was observed. Different compression ratios and steam treatment temperatures did not affect cellulose crystallinity significantly. With the increase of compression ratios, crystallite thickness increased gradually, the maximum value could be obtained when at 180℃.