Lou Zhuyushuang, Wang Ling, Yu Kefei, Wei Qufu, Hussain Tanveer, Xia Xin, Zhou Huimin
College of Textile and Clothing, Xinjiang University, Xinjiang, Urumchi, 830046, China.
Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi, Jiangsu, 214122, China.
J Memb Sci. 2023 Apr 15;672:121473. doi: 10.1016/j.memsci.2023.121473. Epub 2023 Feb 9.
The COVID-19 pandemic has caused serious social and public health problems. In the field of personal protection, the facial masks can prevent infectious respiratory diseases, safeguard human health, and promote public safety. Herein, we focused on preparing a core filter layer for masks using electrospun polyvinyl butyral/apocynum venetum extract nanofibrous membranes (PVB/AVE NMs), with durable interception efficiency and antibacterial properties. In the spinning solution, AVE acted as a salt to improve electrical conductivity, and achieve long-lasting interception efficiency with adjustable pore size. It also played the role of an antibacterial agent in PVB/AVE NMs to achieve win-win effects. The hydrophobicity of PVB-AVE-6% was 120.9° whereas its filterability reached 98.3% when the pressure drop resistance was 142 Pa. PVB-AVE-6% exhibited intriguing properties with great antibacterial rates of 99.38% and 98.96% against and , respectively. After a prolonged usability test of 8 h, the filtration efficiency of the PVB/AVE masks remained stable at over 97.7%. Furthermore, the antibacterial rates of the PVB/AVE masks on and were 96.87% and 96.20% respectively, after using for 2 d. These results indicate that PVB/AVE NMs improve the protective performance of ordinary disposable masks, which has certain application in air filtration.
新型冠状病毒肺炎疫情引发了严重的社会和公共卫生问题。在个人防护领域，口罩可预防呼吸道传染病，保障人类健康，促进公共安全。在此，我们专注于使用静电纺丝聚乙烯醇缩丁醛/罗布麻提取物纳米纤维膜（PVB/AVE NMs）制备口罩的核心过滤层，其具有持久的拦截效率和抗菌性能。在纺丝溶液中，AVE作为一种盐提高电导率，并通过可调节的孔径实现持久的拦截效率。它还在PVB/AVE NMs中起到抗菌剂的作用，以实现双赢效果。PVB-AVE-6%的疏水性为120.9°，当压降阻力为142 Pa时，其过滤率达到98.3%。PVB-AVE-6%表现出有趣的性能，对金黄色葡萄球菌和大肠杆菌的抗菌率分别为99.38%和98.96%。经过8小时的长时间可用性测试后，PVB/AVE口罩的过滤效率保持稳定在97.7%以上。此外，PVB/AVE口罩在使用2天后，对金黄色葡萄球菌和大肠杆菌的抗菌率分别为96.87%和96.20%。这些结果表明，PVB/AVE NMs提高了普通一次性口罩的防护性能，在空气过滤方面具有一定的应用价值。
