现代纺织技术2025，Vol.33Issue(3)：48-57,10.DOI:10.19398/j.att.202406004
基于ZIF-L的抗菌和自清洁棉织物的制备及性能
Preparation and properties of antibacterial and self-cleaning cotton fabrics based on ZIF-L
摘要
Abstract
Cotton fibers,widely used as natural textile fibers,are favored for their skin-friendly,soft,and economical characteristics.However,they are susceptible to microbial contamination.With the frequent occurrence of global pandemics,the public's concern for hygiene and health issues has been increasing,and the demand for textiles with antibacterial properties has also risen accordingly. Metal-organic frameworks(MOFs)represent a class of novel porous materials characterized by high porosity and large specific surface area,formed through coordination bonds between metal ions or clusters and organic ligands.Zeolitic imidazolate framework-L(ZIF-L),a subset of MOFs,is self-assembled from Zn2+ions and 2-methylimidazole(2-MI)ligands.ZIF-L,through the release of Zn2+ions,can disrupt bacterial cell membranes,interfere with the intracellular ionic environment balance,and damage bacterial proteins,thereby exerting antibacterial effects.The material itself possesses an intrinsic release system which slowly and persistently releases metal ions,achieving a long-term effective antibacterial effect.Compared with natural and organic antibacterial materials,ZIF-L's inorganic antibacterial properties offer advantages such as high-temperature resistance,strong bactericidal power,long-lasting antibacterial effect,and low bacterial resistance.Moreover,ZIF-L's unique blade-like structure,oriented like a"dagger",can grow vertically on the carrier,providing a physical antibacterial mechanism by the tip destroying attached microorganisms.Further hydrophobic treatment on the antibacterial cotton fabric can create a hydrophobic surface akin to the lotus leaf effect.Hydrophobic self-cleaning surfaces can repel water;water droplets roll away dirt and bacteria during the rolling process,achieving self-cleaning effects. This article used a cotton fabric as the base material and prepared two-dimensional leaf-like nanosheet structure ZIF-L using 2-methyl imidazole(2-MI)and zinc chloride(ZnCl2)as raw materials,and loaded it onto the surface of cotton fabric(ZIF-L@cotton)through in-situ growth.Subsequently,the hydrophobicity of the cotton fabric was endowed by vapor deposition of methyltrimethoxysilane(MTMS).The surface morphology and structure of the fabric were characterized by instruments such as field emission scanning electron microscopy,Fourier transform infrared spectroscopy,and X-ray photoelectron spectroscopy.The hydrophilicity and hydrophobicity of the fabric was analyzed by contact angle,and the antibacterial performance of the fabric was evaluated by inhibition zone and antibacterial rate experiments,while the stability of the fabric's performance was tested through multiple washing cycles.Experimental results showed that as the content of 2-MI and reaction time increased,the size and density of ZIF-L increased accordingly.With a molar ratio of 2-MI to ZnCl2 of 7∶1 and a reaction time of 3 hours,a ZIF-L@cotton fabric with better morphology was obtained.Both the ZIF-L@cotton fabric and the MTMS/ZIF-L@cotton fabric had good antibacterial effects on E.coli and S.aureus.The ZIF-L@cotton fabric maintained good hydrophilicity,while the MTMS/ZIF-L@cotton fabric showed satisfactory hydrophobicity and self-cleaning properties,and retained stable functional performance after multiple washing cycles.In summary,this study demonstrates that the ZIF-L@cotton fabric and the MTMS/ZIF-L@cotton fabric exhibit good properties and hold broad application prospects in the field of antibacterial textiles.关键词
二维Zn基金属有机框架(ZIF-L)/原位生长/棉织物/抗菌/甲基三甲氧基硅烷(MTMS)/自清洁Key words
ZIF-L/in situ growth/cotton/antibacterial/MTMS/self-cleaning分类
轻工业引用本文复制引用
蓝丽莹,仇巧华..基于ZIF-L的抗菌和自清洁棉织物的制备及性能[J].现代纺织技术,2025,33(3):48-57,10.基金项目
浙江省自然科学基金项目(LQ23E030012) （LQ23E030012）
浙江理工大学科研启动基金项目(22202001-Y) （22202001-Y）
