Improved antibacterial activity of hemp fibre by covalent grafting of quaternary ammonium groups

文献类型： 外文期刊

第一作者： Chang, Li

作者： Chang, Li;Huang, Siqi;Chen, Anguo;Li, Jianjun;Tang, Huijuan;Pan, Gen;Deng, Yong;Zhao, Lining;Li, Defang;Duan, Wenjie;Duan, Wenjie

作者机构：

关键词： hemp fibre; quaternary ammonium groups; covalent grafting; antibacterial activity

期刊名称：ROYAL SOCIETY OPEN SCIENCE （ 影响因子：2.647； 五年影响因子：2.924 ）

ISSN： 2054-5703

年卷期： 2021 年 8 卷 3 期

页码：

收录情况： SCI

摘要： In this study, a novel antibacterial hemp fibre grafted with quaternary ammonium groups (HF-GTA), were prepared by alkalization, oxidation, amination and quaternization multistage reactions. The chemical structure and micromorphology of the fibre were characterized by Fourier-transform infrared spectroscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, thermogravimetric analysis and X-ray diffraction. The grafting and reaction mechanism proved to be successful, which indicated that the grafting reaction primarily occurred on the hydroxyl group of cellulose and hemicellulose in the hemp fibre, where it retained good fibrous morphology, thermal stability and hygroscopicity. HF-GTA exhibited the best antibacterial activity, where the antibacterial ratios against Escherichia coli and Staphylococcus aureus were 95.41% and 99.64%, respectively. Even after washing 30 times, the antibacterial activity was retained at 89.78% and 91.12%, indicating that HF-GTA was endowed with good washing resistance. The antibacterial activity was owing to the electrostatic reaction reducing the electrochemical potential on the cell membrane, leading to the release of cytoplasmic substances and the dissolution of cells. This study is significantly important for guaranteeing textile quality and preventing disease transmission.

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