Nylon mesh has been applied in various fields because of its intrinsic mechanical and chemical stability. However, its application is limited by its surface property. In this work, nylon mesh was first designed to integrate with a zeolitic imidazolate framework-67 (ZIF-67) with a distinct hydrophobic property. Herein, the mechanically stable nylon mesh/carboxymethyl chitosan/ZIF-67 (NY/CMCS/ZIF-67) composite membranes were prepared via layer-by-layer self-assembly of CMCS surface functional groups to coordinate with cobalt ion and in situ growth of ZIF-67. The prepared NY/CMCS/ZIF-67 membranes were characterized by Fourier-transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, and thermogravimetric analysis. After modifications, the ZIF-67 content in the membranes reached 22 %. The water contact angle increased from 47.5 ° for nylon mesh to 128.8 ° for NY/CMCS/ZIF-67. The NY/CMCS/ZIF-67 composite membranes exhibited good oil-water emulsion separation property and oil absorption ability. After 15 oil absorption-drying cycle experiments, the oil absorption ability of the membrane was still greater than 95 %, and the oil absorption rate was 6.8 g/g. The modified nylon mesh could still be used for dye removal, the adsorption capacity of the membrane increased by 50 % compared with that of NY/CMCS, and the adsorption processes followed the pseudo-second-order model. Thus, this research provides new insights into the preparation of efficient modified nylon film with great application potential for filtration and separation in complex environments.

尼龙网因其固有的机械和化学稳定性而被应用于各个领域。然而，其应用受到其表面性质的限制。在这项工作中，尼龙网首先被设计为与具有独特疏水性的沸石咪唑酯骨架-67 (ZIF-67) 结合。在此，通过CMCS表面官能团的逐层自组装与钴离子配位并原位生长制备了机械稳定的尼龙网/羧甲基壳聚糖/ZIF-67（NY/CMCS/ZIF-67）复合膜ZIF-67。通过傅里叶变换红外光谱、X 射线衍射、扫描电子显微镜和热重分析对制备的 NY/CMCS/ZIF-67 膜进行表征。修改后，膜中的 ZIF-67 含量达到 22%。水接触角从 47 增加。尼龙网布为 5°，NY/CMCS/ZIF-67 为 128.8°。NY/CMCS/ZIF-67复合膜表现出良好的油水乳化分离性能和吸油能力。经过15次吸油-干燥循环实验，膜的吸油能力仍大于95%，吸油率为6.8g/g。改性尼龙网仍可用于染料去除，膜的吸附能力比NY/CMCS提高50%，吸附过程遵循拟二级模型。因此，这项研究为制备高效改性尼龙薄膜提供了新的见解，该薄膜在复杂环境中具有巨大的过滤和分离应用潜力。NY/CMCS/ZIF-67复合膜表现出良好的油水乳化分离性能和吸油能力。经过15次吸油-干燥循环实验，膜的吸油能力仍大于95%，吸油率为6.8g/g。改性尼龙网仍可用于染料去除，膜的吸附能力比NY/CMCS提高50%，吸附过程遵循拟二级模型。因此，这项研究为制备高效改性尼龙薄膜提供了新的见解，该薄膜在复杂环境中具有巨大的过滤和分离应用潜力。NY/CMCS/ZIF-67复合膜表现出良好的油水乳化分离性能和吸油能力。经过15次吸油-干燥循环实验，膜的吸油能力仍大于95%，吸油率为6.8g/g。改性尼龙网仍可用于染料去除，膜的吸附能力比NY/CMCS提高50%，吸附过程遵循拟二级模型。因此，这项研究为制备高效改性尼龙薄膜提供了新的见解，该薄膜在复杂环境中具有巨大的过滤和分离应用潜力。吸油率为6.8g/g。改性尼龙网仍可用于染料去除，膜的吸附能力比NY/CMCS提高50%，吸附过程遵循拟二级模型。因此，这项研究为制备高效改性尼龙薄膜提供了新的见解，该薄膜在复杂环境中具有巨大的过滤和分离应用潜力。吸油率为6.8g/g。改性尼龙网仍可用于染料去除，膜的吸附能力比NY/CMCS提高50%，吸附过程遵循拟二级模型。因此，这项研究为制备高效改性尼龙薄膜提供了新的见解，该薄膜在复杂环境中具有巨大的过滤和分离应用潜力。