Nano-copper ions assembled cellulose-based composite with antibacterial activity for biodegradable personal protective mask

IF 4.3 3区工程技术 Q2 ENGINEERING, CHEMICAL Frontiers of Chemical Science and Engineering Pub Date : 2023-05-18 DOI:10.1007/s11705-022-2288-2

Xinyi Shao, Jian Wang, Zetan Liu, Na Hu, Ruimin Zhang, Cailin Quan, Xinjie Yao, Cuihua Dong

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引用次数: 1

Abstract

The current SARS-CoV-2 pandemic has resulted in the widespread use of personal protective equipment, particularly face masks. However, the use of commercial disposable face masks puts great pressure on the environment. In this study, nano-copper ions assembled cotton fabric used in face masks to impart antibacterial activity has been discussed. To produce the nanocomposite, the cotton fabric was modified by sodium chloroacetate after its mercerization, and assembled with bactericidal nano-copper ions (about 10.61 mg·g⁻¹) through electrostatic adsorption. It demonstrated excellent antibacterial activity against Staphylococcus aureus and Escherichia coli because the gaps between fibers in the cotton fabric allow the nano-copper ions to be fully released. Moreover, the antibacterial efficiency was maintained even after 50 washing cycles. Furthermore, the face mask constructed with this novel nanocomposite upper layer exhibited a high particle filtration efficiency (96.08% ± 0.91%) without compromising the air permeability (28.9 min·L⁻¹). This green, economical, facile, and scalable process of depositing nano-copper ions onto modified cotton fibric has great potential to reduce disease transmission, resource consumption, and environmental impact of waste, while also expanding the range of protective fabrics.

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纳米铜离子组装的具有抗菌活性的纤维素基复合材料用于可生物降解的个人防护面罩。

当前的严重急性呼吸系统综合征冠状病毒2型疫情导致了个人防护装备的广泛使用，尤其是口罩。然而，商用一次性口罩的使用给环境带来了巨大压力。在这项研究中，讨论了纳米铜离子组装的棉布用于口罩以赋予抗菌活性。为了制备纳米复合材料，在棉织物丝光后用氯乙酸钠对其进行改性，并通过静电吸附与杀菌纳米铜离子（约10.61mg·g-1）组装。它对金黄色葡萄球菌和大肠杆菌表现出优异的抗菌活性，因为棉织物中纤维之间的间隙可以充分释放纳米铜离子。此外，即使在50次洗涤循环之后也保持了抗菌效率。此外，用这种新型纳米复合材料上层构建的口罩在不影响透气性（28.9min·L-1）的情况下表现出高的颗粒过滤效率（96.08%±0.91%）。这种将纳米铜离子沉积到改性棉纤维上的绿色、经济、简单且可扩展的工艺在减少疾病传播、资源消耗和废物对环境的影响方面具有巨大潜力，同时也扩大了防护织物的范围。

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来源期刊

Frontiers of Chemical Science and Engineering ENGINEERING, CHEMICAL-

CiteScore

7.60

自引率

6.70%

发文量

868

审稿时长

1 months

期刊介绍： Frontiers of Chemical Science and Engineering presents the latest developments in chemical science and engineering, emphasizing emerging and multidisciplinary fields and international trends in research and development. The journal promotes communication and exchange between scientists all over the world. The contents include original reviews, research papers and short communications. Coverage includes catalysis and reaction engineering, clean energy, functional material, nanotechnology and nanoscience, biomaterials and biotechnology, particle technology and multiphase processing, separation science and technology, sustainable technologies and green processing.