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The Chemical Composition And Fiber Morphology Analysis Of Ramulus Mori, Eucommia Ulmoides And Tamarix Ramosissima

Posted on:2016-10-03Degree:MasterType:Thesis
Country:ChinaCandidate:Y X LiFull Text:PDF
GTID:2283330461464946Subject:Wood science and technology
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Scimber products have excellent performance, which have beautiful pattern and good physical and mechanical properties as well as natural wood. To study the chemical components and fiber morphology of wood, providing theoretical guidance for the processing of recombinant material and improving the guide plate performance. This paper mainly analyzed the material chemical composition, fiber morphology and basic density of wood from Ramulus Mori, Eucommia Ulmoides and Tamarix Ramosissima. Compared with the cotton stalk material and scimber. The main conclusions are as follows:(1)Determination results of chemical component of wood from Ramulus Mori, Eucommia Ulmoides and Tamarix Ramosissima are that: gellulose were 41.49%, 37.17% and 38.63%, holocellulose were 68.72%, 70.26% and 68.59%, ligin were 20.68%, 21.65% and 20.34%, hot water extractives were 7.11%, 7.54% and 12.19%, 1%NaoH extractive were 24.48%, 23.36% and 26.81%, alcohol benzene extractive were 6.16%, 4.50% and 9.01%, ash 0.55%, 0.54% and 1.94%.Among the three kinds of wood, Eucommia Ulmoides has the highest content of cellulose, and lignin content is the lowest; Ramulus Mori has the highest content of gellulose. The content of Holocellulose and Ligin have little difference in Tamarix Ramosissima and Ramulus Mori. The lignin content is farly lower than wood and cotton stalk scrimber, which shows that Ramulus Mori, Eucommia Ulmoides and Tamarix Ramosissima belong to high quality raw materials for the production of scimber, Eucommia Ulmoides are better than others.(2)The average length of Eucommia Ulmoides, Ramulus Mori and Tamarix Ramosissima is respectively 0.88 mm, 0.76 mm and 0.63 mm. The average fiber width of Eucommia Ulmoides, Ramulus Mori and Tamarix Ramosissima were 17.69μm, 17.16μm m and 17.16μm, The average fiber aspect ratio are respectively 44.57, 50.48 and 41.64. The Wall cavity ratio of three woods are respectively Eucommia Ulmoides(0.51), Ramulus Mori(1.41) and Tamarix Ramosissima(0.96). The fiber length of Eucommia Ulmoides, Ramulus Mori and Tamarix Ramosissima were mainly concentrated in the 600 ~ 900 microns, 700 ~ 1000 microns, and between 500 ~ 800 microns, accounted for 71.33%, 79% and 87% of its total amount. The average fibre content of the three woods is respectively 66.23%, 65.01% and 66.82%. the average fibre content of them are higher than others. The basic average density of Eucommia Ulmoides, Ramulus Mori and Tamarix Ramosissima are respectively 0.46 g/cm3 and 0.49 g/cm3 and 0.72 g/cm3. The Results show that the three branch materials are suitable for the reorganization of wood raw material. Among of them, the average fiber length of Ramulus Mori is the largest material, the average fiber length-width is lower, the fiber is longer, the largest proportion of the fiber content is higher. Ramulus Mori wood is the best wood in three branch material restructuring of wood raw materials.Compared with other materials in the reorganization of the wood, three branch material fiber length and width are the medium categories, the wall cavity is much lower than bamboo; and the fiber length distribution range of fiber length is similar to the cotton, Wood proportion of long fibers of Ramulus Mori is larger than other materials. Wood fiber content of three branches are higher, and the basic density of three branches are much larger than cotton and fast-growing Chinese fir, and three kinds of brush wood branches straight, relief, the shop installs easily. The results show that compared with the restructuring wood raw materials, the other three branch material is a better fiber raw materials of producing restructuring wood.Comprehensive analysis showed: Compared to other common raw materials of scimber, this three kinds of wood have higher content of Holocellulose, gellulose and fiber, lower content of lignin, At the same time, the three kinds of brush wood have straight branches, easy to relief, shopping. So the three branch material is high quality materials of scimber. In three materials, Eucommia Ulmoides have the best performance, the bottom and the middle of three kinds of wood have a better performance than the top. So the bottom and middle of Eucommia Ulmoides have a better performance to produce scimber.
Keywords/Search Tags:Ramulus Mori, Eucommia Ulmoides, Tamarix Ramosissi, chemical component, Tissue rough measurements
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