Antibacterial nanostructured composite coating on high performance Vectran™ fabric for aerospace structures

Balagna, Cristina; Irfan, Muhammad; Perero, Sergio; Miola, Marta; Maina, Giovanni; Crosera, Matteo; Santella, Daniela; Simone, Antonia; Ferraris, Monica

doi:10.1016/j.surfcoat.2019.05.076

Cited by 21 publications

(11 citation statements)

References 41 publications

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“…The distance between targets and substrates was 14 cm. The co-sputtering process parameters were optimized as reported in the previous studies for cotton substrate [ 25 ], other textile materials [ 26 , 28 ] and glass-fibre air filter [ 29 ].…”

Section: Methodsmentioning

confidence: 99%

“…The aim of this work is the evaluation of the antiviral effect of a silver nanocluster/silica composite coating deposited on fibre-based air filters via co-sputtering through a patented procedure [ 31 ]. Over the past ten years, authors developed this nanostructured composite coating [ [19] , [20] , [21] ] for several applications, from biomedical implants [ 22 , 23 ], to mobile phones [ 24 ], natural and technical textiles [ 25 , 26 ], aerospace structures [ 27 , 28 ], and also glass-fibre air filters [ 29 ], but evaluating only antibacterial and antifungal effect. In a recent short communication, authors' preliminary demonstrated the virucidal effect of the silver nanoclusters/silica composite coating deposited on disposable facemask towards SARS-CoV-2 [ 30 ].…”

Section: Introductionmentioning

confidence: 99%

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Nanostructured composite coating endowed with antiviral activity against human respiratory viruses deposited on fibre-based air filters

Balagna

Francese

Perero

et al. 2021

Surface and Coatings Technology

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The widespread of viral airborne diseases is becoming a critical problem for human health and safety, not only for the common cold and flu, but also considering more serious infection as the current pandemic COVID-19. Even if the current heating, ventilating and air conditioning (HVAC) systems limit the disease transmission by air, the air filters are susceptible to microbial colonization. In addition, viruses spread via droplets (aerosol) produced by direct or indirect contact with infected people. In this context, the necessity of an efficient HVAC system, able to capture and inactivate viruses- and bacteria-rich aerosols, thus preserving a safe indoor air environment and protecting people, is of enormous importance. The aim of this work is the assessment of the antiviral properties of a silver nanoclusters/silica composite coating deposited via co-sputtering technique on glass, on metallic fibre-based air filters as well as on cotton textiles. The selected human respiratory viruses are: respiratory syncytial virus (RSV), the human rhinovirus (HRV) and the influenza virus type A (FluVA). The coated air filters show that the nanostructured coating develops a strong virucidal activity against RSV and FluVA, but not against the HRV.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nanostructured composite coating endowed with antiviral activity against human respiratory viruses deposited on fibre-based air filters

Balagna

Francese

Perero

et al. 2021

Surface and Coatings Technology

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“…Among aramid fibers, Vectran [71] was selected for the construction of high-strength fabrics of the inflatable plug. Vectran is commonly used in aerospace applications where high-strength, high foldability with minimum degradation is required [72][73][74][75][76][77][78][79][80][81][82][83]. Phase 2 provided much useful information regarding deployment and initial inflation characteristics, but it culminated with a failure of the full-scale, single-layer Vectran fabric plug.…”

Section: Results Of Experimental Evaluationsmentioning

confidence: 99%

Large-scale inflatable structures for tunnel protection: a review of the Resilient Tunnel Plug project

Sosa

Thompson

Holter

et al. 2020

J Infrastruct Preserv Resil

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The protection of underground civil infrastructure continues to be a high priority for transportation and transit security agencies. In particular, rail transit tunnels running under bodies of water are susceptible to disruptions due to flooding caused by extraordinary climatic events such as hurricanes or other events resulting from human activities. Several events have taken place in the past decades that have demonstrated the need to mitigate vulnerabilities or, at least, minimize the consequences of catastrophic events. Although it is impossible to prevent all situations that can lead to flooding, damage can be substantially decreased by reducing the area affected by the event. To minimize the effects of an event, a possible approach is to compartmentalize the tunnel system by creating temporary barriers that can contain the propagation of flooding until a more permanent solution can be implemented. One way to create a temporary barrier is by the deployment of a large-scale inflatable structure, also known as an inflatable plug. In such an application, the inflatable structure is prepared for placement, either permanently or temporally, and maintained ready for deployment, inflation, and pressurization when needed. The internal plug pressure imparts a normal force against the tunnel wall surface with the friction between the plug and tunnel surfaces opposing axial movement of the plug. The sealing effectiveness depends on the ability of the inflatable structure to self-deploy and fit, without human intervention, to the intricacies of the perimeter of the conduit being sealed. Primary design constraints include having the plug stowed away from the dynamic envelope of the trains and being able to withhold the pressure of the flooding water. This work presents a compilation of the main aspects of the activities completed for the development of large-scale inflatable structures as part of the Resilient Tunnel Plug (RTP) Project. The main test results and lessons learned are presented to demonstrate the viability of implementing large-scale inflatable plugs for the containment of flooding in rail tunnels systems. Over 400 coupon and specimen tests, 200 reduced scale tests, and 100 full-scale tests were conducted to demonstrate the efficacy of the design of different prototypes over a 10-year research and development project. The culmination of the work was 12 large-scale flooding demonstrations where the inflatable tunnel plug was shown able to be deployed remotely and withstand a simulated flooding event.

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“…[6][7][8][9] However, due to their smooth surface and scarce surface-active groups, TLCP fibers display poor interfacial adhesion with almost all commercially available resins. 10 Thus, the adhesive properties of TLCP fibers with other materials must be improved to enhance the final strength of the composite material.Previously reported methods for increasing TLCP fiber interfacial adhesion include surface coating, [11][12][13]…”

mentioning

confidence: 99%

Effect of 2-phenoxyethanol pre-treatment on structure and adhesion properties of thermotropic liquid crystal polyarylate fibers

Chen

Liu

Sheng

et al. 2021

Textile Research Journal

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This study investigated the surface modification of thermotropic liquid crystal polyarylate (TLCP) fibers by 2-phenoxyethanol pre-treatment, specifically, whether it enhanced their interfacial adhesive properties. The surface chemical compositions and microstructures of both control and 2-phenoxyethanol pre-treated TLCP fibers were characterized by X-ray photoelectron spectroscopy, scanning electron microscopy, and atomic force microscopy. Furthermore, thermal, dyeing, and adhesion properties of both control and 2-phenoxyethanol pre-treated fibers were compared by thermogravimetric analysis, colorimetry, and universal material testing system, respectively. The results indicated that 2-phenoxyethanol pre-treatment increased the surface-anchored oxygen atom amount: the oxygen to carbon atomic ratio at the surface of the TLCP fibers increased from 0.17 to 0.22. However, 2-phenoxyethanol pre-treatment showed almost no effect on the thermal stability and mechanical properties of the TLCP fibers. The peeling strength of the 2-phenoxyethanol pre-treated TLCP fabric was around twice that of the control TLCP fabric.

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Antibacterial nanostructured composite coating on high performance Vectran™ fabric for aerospace structures

Cited by 21 publications

References 41 publications

Nanostructured composite coating endowed with antiviral activity against human respiratory viruses deposited on fibre-based air filters

Nanostructured composite coating endowed with antiviral activity against human respiratory viruses deposited on fibre-based air filters

Large-scale inflatable structures for tunnel protection: a review of the Resilient Tunnel Plug project

Effect of 2-phenoxyethanol pre-treatment on structure and adhesion properties of thermotropic liquid crystal polyarylate fibers

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