Zhang Shaohua, Dong Haibin, He Ruidong, Wang Na, Zhao Qian, Yang Liguo, Qu Zhenghai, Sun Lirong, Chen Shaojuan, Ma Jianwei, Li Jiwei
Department of Pediatrics, the Affiliated Hospital of Qingdao University, College of Textiles and Clothing, Qingdao University, Qingdao 266071, China.
Department of Pediatrics, the Affiliated Hospital of Qingdao University, College of Textiles and Clothing, Qingdao University, Qingdao 266071, China; Shandong Center for Engineered Nonwovens, Qingdao 266071, China.
Int J Biol Macromol. 2022 May 15;207:100-109. doi: 10.1016/j.ijbiomac.2022.02.155. Epub 2022 Feb 28.
In this study, Cu/Zn galvanic electrodes were sputtered on the two surfaces of hydrophilic cotton fiber nonwovens (Cotton) to prepare hydro electroactive Cu/Cotton/Zn composites. When the Cu/Cotton/Zn was used as a functional layer in the face mask, the Cu/Zn galvanic electrodes can be spontaneously activated by water vapor molecules exhaled by the human body and generate galvanic current. Based on this, the hydro electroactive Cu/Cotton/Zn demonstrated excellent antibacterial activity against Escherichia coli and Staphylococcus aureus and could deactivate Enterovirus 71 (EV71) virions transmitted through the respiratory tract by 97.72% after 15 min of contact. Moreover, the Cu/Cotton/Zn did not affect the particle filtration efficiency and breathability of the face mask's polypropylene (PP) melt-blown layer. Furthermore, the cytotoxicity assessment of Cu/Cotton/Zn showed no cytotoxicity, indicating good biological security. Overall, the Cu/Cotton/Zn may provide a new approach to increase the antibacterial and antiviral performance of current personnel protective equipment on the market.
在本研究中，将铜/锌原电池电极溅射在亲水性棉纤维无纺布（棉）的两个表面上，以制备水合电活性铜/棉/锌复合材料。当铜/棉/锌用作面罩的功能层时，铜/锌原电池电极可被人体呼出的水蒸气分子自发激活并产生电流。基于此，水合电活性铜/棉/锌对大肠杆菌和金黄色葡萄球菌表现出优异的抗菌活性，并且在接触15分钟后可使通过呼吸道传播的肠道病毒71型（EV71）病毒粒子失活97.72%。此外，铜/棉/锌不影响面罩聚丙烯（PP）熔喷层的颗粒过滤效率和透气性。此外，铜/棉/锌的细胞毒性评估显示无细胞毒性，表明具有良好的生物安全性。总体而言，铜/棉/锌可能为提高市场上现有个人防护装备的抗菌和抗病毒性能提供一种新方法。
