Improved antibacterial activity of hemp fibre by covalent grafting of quaternary ammonium groups
Autor: | Huijuan Tang, Lining Zhao, Siqi Huang, Jianjun Li, Defang Li, Gen Pan, Wenjie Duan, Chen Anguo, Chang Li, Yong Deng |
---|---|
Jazyk: | angličtina |
Rok vydání: | 2021 |
Předmět: |
Thermogravimetric analysis
Reaction mechanism Chemical structure 02 engineering and technology 010402 general chemistry 01 natural sciences chemistry.chemical_compound antibacterial activity Hemicellulose Ammonium Cellulose lcsh:Science Research Articles Multidisciplinary Chemistry covalent grafting quaternary ammonium groups 021001 nanoscience & nanotechnology Grafting hemp fibre 0104 chemical sciences lcsh:Q 0210 nano-technology Antibacterial activity Nuclear chemistry |
Zdroj: | Royal Society Open Science, Vol 8, Iss 3 (2021) Royal Society Open Science |
ISSN: | 2054-5703 |
Popis: | 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. |
Databáze: | OpenAIRE |
Externí odkaz: |