Hydrophilic poly (ethylene-co-vinyl alcohol) (EVOH) was blended with hydrophobic polysulfone (PSF) in the presence of polyethylene glycol (PEG) (20 kDa), which acted as a hydrophilic additive and compatibilizer, to fabricate ultrafiltration (UF) membranes with high porosity and antifouling properties. The polymer blend containing 10 wt% EVOH was selected for optimization using PEG (0 to 24 wt%). After a detailed study, it was concluded that 20 wt% of PEG content was optimal for mixing with PSF/EVOH to increase miscibility. The membranes were characterized using differential scanning calorimetry (DSC) analysis, contact angle, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The effectiveness of PEG as a compatibilizer was observed via no phase separation occurred when the solution was allowed to stand at room temperature for four weeks. It was further confirmed by the appearance of a single T_m peak in DSC. In addition, molecular dynamic simulations illustrated that the PSF/EVOH 90/10 wt% blend had a radial distribution of g(r) = 3.29 Å, and g(r) = 2.69 Å in the presence of PEG, indicating better miscibility in the presence of PEG. Pure water permeance of blend membrane (85/15 wt%) reached 316 L.m^-2h⁻¹ bar⁻¹, 54% greater than the pristine membrane. Simultaneously, bovine serum albumin (BSA) rejection of up to 97% and permeance recovery ratio of 87% were observed for the PSF/EVOH 90/10 wt% blend membrane, showing improved hydrophilicity and antifouling properties. These findings identify a potential modifier for fabricating low fouling UF membranes for wastewater treatment by blending with EVOH and PEG.

在作为亲水添加剂和增容剂的聚乙二醇 (PEG) (20 kDa) 存在下，将亲水性聚 (乙烯-共聚-乙烯醇) (EVOH) 与疏水性聚砜 (PSF) 混合，以制造超滤 (UF)具有高孔隙率和防污性能的膜。选择含有 10 wt% EVOH 的聚合物共混物使用 PEG（0 至 24 wt%）进行优化。经过详细研究，得出的结论是 20 wt% 的 PEG 含量最适合与 PSF/EVOH 混合以增加混溶性。使用差示扫描量热法 (DSC) 分析、接触角、扫描电子显微镜 (SEM) 和透射电子显微镜 (TEM) 对膜进行表征。当溶液在室温下放置 4 周时没有发生相分离，观察到 PEG 作为增容剂的有效性。单T的出现进一步证实了这一点_{DSC 中的m}峰值。此外，分子动力学模拟表明 PSF/EVOH 90/10 wt% 共混物在 PEG 存在下具有 g(r) = 3.29 Å 和 g(r) = 2.69 Å 的径向分布，表明在PEG的存在。混合膜的纯水渗透率（85/15 wt%）达到316 Lm ^-2 h ^-1 bar ^-1，比原始膜高54%。同时，对于 PSF/EVOH 90/10 wt% 共混膜，观察到牛血清白蛋白 (BSA) 排斥率高达 97%，渗透恢复率高达 87%，显示出改善的亲水性和防污性能。这些发现确定了一种潜在的改性剂，可通过与 EVOH 和 PEG 混合来制造用于废水处理的低污染超滤膜。