Novel polyamide (PA) composite membranes were prepared by conducting interfacial polymerization on the modified carbon nanotube (mCNT)-deposited polyacrylonitrile (PAN) ultrafiltration membranes. Based on the characterization using TEM, SEM, FT-IR, and contact angle measurements, more even mCNT stacking could be realized on hydrolyzed PAN (hPAN) substrate. The uniformly stacked mCNT scaffold on hPAN is conducive to the formation of the PA composite membrane with a dense and crumpled texture. The prepared PA composite membrane exhibited dense crumpled texture with high hydrophilicity. The influences of surface morphology, feed temperature, and salt concentration and composition on desalination performances for PA composite membranes were investigated, followed by stability evaluation. Subjected to pervaporation desalination, the water flux attained to an ultrahigh value (104 kg m⁻² h⁻¹) with ideal rejection performance (99.99%) using 3.5 wt% NaCl aqueous solution as the feed at 70 °C. Moreover, the prepared PA composite membrane was also competent in hypersaline water desalination and acid brine water treatment. All the results demonstrated that the prepared PA composite membrane with crumpled texture had a great application potential in seawater desalination.

通过在改性碳纳米管 (mCNT) 沉积聚丙烯腈 (PAN) 超滤膜上进行界面聚合制备新型聚酰胺 (PA) 复合膜。基于使用 TEM、SEM、FT-IR 和接触角测量的表征，可以在水解的 PAN (hPAN) 基材上实现更均匀的 mCNT 堆叠。hPAN 上均匀堆叠的 mCNT 支架有利于形成质地致密、皱巴巴的 PA 复合膜。制备的 PA 复合膜呈现出致密的皱褶质地，具有高亲水性。研究了表面形貌、进料温度、盐浓度和成分对 PA 复合膜脱盐性能的影响，并进行了稳定性评价。经受渗透蒸发脱盐，^-2 h ^-1 ) 具有理想的排斥性能 (99.99%)，使用 3.5 wt% NaCl 水溶液作为进料，在 70 °C 下。此外，制备的 PA 复合膜也能​​胜任超咸水淡化和酸性盐水处理。结果表明，制备的具有皱褶纹理的PA复合膜在海水淡化中具有很大的应用潜力。