Study on the Evolution Process of Fiber Morphology and Structure in the Growth Process of Dendrocalamus Membranaceus Munro
In this study,the morphology,structure evolution and physical properties of Dendrocalamus Membranaceus Munro fibers during the growth process were studied by field emission scanning electron microscopy and two-dimensional wide-angle X-ray diffractometer.The re-sults showed that when the bamboo age was same,the differentiation and development of the base of bamboo shoots was earlier than that of the upper part.With the increase of bamboo age,the cell wall thickess increased obviously in the first 10 months,and the wall cavity ratio was 0.10 and 4.03 at bamboo age of 3 and 36 months.As the cell wall thickess gradually increased,the fiber became stiff from soft and easy to bend.Observing by field emission scanning electron microscopy,the fiber gradually changed from a flat shape to a multi-prism or an approximate cylinder;the average fiber length and the average width of bamboo fiber increased.At the same bamboo age,the microfibril an-gle of the fiber gradually increased from the part near the green skin to the part near the inner wall of the bamboo ring,and fluctuated with the increase of the radial height.In the microfibril angle range of 9°～14°,the fiber orientation was good.
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