氯
壳聚糖
膜
纤维素
细菌纤维素
极限抗拉强度
纳米纤维
灭菌(经济)
化学
化学工程
污染
抗菌活性
复合数
材料科学
复合材料
细菌
有机化学
外汇
生态学
货币经济学
外汇市场
经济
工程类
生物
生物化学
遗传学
作者
Shuxiu Wang,Jinsong Zeng,Pengfei Li,Jinpeng Li,Bin Wang,Wunhua Gao,Jun Xu
标识
DOI:10.1016/j.ijbiomac.2023.127065
摘要
Direct addition of disinfectants and membrane separation techniques have been common methods to address microbial contamination in water. However, disinfectants may generate toxic by-products, and even minor damage or biofilm formation on filtration membranes can lead to a heightened risk of microbial contamination. Consequently, how to quickly and safely disinfect microbial contaminated water sources remains a huge challenge. In this study, the high-strength broad-spectrum antibacterial CNF/CS composite membrane was fabricated by utilizing cellulose nanofibers (CNF) to reinforce the structure of chitosan (CS). The resulting CNF/CS composite membrane exhibits an impressive tensile strength of 148 MPa and boasts an active chlorine content of 5.29 %. Notably, even after undergoing 50 washing cycles and 10 repeated chlorination procedures, the structural integrity and high active chlorine content of the composite membrane remain preserved, validating its exceptional strength, stability, and chlorine rechargeability. Additionally, the CNF/CS antibacterial materials demonstrate remarkable attributes in terms of rapid sterilization, sustained and consistent release of active chlorine, and efficient inhibition of biofilm formation, demonstrating great potential in efficient, green, and safe sterilization.
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