To enhance the anti-fouling performance of polysulfone (PSF) membranes, polyaniline (PANI) nanofibers were used as additives in a facile method to prepare PANI/PSF blended membranes (PPMs). The fouling behavior between the membrane and natural organic matters (NOM) pollutant was further analyzed by implementing extended Derjaguin–Landau–Verwey–Overbeek (XDLVO) theory. Overall, the performance of the PPMs was improved in comparison with that of the pristine PSF membrane. The pure water flux of the PPM increased to 2.4 times that of pristine PSF, reaching up to 169 L·m⁻² h⁻¹ bar⁻¹. The tensile strength of the hybrid membranes also increased after the incorporation of PANI nanofibers. In particular, in anti-fouling measurement, the PPMs exhibited enhanced anti-fouling properties for filtration serum albumin (BSA), humic acid (HA) and sodium alginate (SA) solutions. The anti-fouling mechanism was analyzed by the interfacial interaction energy, which were obtained by applying the XDLVO theory. Results confirmed that there are reduced attractive interaction energies between the PPMs and NOM pollutants molecules in comparison to the interaction between the pristine PSF and NOM pollutants molecules.

为了增强聚砜（PSF）膜的防污性能，聚苯胺（PANI）纳米纤维被用作一种简便的方法来制备PANI / PSF混合膜（PPM）。膜和自然有机物（NOM）污染物之间的结垢行为通过扩展Derjaguin–Landau–Verwey–Overbeek（XDLVO）理论进行了进一步分析。总体而言，与原始PSF膜相比，PPM的性能有所提高。PPM的纯水通量增加到原始PSF的2.4倍，达到169 L·m ^-2 h ^-1 bar ^-1。掺入PANI纳米纤维后，杂化膜的拉伸强度也提高了。特别是在防污垢测量中，PPM对过滤血清白蛋白（BSA），腐殖酸（HA）和海藻酸钠（SA）溶液表现出增强的防污垢性能。通过应用XDLVO理论得到的界面相互作用能分析了防垢机理。结果证实，与原始PSF和NOM污染物分子之间的相互作用相比，PPM和NOM污染物分子之间的吸引力相互作用能降低。