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首页> 外文期刊>Journal of Applied Polymer Science >The electrospun polyamide 6 nanofiber membranes used as high efficiency filter materials: Filtration potential, thermal treatment, and their continuous production
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The electrospun polyamide 6 nanofiber membranes used as high efficiency filter materials: Filtration potential, thermal treatment, and their continuous production

机译：静电纺丝聚酰胺6纳米纤维膜用作高效过滤材料：过滤潜力，热处理及其连续生产

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In this article, polyamide (PA) 6 was dissolved in 98 wt % formic acids with a concentration of 13 wt %, and then the electrospun PA 6 nanofiber membranes were prepared. The filtration potential of the nanofiber membranes were firstly analyzed based on the scanning electron microscope images and pore size measurements, and then the effects of thermal treatment on the dimensional stability were studied. Subsequently, the continuous production process based on the above experiments and the deposition areas of the nanofibers on the collecting meshes was designed. Finally, the mechanical properties and the filtration performances of the electrospun PA 6 nanofiber membranes were assessed. The results showed the membranes with a thickness of 71 μm (electrospinning for 15 min) had good filtration potential for the microparticles with 0.3 μm diameter. After being treated by tension and relaxation heat setting, the membranes demonstrated excellent dimensional stability, the breaking tenacity, and the elongation reached 4.71 ± 1.66 MPa and (69.97 ± 6.56)%, respectively. The permeability decreased with the increase of the membranes thickness. However, the permeability of membranes with (72.9 ± 1.04) μm thickness still maintained 516 L/m2 s, and the actual filtration efficiency of 0.3 μm particles reached 99.98%. The above results showed that the membranes fabricated by the continuous production process could meet the demands of high efficiency filtration and provide a reference for the industrial use of electrospun nanofiber membranes.
机译：在本文中，将聚酰胺（PA）6溶于浓度为13 wt％的98 wt％的甲酸中，然后制备电纺PA 6纳米纤维膜。首先基于扫描电子显微镜图像和孔径测量分析了纳米纤维膜的过滤潜力，然后研究了热处理对尺寸稳定性的影响。随后，基于上述实验和纳米纤维在收集网上的沉积区域，设计了连续生产工艺。最后，评估了电纺PA 6纳米纤维膜的机械性能和过滤性能。结果表明，对于直径为0.3μm的微粒，厚度为71μm（静电纺丝15分钟）的膜具有良好的过滤潜力。经过拉伸和松弛热定形处理后，膜的尺寸稳定性，断裂韧性和伸长率分别达到4.71±1.66 MPa和（69.97±6.56）％。渗透率随膜厚度的增加而降低。但是，厚度为（72.9±1.04）μm的膜的渗透率仍保持516 L / m2 s，0.3μm颗粒的实际过滤效率达到99.98％。以上结果表明，通过连续生产工艺制备的膜可以满足高效过滤的要求，为电纺纳米纤维膜的工业应用提供参考。

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