The influence of the multi-level structure under high drawing on the preparation of high strength Lyocell fiber

In order to research the multi-level structure of Lyocell fiber at different draw ratios and reveal limiting factors for preparing high strength fiber, paper reports on effect ratio including low drawing (1–5), (6–11) excessive (12–20) mechanical properties fiber. The was determined by wide-angle X-ray diffraction, small-angle scattering fibrillation test, result showed that, stage, breaking strength, yield modulus increased with owing crystallinity as well orientation while micropore decreased, there were almost no microfibrils surface. At amorphous region increasing principal reason increase properties, micropores continued decrease a few short thick microfibril formed. remained constant mainly due basically unchanged fibers, decreased slip highly crystallized oriented elementary fibril. Meanwhile, still became more slender, number tenuous structure. It can be summarized that has characteristics structure, fundamental improvement is