Nano-micron size fiber formation of UHMWPE (ultra-high molecular weight polyethylene) can be carried out by a high temperature (130 °C) electrospinning method. In this work, the effect of solution parameters on fiber formation by the electrospinning method is discussed. Two different grades of UHMWPE having a molecular weight (M_w) of 2.21 million g/mole (UM2.21) and 4.43 million g/mole (UM4.43) were chosen for the analysis. The solution properties of UHMWPE were investigated via rheology, which allowed the identification of the entanglement concentration before conducting the electrospinning process. The entanglement concentration (c_e) for UM2.21 was 1.5 wt.%, while that for UM4.43 was 0.8 wt.%, respectively. The concentration exponent in semi dilute unentangled, and semi dilute entangled regimes was 1.23 and 2.59 for UM2.21 and 0.45 and 2.57 for UM4.43, respectively, in-line with de-Gennes’s scaling theory. SEM of the electrospun product revealed that defect-free smooth fiber morphology could only be obtained when the concentration of the solution is around 1.5–2.5 times the entanglement concentration.

UHMWPE（超高分子量聚乙烯）的纳米微米尺寸纤维形成可以通过高温（130°C）静电纺丝方法进行。在这项工作中，通过静电纺丝方法讨论了溶液参数对纤维形成的影响。选择分子量 (M _w ) 为 221 万克/摩尔 (UM2.21) 和 443 万克/摩尔 (UM4.43) 的两种不同等级的 UHMWPE进行分析。UHMWPE 的溶液特性通过流变学进行研究，这允许在进行静电纺丝过程之前识别缠结浓度。纠缠浓度 ( _ce) 的 UM2.21 为 1.5 wt.%，而 UM4.43 的分别为 0.8 wt.%。UM2.21 的半稀非缠结和半稀缠结状态的浓度指数分别为 1.23 和 2.59，UM4.43 的浓度指数分别为 0.45 和 2.57，与 de-Gennes 的标度理论一致。电纺产品的 SEM 表明，只有当溶液浓度约为缠结浓度的 1.5-2.5 倍时，才能获得无缺陷的光滑纤维形态。