Preparation of Ag Doped Keratin/PA6 Nanofiber Membrane with Enhanced Air Filtration and Antimicrobial Properties

Shen, Baolei; Zhang, Dongyu; Wei, Yujuan; Zhao, Zhijun; Ma, Xiaofei; Zhao, Xiaodan; Wang, Shuo; Yang, Wenxiu

doi:10.3390/polym11091511

Cited by 37 publications

(18 citation statements)

References 42 publications

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“…Further investigation of a different fiber orientation could lead to interesting results, which would open up the possibility of developing high‐strength nanofibre keratin. Shen et al 109 reported the filtration efficiency of the silver nanoparticles doped with keratin/polyamide6 nanofibre membrane. Nanofibres have been developed with varying percentages of keratin (0%, 30%, 50%, and 70%).…”

Section: Biodegradable Natural Polymer Based Nanofibresmentioning

confidence: 99%

Potential natural polymer‐based nanofibres for the development of facemasks in countering viral outbreaks

Vigneshwaran

Babu

Garrison

et al. 2021

J of Applied Polymer Sci

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The global coronavirus disease 2019 (COVID‐19) pandemic has rapidly increased the demand for facemasks as a measure to reduce the rapid spread of the pathogen. Throughout the pandemic, some countries such as Italy had a monthly demand of ca. 90 million facemasks. Domestic mask manufacturers are capable of manufacturing 8 million masks each week, although the demand was 40 million per week during March 2020. This dramatic increase has contributed to a spike in the generation of facemask waste. Facemasks are often manufactured with synthetic materials that are non‐biodegradable, and their increased usage and improper disposal are raising environmental concerns. Consequently, there is a strong interest for developing biodegradable facemasks made with for example, renewable nanofibres. A range of natural polymer‐based nanofibres has been studied for their potential to be used in air filter applications. This review article examines potential natural polymer‐based nanofibres along with their filtration and antimicrobial capabilities for developing biodegradable facemask that will promote a cleaner production.

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Section: Biodegradable Natural Polymer Based Nanofibresmentioning

confidence: 99%

Potential natural polymer‐based nanofibres for the development of facemasks in countering viral outbreaks

Vigneshwaran

Babu

Garrison

et al. 2021

J of Applied Polymer Sci

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“…The TRNG principle used by this system also mitigated the risk of ozone generation [ 73 ]. Biodegradable filters made of silk protein, called as silk nanofibrous air filters (SNAF), were also developed to separate PM 2.5 with a PFE of 97% and a QF of 0.3 at particle concentration of 444 μg/cm 3 [ 74 ]. Similar efficiencies were observed in silver (Ag)-doped keratin/nylon-6 nanofibrous composite membranes, where the average fiber sizes varied between 155 and 293 nm for various combination of silver doping and keratin concentration [ 75 ].…”

Section: Filtration Of Pms Using Ultrafine Fibersmentioning

confidence: 99%

Ultrafine PVDF Nanofibers for Filtration of Air-Borne Particulate Matters: A Comprehensive Review

Sanyal

Sinha-Ray

2021

Polymers

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The ongoing global pandemic has bestowed high priority uponthe separation of air-borne particulate matters (PMs), aerosols, etc. using nonwoven fibrous materials, especially for face masks as a means of personal protection. Although spunbond or meltblown nonwoven materials are amongst the forerunners for polymer microfiber-based face mask or air filter development in mass scale, relatively new process of nonwoven manufacturing such as electrospinning is gaining a lot of momentum amongst the filter membrane manufacturers for its scalability of nanofiber-based filter membrane fabrication. There are several nanofiber-based face masks developing industries, which claim a very high efficiency in filtration of particulate matters (PM0.1–10) as well as other aerosols for their products. Polyvinylidene fluoride (PVDF), which is commonly known for its use of tactile sensors and energy harvesters, due to its piezoelectric property, is slowly gaining popularity among researchers and developers as an air filter material. Electrospun PVDF nanofibers can be as fine as 50 nm in mass scale, which allows the membrane to have large surface area compared to its volume, enhancing nanofiber–PM interaction. At the same time, the breathability index can be improved through these PVDF nanofiber membranes due to their architectural uniqueness that promotes slip flow around the fibers. The conductive nature of PVDF makes it advantageous as a promising electret filter allowing better capturing of ultrafine particles. This review aims to provide a comprehensive overview of such PVDF nanofiber-based filter membranes and their roles in air filtration, especially its application in filtrate of air-borne PMs.

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“…Nanofibers as materials can be used as a platform in Raman spectroscopy [81], in immunoanalysis [82], for air filtration [83] and as a pseudo-enzyme [84]. As can be seen, the AgNPs, besides their important wound treatment activity, which is summarized in Table 3 below, can be used also for disinfection and catalytic purposes.…”

Section: Nanofibersmentioning

confidence: 99%

Silver Nanomaterials for Wound Dressing Applications

et al. 2020

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Silver nanoparticles (AgNPs) have recently become very attractive for the scientific community due to their broad spectrum of applications in the biomedical field. The main advantages of AgNPs include a simple method of synthesis, a simple way to change their morphology and high surface area to volume ratio. Much research has been carried out over the years to evaluate their possible effectivity against microbial organisms. The most important factors which influence the effectivity of AgNPs against microorganisms are the method of their preparation and the type of application. When incorporated into fabric wound dressings and other textiles, AgNPs have shown significant antibacterial activity against both Gram-positive and Gram-negative bacteria and inhibited biofilm formation. In this review, the different routes of synthesizing AgNPs with controlled size and geometry including chemical, green, irradiation and thermal synthesis, as well as the different types of application of AgNPs for wound dressings such as membrane immobilization, topical application, preparation of nanofibers and hydrogels, and the mechanism behind their antimicrobial activity, have been discussed elaborately.

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Preparation of Ag Doped Keratin/PA6 Nanofiber Membrane with Enhanced Air Filtration and Antimicrobial Properties

Cited by 37 publications

References 42 publications

Potential natural polymer‐based nanofibres for the development of facemasks in countering viral outbreaks

Potential natural polymer‐based nanofibres for the development of facemasks in countering viral outbreaks

Ultrafine PVDF Nanofibers for Filtration of Air-Borne Particulate Matters: A Comprehensive Review

Silver Nanomaterials for Wound Dressing Applications

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