Ultrathin, Stimuli-Responsive, Antimicrobial, Self-Cleaning, Reusable, and Biodegradable, Micro/Nanofibrous Electrospun Mat as an Efficient Face Mask Filter for Airborne Disease Prevention

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-05-01 DOI:10.1021/acs.nanolett.4c04525

Keya Ganguly, Aayushi Randhawa, Sayan Deb Dutta, Hyeonseo Park, Mehran Mohammad Hossein Pour, Hojin Kim, Rumi Acharya, Tejal V. Patil, Beom-Soo Shin, Dae Hyun Kim, Ki-Taek Lim

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Abstract

A multifunctional, electrospun, ultrathin face mask is desirable for preventing disease spread while ensuring breathability. However, balancing ultrathin construction with antimicrobial efficacy is challenging. Here, we fabricated an ultrathin micro/nanofibrous electrospun matrix, consisting of three biodegradable polymer layers, for high antibacterial efficiency, breathability, and biodegradability. The outer layer, with an average thickness of 9.01 ± 3.1 μm, is composed of polycaprolactone (PCL), silver nitrate (AgNO₃), and β-cyclodextrin (β-CD). The middle layer, with a thickness of 4.61 ± 1.4 μm, comprises poly(vinyl alcohol) (PVA) and multiwalled carbon nanotubes (MWCNT) as a conductive layer. The inner layer, with a thickness of 5.12 ± 1.4 μm, contains PVA, carboxymethyl chitosan (CMC), and cellulose nanofibrils (CNFs) as a superabsorbent layer, supported by medical gauze. With a total thickness of ∼300 μm, the mask provides antibacterial efficacy, self-cleaning, reusability, mechanical stability, and biodegradability. This design advances filtering face masks, offering a solution to combat contagious diseases while minimizing environmental impact.

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超薄，刺激响应，抗菌，自清洁，可重复使用，可生物降解，微/纳米纤维静电纺垫作为一种有效的面罩过滤器，用于预防空气传播疾病

多功能、静电纺丝、超薄口罩是防止疾病传播，同时保证透气的理想选择。然而，平衡超薄结构与抗菌功效是具有挑战性的。在这里，我们制作了一种超薄微/纳米纤维静电纺基质，由三个可生物降解的聚合物层组成，具有高抗菌效率，透气性和可生物降解性。外层由聚己内酯（PCL）、硝酸银（AgNO3）和β-环糊精（β-CD）组成，平均厚度为9.01±3.1 μm。中间层厚度为4.61±1.4 μm，由聚乙烯醇（PVA）和多壁碳纳米管（MWCNT）作为导电层组成。内层厚度为5.12±1.4 μm，由聚乙烯醇（PVA）、羧甲基壳聚糖（CMC）和纤维素纳米纤维（CNFs）作为高吸水性层，由医用纱布支撑。该口罩的总厚度为~ 300 μm，具有抗菌、自清洁、可重复使用、机械稳定性和生物降解性等优点。这种设计推动了过滤口罩的发展，提供了一种对抗传染病的解决方案，同时最大限度地减少了对环境的影响。

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来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.