In this paper, anti-fouling poly (phenyl sulfone) ultrafiltration membranes were fabricated through the NIPS (V-0) and VIPS-NIPS (V-15 through V-60) technique. The effect of VIPS conditions on the structure and performance of the membranes has been investigated. Scanning electron microscopy (SEM) and liquid–liquid displacement porosimetry (LLDP) methods were used for membrane characterization. Pure water flux and BSA retention were also used for evaluation of separation performance of the fabricated membranes. The results revealed that by increasing VIPS time, pore size and permeate flux of the membranes were both increased except for V-30 membrane where both the pore size and PWF were decreased. BSA retention has an opposite behavior. By increasing VIPS time from 0 to 15 s, the PWF increased from 17.12 to 20.79 L/m².h. At a VIPS time of 30 s, PWF reduced to 15.60 L/m².h, and by further increase of VIPS time to 60 s, the flux increased to 37.69 L/m².h. BSA retention showed a closer dependency to pore size of the membranes i.e. it decreased from 71.32% to 55.68% by increasing VIPS time from 0 to 15 s, then increased to 63.27% for V-30 membrane, and finally decreased to 52.69% at a VIPS of 60 s. It is noteworthy that the increase of VIPS time from 0 to 15 s leads to an increase in mean pore radius from 0.96 to 1.44 nm and then a decreases to 1.04 nm for a VIPS time of 30 s and finally to 1.39 nm with an increase of VIPS time to 60 s.

本文通过NIPS（V-0）和VIPS-NIPS（V-15至V-60）技术制备了防污聚苯砜超滤膜。研究了VIPS条件对膜结构和性能的影响。扫描电子显微镜（SEM）和液-液位移孔隙率法（LLDP）用于膜表征。纯净水通量和BSA保留量也用于评估制成膜的分离性能。结果表明，通过增加VIPS时间，膜的孔径和渗透通量均增加，但V-30膜的孔径和PWF均减小。BSA保留具有相反的行为。通过将VIPS时间从0增加到15 s，PWF从17.12 L / m ²增加到20.79 L / m ²。H。在VIPS时间为30 s时，PWF降低到15.60 L / m ² .h，而通过VIPS时间进一步增加到60 s，通量增加到37.69 L / m ² .h。BSA保留时间显示出对膜孔径的依赖性，即通过增加VIPS时间（从0到15 s），膜的孔径从71.32％降低到55.68％，然后V-30膜的吸附率增加到63.27％，最后在30℃降低到52.69％ 60秒的VIPS。值得注意的是，VIPS时间从0到15 s的增加导致平均孔半径从0.96 nm增加到1.44 nm，然后在30 s的VIPS时间减小到1.04 nm，最后随着1.30 nm的增加而降低到1.39 nm。 VIPS时间为60 s。