The rapid growth of polymer technology has provided viable and more straightforward methods for the development of ultra-high molecular weight polyethylene (UHMWPE) fibers. The gel spinning process yields fibers with improved properties and less impact on the environment. The material used as a solvent for the swelling of the polymer reveals an excellent potential for the processing of new fibers. In the present work, the influence of a new spinning solvent based on polyalphaolefin (PAO100) in the UHMWPE was evaluated. All fibers were obtained by extrusion in concentrations of 0.04 to 60% m/m of PAO100 oil, with screw rotation speed increasing from 20 to 60 rpm, leaving the extruder nozzle of 1.82 mm. Besides, n-hexane was used in the process of extracting oil from UHMWPE fibers. The fibers did not undergo to the drawing process. The results show that the fibers containing 20–40% m/m of PAO100 presented higher linear density, indicating the orientation of the crystals in a compact morphology and the higher relaxation after leaving the nozzle, increasing die-swell. After extraction of PAO100 with n-hexane, huge voids were observed in SEM images, which indicates the alignment of subfibers inside the fiber. The average size of the crystallite related to the polyethylene orthorhombic crystal increased significantly, showing that the number of entanglements decreased. The results indicate that PAO100 oil acts as a lubricant, increasing the mobility of the chains, leading to higher crystallization. The present study presents exciting findings on the effects of PAO100 oil on the morphology, crystalline structures, and thermal properties of UHMWPE fibers, pointing out the oil concentration necessary for the formation of fibers with higher crystallinity and thermal resistance.

聚合物技术的迅速发展为开发超高分子量聚乙烯（UHMWPE）纤维提供了可行且更直接的方法。凝胶纺丝工艺生产的纤维具有改进的性能，并且对环境的影响较小。用作聚合物溶胀溶剂的材料显示出加工新纤维的极好的潜力。在目前的工作中，评估了UHMWPE中基于聚α-烯烃的新型纺丝溶剂（PAO100）的影响。所有纤维均通过以0.04％至60％m / m的PAO100油浓度进行挤出而获得，螺杆转速从20 rpm增加至60 rpm，挤出机喷嘴为1.82 mm。此外，正己烷用于从超高分子量聚乙烯纤维中提取油的过程中。纤维未经历拉伸过程。结果表明，含有20–40％m / m的PAO100的纤维表现出更高的线密度，表明晶体以紧凑的形态取向，并且离开喷嘴后的松弛度更高，从而增加了模头膨胀。用正己烷萃取PAO100后，在SEM图像中观察到巨大的空隙，这表明亚纤维在纤维内部的排列。与聚乙烯斜方晶体有关的微晶的平均尺寸显着增加，表明缠结数减少。结果表明，PAO100油充当润滑剂，增加了链的迁移率，导致更高的结晶度。本研究提供了有关PAO100油对UHMWPE纤维的形态，晶体结构和热性能的影响的令人兴奋的发现，