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<p>In this study, the Electro-assisted Solution Blow Spinning (E-SBS) process was optimized by the response surface method (RSM), and the diameter and pore size regulation mechanisms of PVDF and PA66 nanofiber membranes were systematically explored. Through single-factor experiments and RSM analysis, the influences of four process parameters - solution concentration, air pressure, voltage and solution push speed - on fiber diameter and uniformity were clarified, and an effective model was established. Experimental verification shows that the fiber diameter can be controlled between 0.06 and 0.16&#xa0;μm in PVDF membranes and between 0.25 and 0.41&#xa0;μm in PA66 membranes. Then, by controlling the diameters of PVDF and PA66 fibers and the weight of the fiber membranes, we explored the regulation of the pore size of the fiber membranes. The influence of three factors on the pore size of fiber membranes was studied by RSM, and the corresponding models were established. Experimental verification shows that the pore size of the fiber membrane can be adjusted within the range of 7.2 to 16.7&#xa0;μm. Subsequently, the influence of different pore sizes on the filtration performance of fiber membranes was also discussed. It was found that when the pore size was 12&#xa0;μm, the quality factor was the largest, reaching 0.06&#xa0;Pa⁻¹, demonstrating excellent filtration performance. This study provides a theoretical basis for the optimization of the E-SBS process and offers new ideas for the design and application of nanofiber membranes.</p>

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Preparation and properties of PVDF/PA66 nanofiber air filtration membrane with controllable pore size by electro-assisted solution blow spinning

  • 期刊论文

  • 发表日期：

    2026年2月14日

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  • Yafang Li,
  • Beining Ma,
  • Yinong Sun,
  • Mengchen Yan,
  • Zongjie Li,
  • Yixia Zhao

摘要

In this study, the Electro-assisted Solution Blow Spinning (E-SBS) process was optimized by the response surface method (RSM), and the diameter and pore size regulation mechanisms of PVDF and PA66 nanofiber membranes were systematically explored. Through single-factor experiments and RSM analysis, the influences of four process parameters - solution concentration, air pressure, voltage and solution push speed - on fiber diameter and uniformity were clarified, and an effective model was established. Experimental verification shows that the fiber diameter can be controlled between 0.06 and 0.16 μm in PVDF membranes and between 0.25 and 0.41 μm in PA66 membranes. Then, by controlling the diameters of PVDF and PA66 fibers and the weight of the fiber membranes, we explored the regulation of the pore size of the fiber membranes. The influence of three factors on the pore size of fiber membranes was studied by RSM, and the corresponding models were established. Experimental verification shows that the pore size of the fiber membrane can be adjusted within the range of 7.2 to 16.7 μm. Subsequently, the influence of different pore sizes on the filtration performance of fiber membranes was also discussed. It was found that when the pore size was 12 μm, the quality factor was the largest, reaching 0.06 Pa⁻¹, demonstrating excellent filtration performance. This study provides a theoretical basis for the optimization of the E-SBS process and offers new ideas for the design and application of nanofiber membranes.