Zou Qian, Gai Yinuo, Cai Yajuan, Gai Xiaotang, Xiong Siwei, Wei Nanjun, Jiang Mengying, Chen Liye, Liu Yang, Gai Jinggang
State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu, 610065 Sichuan China.
Chengdu Yucai, No. 7 School Xuedao Branch, Chengdu, 610065 Sichuan China.
Cellulose (Lond). 2022;29(10):5711-5724. doi: 10.1007/s10570-022-04582-x. Epub 2022 May 21.
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.
The online version contains supplementary material available at 10.1007/s10570-022-04582-x.
在新冠疫情期间，医用口罩一直是公众必不可少的消耗品。然而，长时间佩戴口罩会让佩戴者感到不适，大量废弃的不可生物降解口罩给我们的环境带来了沉重负担。在本文中，我们采用可降解的壳聚糖@银（CS@Ag）核壳纤维和植物纤维制备了一种具有优异热舒适性、自我杀菌和抗病毒效果的环保口罩。CS@Ag核壳纤维的热网络极大地提高了口罩的面内热导率，比商用口罩高出4.45倍。由于银的导电性，制成的口罩可以在寒冷环境中通过电加热为佩戴者保暖，并在室温下轻松对新冠病毒进行消毒。同时，原位还原的银纳米颗粒（AgNPs）赋予口罩卓越的抗菌性能。因此，这种口罩在满足对热舒适、抗菌、抗病毒和环保口罩的迫切需求方面显示出巨大潜力。
在线版本包含可在10.1007/s10570-022-04582-x获取的补充材料。
