Using biomass resources to develop high-performance superhydrophobic materials that can effectively separate oily wastewater has become an urgent demand. Herein, a novel biomass-based benzoxazine (C-aPOSS) from cardanol and aminopropyllsobutyl-POSS was designed and synthesized, and superhydrophobic cotton fabric (PC-aPOSS/CF) was constructed by dipping cotton fabric in C-aPOSS solution and then polymerizing in situ. The PC-aPOSS/CF exhibited high water contact angle of 155.0° ± 0.3° as well as excellent mechanical and chemical resistance. Due to its super-wettability and porosity, the superhydrophobic PC-aPOSS/CF possessed high separation performance for various oil/water mixtures with oil purities higher than 99.86% and oil fluxes above 3600 L·m⁻²·h⁻¹. Furthermore, the superhydrophobic PC-aPOSS/CF and polyurethane sponge were used to prepare sandwich-like composite filter membrane for separating surfactant-free and surfactant-stabilized water-in-oil emulsions. The composite filter membrane exhibited oil purity greater than 99.93% and ultrahigh oil flux of over 127,289 L m⁻² h⁻¹ bar⁻¹ in separating surfactant-free water-in-oil emulsions, and oil purity lager than 99.87% and oil flux higher than 17,895 L m⁻² h⁻¹ bar⁻¹ in separating surfactant-stabilized water-in-oil emulsions. After operating 50 separation cycles of surfactant-free water-in-trichloromethane emulsion, oil purity was still above 99.99%, which indicates the outstanding recyclability of the composite filter membrane. Therefore, the development of high performance superhydrophobic PC-aPOSS/CF may provide a route to the oily wastewater treatment and oil purification.

利用生物质资源开发能够有效分离含油废水的高性能超疏水材料已成为迫切需求。本文以腰果酚和氨丙基异丁基-POSS为原料，设计合成了一种新型的生物质基苯并恶嗪（C-aPOSS），并通过将棉织物浸入C-aPOSS溶液中聚合，构建了超疏水棉织物（PC-aPOSS/CF）。原地。PC-aPOSS/CF 表现出 155.0° ± 0.3° 的高水接触角以及优异的机械和耐化学性。^{由于其超润湿性和孔隙率，超疏水PC-aPOSS/CF对油纯度高于99.86%、油通量高于3600 L·m -2} ·h ^-1的各种油水混合物具有较高的分离性能。. 此外，超疏水PC-aPOSS/CF和聚氨酯海绵被用于制备夹层状复合滤膜，用于分离无表面活性剂和表面活性剂稳定的油包水乳液。该复合滤膜在分离无表面活性剂的油包水乳液时油纯度大于99.93%，油通量超过127,289 L m ^-2 h ^-1 bar ^-1 ，油纯度大于99.87%，油通量高于 17,895 L m ^-2 h ^-1 bar ^-1用于分离表面活性剂稳定的油包水乳液。无表面活性剂三氯甲烷包水乳液经过50次分离循环后，油品纯度仍保持在99.99%以上，表明复合滤膜具有出色的可回收性。因此，高性能超疏水PC-aPOSS/CF的开发可能为含油废水处理和油品净化提供一条途径。