山地杨边材和心材差异性分析  

Analysis of the Difference of Aspen between Sapwood and Heartwood

作　　者：李琳[1] 代洋洋 王永贵[1] 岳金权[1] 

机构地区：[1]东北林业大学生物质材料科学与技术教育部重点实验室,黑龙江哈尔滨150040

出　　处：《造纸科学与技术》2014年第1期19-25,共7页Paper Science & Technology

摘　　要：分析了山地杨原料边材和心材的物理性能、纤维形态、化学组成、解剖结构等方面的差异性,探讨了这些差异性对其制浆造纸性能及流体传输性能的影响。结果表明:原料边材具有孔隙度大、纤维较长、长宽比大、壁腔比小、抽出物含量少、木素含量低、综纤维素含量高、毛细管通道清洁、沉积物少等特点,其制浆造纸性能明显优于心材。同时,研究表明边材的流体传输性能明显优于心材。The differences between sapwood and heartwood of aspen, namely physical property, fiber morphology, chemical composition and anatomical structure were analyzed. Meantime, the effects of these differences on the process of pulping and papermaking and the the fluid transmission characteristics were also investigated. The results showed that, comparing with the heartwood, the sapwood had better properties of pulping and papermaking, such as higher prosity, longer fiber, bigger length - width ratio, lesser ratio of cell wall to lumen, lower extractives con- tent, lower lignin content, higher holocellulose content and less deposit. Besides, the results showed that the fluid transmission performance of sapwood was better than that of heartwood.

关 键 词：山地杨 物理性能 纤维形态 化学组成 解剖结构 流体传输 

分 类 号：TS721.1[轻工技术与工程—制浆造纸工程]