自愈水凝胶
抗菌活性
木聚糖
纤维素
席夫碱
材料科学
细菌纤维素
高分子化学
银纳米粒子
化学工程
核化学
化学
纳米颗粒
有机化学
纳米技术
细菌
工程类
生物
遗传学
作者
Yajie Hu,Nan Li,Panpan Yue,Gegu Chen,Xiang Hao,Jing Bian,Feng Peng
出处
期刊:Cellulose
[Springer Nature]
日期:2022-01-01
卷期号:29 (2): 1055-1067
被引量:7
标识
DOI:10.1007/s10570-021-04359-8
摘要
Hydrogels with antibacterial activity have attracted more and more attention in the wound dressing area. Here, we developed antibacterial hydrogels directly from cellulose, xylan, and silver nitrate via a three-step process, involving chemical modification, Schiff-base reaction, and green reduction reaction. Amino cellulose (AC) and dialdehyde xylan (DAX) were prepared by chemical modification. Then, they were cross-linked by Schiff-base bonds (C = N bonds) to prepare AC-DAX hydrogels. The crosslinking density and porosity of AC-DAX hydrogels were significantly influenced by the mass ratios of AC to DAX. The AC-DAX-Ag hydrogels were synthesized by the reduction reaction of the C = N bonds without adding additional reductants. The demonstrated AC-DAX hydrogels and AC-DAX-Ag hydrogels showed similar layered surface structure and swelling capacity. In addition, AC-DAX-Ag hydrogels exhibited excellent antibacterial activity against E. coli with an obvious inhibition zone diameter about 0.50 cm. The developed AC-DAX-Ag hydrogels with antibacterial activity represents an attractive alternative to the wound dressing materials toward biomedical area. This work provides new ideas for the fabrication of bio-based antibacterial material.
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