科研之友
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摘要
This paper is focused on investigating the microstructure of kapok fiber through the observation of residual deformation and fracture morphology of kapok fibers in longitudinal microscopic images. By comparing the morphology of kapok fibers before and after different treatments, unique weak spiral lines inside the cell wall were found. The spiral lines that divide the cell wall into a wound ribbon appear to be the weak locations (e.g., the fracture or bending points) of the fiber. The damage mechanism of kapok fibers in assemblies was summarized. Details of structures inside the ribbon were also examined to reveal that macro-fibrils of 0.2 mu m in diameter and > 1.0 mm in length were packed neatly along the fiber axial on the surface. A framework of the multi-assembly structure of kapok fiber was summarized.
