阔叶黄檀木材解剖构造及其表面接触角  

Anatomical Structure and Contact Angle of Dalbergia latifolia wood

作　　者：黄广华[1] 陈瑞英[2] HUANG Guanghua;CHEN Ruiying(School of Architectural Engineering,Zhangzhou Institute of Technology,Zhangzhou 363000,China;College of Material Engineering,Fujian Agriculture and Forestry University,Fuzhou 350002,China)

机构地区：[1]漳州职业技术学院建筑工程学院,福建漳州363000 [2]福建农林大学材料工程学院,福州350002

出　　处：《森林工程》2023年第5期85-91,共7页Forest Engineering

基　　金：国家自然科学基金项目(30271057)。

摘　　要：借助生物数码显微镜、连续变倍体视显微镜对阔叶黄檀木材的宏观、显微构造进行观察。测定并分析各类细胞的形态特征,利用静滴接触角测量仪测定表面接触角。结果表明,阔叶黄檀属于散孔材,导管细胞以单管孔及径列复管孔为主,圆柱形导管细胞最多,占导管细胞的50.08%,其长宽比1.17;木纤维中细长纺锤形韧型纤维居多,长宽比38.28;木射线细胞为普通的横卧射线细胞,长宽比5.74;轴向薄壁组织丰富,翼状、聚翼状、断续的窄带状、环管束状,内含有少量分室含晶细胞,细胞长宽比4.43;细胞组织比量最大为木纤维71.10%;最小为分室含晶细胞0.11%,从大到小的顺序为木纤维细胞、木射线细胞、导管细胞、轴向薄壁细胞、结晶细胞。40 s阔叶黄檀表面接触角变化18.02°,下降30.83%。通过阔叶黄檀木材解剖构造及其表面接触角分析可为其鉴定识别和木材利用提供参考依据。The macroscopical and microscopical structures of Dalbergia latifolia wood were observed by means of biological digital microscope and continuous ploidy microscope.The morphological characteristics of various cells were determined and analyzed.The surface contact angle was measured by static drop contact angle measuring instrument.The results showed that D.latifolia wood was a loose pore wood.The main conduit cells were single and diameter multiple conduit holes.The cylindrical conduit cells were the most,accounting for 50.08%of the conduit cells,and the length to width ratio was 1.17.Most of the wood fibers were spindly and tough fibers with a length-width ratio of 38.28.Wood ray cells were common recumbent ray cells with a length-width ratio of 5.74.The axial parenchyma was abundant,pterygoid,clustered pterygoid,intermittent narrow band,ring bundle,containing a few compartmentalized crystalline cells,cell length to width ratio of 4.43.The maximum cell tissue ratio was 71.10%of wood fiber.The minimum was 0.11%of compartmentalized crystalline cell,and the order from large to small was:wood fiber cells,xylem ray cells,vessel cells,axial parenchyma cells and crystal cells.The surface contact angle of D.latifolia in 40 s changed 18.02°,decreased by 30.83%.The analysis of the anatomical structure and surface contact angle of D.latifolia wood can provide reference for its identification and utilization.

关 键 词：阔叶黄檀 木材解剖 宏观构造 微观结构 表面接触角 

分 类 号：S781.1[农业科学—木材科学与技术]