In this study, a biodegradable paper-based composite with good mechanical and antibacterial properties was obtained by first reinforcing the cotton pulp-based paper with carboxylated cellulose nanofiber (CNF) via the Williamson reaction, followed by in situ generating zeolitic imidazolate framework-67 (ZIF-67) nanoparticles on the surface of the resulting cellulosic material. The mechanical properties and antibacterial activities of the resulting composite were investigated. The tensile testing demonstrated that the composites prepared with 2.5 wt% CNF exhibited outstanding mechanical performance under dry and wet conditions with the tensile strength values of 17.20 and 1.90 MPa, respectively, approximately 1.3 and 11 times higher compared to that of the original cellulose paper. Furthermore, the antibacterial experiments showed that the composites exhibited significant bacteriostasis, and the antibacterial properties increased significantly with increasing ZIF-67 loading in the composites. Consequently, this biodegradable composite could be potentially used in the field of medical and health security.

在这项研究中，通过首先通过威廉姆森反应用羧化纤维素纳米纤维（CNF）增强棉浆基纸，然后原位生成沸石咪唑盐骨架67，获得了具有良好机械和抗菌性能的可生物降解纸基复合材料。 ZIF-67）形成的纤维素材料表面上的纳米颗粒。研究了所得复合材料的机械性能和抗菌活性。拉伸试验表明，用2.5 wt％CNF制备的复合材料在干燥和潮湿条件下均表现出出色的机械性能，其拉伸强度分别为17.20和1.90 MPa，比原始纤维素纸高出约1.3倍和11倍。此外，抗菌实验表明，复合材料具有显着的抑菌作用，并且随着ZIF-67含量的增加，抗菌性能显着提高。因此，这种可生物降解的复合材料可潜在地用于医疗和健康保障领域。