Novel super-hydrophobic poly(aryl ether ketone) (PAEK) membranes have been firstly prepared by modifying ordinary PAEK into hexafluorbisphenol A-PAEK through traditional nucleophilic condensation polymerization and subsequently simple electrospraying technique. With the solution concentration increased, the micromorphology exhibited nanofibers, nanofiber with spindles, 3D network with microspheres embedded, microspheres and dense films, successively. The static water contact angle increased from 99° to 155°, while the sliding angle from 1.3° to 6.8° (±1°), in which the 3D network presented the strongest super-hydrophobicity. After 200 h of water flushing, the rough surface structure and super-hydrophobicity of the membranes were well retained. Moreover, the membrane exhibited wonderful self-cleaning property, oil/water separation property, and stability due to the hierarchical micro/nanostructures. This work provides a new route for the creation of super-hydrophobic high performance engineering plastic fabrics with the potential values in large-scale application of filtration, oil/water separation, and antifouling.

中文翻译：

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一步电喷雾制备的3D网络超疏水六氟双酚A聚（芳醚酮）膜

首先通过传统的亲核缩聚和随后的简单电喷雾技术将普通 PAEK 改性为六氟双酚 A-PAEK 制备了新型超疏水性聚芳醚酮 (PAEK) 膜。随着溶液浓度的增加，微观形貌依次呈现纳米纤维、纺锤体纳米纤维、嵌入微球的3D网络、微球和致密薄膜。静态水接触角从99°增加到155°，而滑动角从1.3°增加到6.8°（±1°），其中3D网络表现出最强的超疏水性。经过 200 h 的水冲洗后，膜的粗糙表面结构和超疏水性得到了很好的保留。此外，该膜表现出优异的自洁性、油水分离性、由于分层微/纳米结构而具有稳定性。该工作为制备超疏水高性能工程塑料织物提供了一条新途径，在过滤、油水分离和防污等方面具有大规模应用的潜在价值。