Owing to the excellent filtration performance and low energy cost, polymeric nanofibers microfiltration (MF) membranes have attracted increasing attentions. Poly(arylene sulfide sulfone) (PASS), as one of the structurally modified polymers based on poly-(phenylene sulfide) (PPS), has been selected as the raw material to fabricate nanofibers MF membranes via electrospun techniques. The effects of PASS solution and the electrospinning processing parameters on the structural morphology of nanofibers were investigated in detail. The average diameter of PASS nanofibers was (296 ± 46) nm under the optimal condition: polymer concentration of 0.27 g·mL⁻¹ PASS/DMI, applied voltage of 20 kV, and speed of collector drum of 300 r·min⁻¹. And then the multi-layer PASS nanofibers MF membranes were fabricated from cold-pressing the optimized PASS nanofibers (as-prepared PASS nanofibers) membrane. The morphology, porosity, pore size, mechanical properties, and surface wettability of the multi-layer PASS nanofibers MF membranes could be tuned by the layers of as-prepared nanofibers membrane. The results demonstrated that the membrane with 6 layers (marked as PASS-6) exhibited the smallest porosity, smallest pore size, highest mechanical property, and best surface wettability. Meanwhile, the multi-layer PASS nanofibers MF membranes showed that the rejection ratio gradually increased, while the pure water flux decreased with increasing membranes thickness. The PASS-6 membrane exhibited large water flux of 747.76 L·m⁻²·h⁻¹ and high separation efficiency of 99.9% to 0.2 µm particles, making it a promising candidate for microfilter.

由于出色的过滤性能和较低的能源成本，聚合物纳米纤维微滤（MF）膜已引起越来越多的关注。作为基于聚苯硫醚（PPS）的结构改性聚合物之一，聚亚芳基硫醚砜（PASS）已被选为通过静电纺丝技术制造纳米纤维MF膜的原料。详细研究了PASS溶液和静电纺丝工艺参数对纳米纤维结构形态的影响。在最佳条件下，PASS纳米纤维的平均直径为（296±46）nm：聚合物浓度为0.27 g·mL ^-1 PASS / DMI，施加的电压为20 kV，收集鼓的速度为300 r·min ^-1。然后通过冷压优化的PASS纳米纤维（制备的PASS纳米纤维）膜来制造多层PASS纳米纤维MF膜。多层PASS纳米纤维MF膜的形态，孔隙率，孔径，机械性能和表面润湿性可通过制备的纳米纤维膜的层进行调整。结果表明，具有6层膜（标记为PASS-6）的膜表现出最小的孔隙率，最小的孔径，最高的机械性能和最佳的表面润湿性。同时，多层PASS纳米纤维MF膜的截留率逐渐增加，而纯水通量随膜厚度的增加而降低。PASS-6膜的水通量大，达747.76 L·m ^-2 ·h ^-1 且99.9％到0.2 µm颗粒的高分离效率使其成为微过滤器的有希望的候选者。