To improve the permeability and antifouling properties of polyvinyl chloride (PVC) ultrafiltration (UF) membrane, amphiphilic sulfonated polysulfone (SPSF) was introduced into PVC matrix. Three types of PVC/SPSF blend membranes containing different SPSF with the sulfonation degree (SD) of 20%, 30%, and 50% were fabricated by non-solvent induced phase separation (NIPS) process. The excellent compatibility between PVC and SPSF was confirmed by differential scanning calorimetry (DSC). Surface chemical compositions, morphology, roughness, charge, hydrophilicity, permeability and antifouling properties of the pristine PVC membrane and the PVC/SPSF blend membranes were systematically compared and characterized. Due to the improved hydrophilicity and endowed negative charge, the blend membrane showed high water permeability (i.e. 880 L m⁻²h⁻¹ bar⁻¹), high bovine serum albumin (BSA) rejection (i.e. 95.7%), and high flux recovery ratio (i.e. 96%), which outperformed ever reported and commercialized PVC membranes. Furthermore, the permeability and rejection properties of PVC/SPSF UF membranes were maintained after soaking in acidic and alkaline solutions for 30 days, indicating their outstanding acid and alkali tolerance. Therefore, SPSF was expected as a potential versatile modifier for fabricating high performance UF membranes.

为了提高聚氯乙烯（PVC）超滤（UF）膜的渗透性和防污性能，将两亲性磺化聚砜（SPSF）引入PVC基体中。通过非溶剂诱导相分离（NIPS）工艺制备了三种磺化度（SD）分别为20％，30％和50％的PVC / SPSF共混膜。通过差示扫描量热法（DSC）证实了PVC和SPSF之间的优异相容性。系统地比较和表征了原始PVC膜和PVC / SPSF共混膜的表面化学组成，形貌，粗糙度，电荷，亲水性，渗透性和防污性能。由于改善了亲水性和赋予负电荷，共混膜表现出高透水性（即880 L m^-2 h ^-1 bar ^-1），高牛血清白蛋白（BSA）排斥率（即95.7％）和高通量回收率（即96％），胜过已报道和商业化的PVC膜。此外，在酸性和碱性溶液中浸泡30天后，PVC / SPSF UF膜的渗透性和截留性得以保持，这表明它们具有出色的耐酸碱性能。因此，期望SPSF作为制造高性能超滤膜的潜在多功能改性剂。