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Eco-friendly chitosan@silver/plant fiber membranes for masks with thermal comfortability and self-sterilization |
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| Authors: | Zou Qian Gai Yinuo Cai Yajuan Gai Xiaotang Xiong Siwei Wei Nanjun Jiang Mengying Chen Liye Liu Yang Gai Jinggang |
| Institution: | 1.State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu, 610065, Sichuan, China ;2.Chengdu Yucai, No. 7 School Xuedao Branch, Chengdu, 610065, Sichuan, China ;3.Sichuan Guojian Inspection Co., Ltd, No. 17, Section 1, Kangcheng Road, Jiangyang District, Luzhou, 646099, Sichuan, China ;4.Wuyuzhang Honors College of Sichuan University, Chengdu, 610065, Sichuan, China ;5.College of Computer Science of Sichuan University, Chengdu, 610065, Sichuan, China ; |
| Abstract: | The surgical masks have been essential consumables for public in the COVID-19 pandemic. However, long-time wearing masks will make wearers feel uncomfortable and massive discarded non-biodegradable masks lead to a heavy burden on our environment. In this paper, we adopt degradable chitosan@silver (CS@Ag) core–shell fibers and plant fibers to prepare an eco-friendly mask with excellent thermal comfort, self-sterilization, and antiviral effects. The thermal network of CS@Ag core–shell fibers highly improves the in-plane thermal conductivity of masks, which is 4.45 times higher than that of commercial masks. Because of the electrical conductivity of Ag, the fabricated mask can be electrically heated to warm the wearer in a cold environment and disinfect COVID-19 facilely at room temperature. Meanwhile, the in-situ reduced silver nanoparticles (AgNPs) endow the mask with superior antibacterial properties. Therefore, this mask shows a great potential to address the urgent need for a thermally comfortable, antibacterial, antiviral, and eco-friendly mask. Graphical abstract |
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