Explanation
The basic constituent unit of fiber microstructure, with a diameter generally of 10-30nm. In natural fiber, it refers to larger molecular bundles that are combined by several micro fibrils according to a certain ordered structure. There are larger gaps, pores, and amorphous regions than in the micro. The layered structure of synthetic fiber is relatively simple, which generally refers to the layered structure of parallel and orderly arrangement of fiber macromolecule.
Classification
Organic polymer materials -> Fiber -> Other fibers