Graphene nanoplatelets composite membranes for thermal comfort enhancement in performance textiles

Bonetti, Lorenzo; Fiorati, Andrea; Serafini, Andrea; Masotti, Guido; Tana, Francesca; D’Agostino, Agnese; Draghi, Lorenza; Altomare, Lina; Chiesa, Roberto; Farè, Silvia; Bianchi, Massimiliano; Rizzi, Laura Giorgia; Nardo, Luigi De

doi:10.1002/app.49645

Cited by 15 publications

(12 citation statements)

References 55 publications

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“…Commercial materials were used to ensure consistency between experiments. G+ is produced according to a proprietary patented technology that involves three different steps: expansion, exfoliation, and drying (Bonetti et al, 2021). GO water dispersion (4 mg/mL) synthesis was performed using the Hummers' method (Wang et al, 2016).…”

Section: Methods Detailsmentioning

confidence: 99%

Graphene nanoplatelet and graphene oxide functionalization of face mask materials inhibits infectivity of trapped SARS-CoV-2

et al. 2021

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Recent advancements in bidimensional nanoparticles production such as Graphene (G) and Graphene oxide (GO) have the potential to meet the need for highly functional personal protective equipment (PPE) against SARS-CoV-2 infection. The ability of G and GO to interact with microorganisms provides an opportunity to develop engineered textiles for use in PPE and limit the spread of COVID-19. PPE in current use in high-risk settings for COVID transmission provide only a physical barrier that decreases infection likelihood and does not inactivate the virus. Here, we show that virus pre-incubation with soluble GO inhibits SARS-CoV-2 infection of VERO cells. Furthermore, when G/GO functionalized polyurethane or cotton were in contact SARS-CoV-2, the infectivity of the fabric was nearly completely inhibited. The findings presented here constitute an important innovative nanomaterial-based strategy to significantly increase PPE efficacy in protection against the SARS-CoV-2 virus that may implement water filtration, air purification, and diagnostics methods.

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Section: Methods Detailsmentioning

confidence: 99%

Graphene nanoplatelet and graphene oxide functionalization of face mask materials inhibits infectivity of trapped SARS-CoV-2

et al. 2021

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“…Commercial materials were used to ensure consistency between experiments. G+ is produced according to a proprietary patented technology that involves three different steps: expansion, exfoliation, and drying ( 38 ). GO water dispersion (4 mg/mL) synthesis was performed using the Hummers’ method ( 39 ).…”

Section: Methodsmentioning

confidence: 99%

Graphene nanoplatelet and Graphene oxide functionalization of face mask materials inhibits infectivity of trapped SARS-CoV-2

Maio

Palmieri

Babini

et al. 2020

Preprint

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Recent advancements in bidimensional nanoparticles such as Graphene nanoplatelets (G) and the derivative Graphene oxide (GO) have the potential to meet the need for highly functional personal protective equipment (PPE) that confers increased protection against SARS-CoV-2 infection and the spread COVID-19. The ability of G and GO to interact with and bind microorganisms as well as RNA and DNA provides an opportunity to develop engineered textiles for use in PPE. The face masks widely used in health care and other high-risk settings for COVID transmission provide only a physical barrier that decreases likelihood of infection and do not inactivate the virus. Here, we show pre-incubation of viral particles with free GO inhibits SARS-CoV-2 infection of VERO cells. Highly relevant to PPE materials, when either polyurethane or cotton material was loaded with G or GO and culture medium containing SARS-CoV-2 viral particles either filtered through or incubated with the functionalized materials, the infectivity of the medium was nearly completely inhibited. The findings presented here constitute an important nanomaterials-based strategy to significantly increase face mask and other PPE efficacy in protection against the SARS-CoV-2 virus and COVID-19 that may be applicable to additional anti-SARS-CoV-2 measures including water filtration, air purification, and diagnostics.

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“…This physical-mechanical exfoliation method permits the liquid dispersion of GNPs at a concentration of 200 g/L in a water solution, explained in detail in a patent [22]. The resulting GNPs are characterized by a high aspect ratio (length to thickness > 1000), lateral dimensions < 1-2 µm, and thickness typically below 3 nm) [23].…”

Section: Methodsmentioning

confidence: 99%

PET Foams Surface Treated with Graphene Nanoplatelets: Evaluation of Thermal Resistance and Flame Retardancy

Matta

Rizzi²,

Frache

2021

Polymers

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In this work, fire-retardant systems consisting of graphene nanoplatelets (GNPs) and dispersant agents were designed and applied on polyethylene terephthalate (PET) foam. Manual deposition from three different liquid solutions was performed in order to create a protective coating on the specimen’s surface. A very low amount of coating, between 1.5 and 3.5 wt%, was chosen for the preparation of coated samples. Flammability, flame penetration, and combustion tests demonstrated the improvement provided to the foam via coating. In particular, specimens with PSS/GNPs coating, compared to neat foam, were able to interrupt the flame during horizontal and vertical flammability tests and led to longer endurance times during the flame penetration test. Furthermore, during cone calorimetry tests, the time to ignition (TTI) increased and the peak of heat release rate (pHRR) was drastically reduced by up to 60% compared to that of the uncoated PET foam. Finally, ageing for 48 and 115 h at 160 °C was performed on coated specimens to evaluate the effect on flammability and combustion behavior. Scanning electron microscopy (SEM) images proved the morphological effect of the heat treatment on the surface, showing that the coating was uniformly distributed. In this case, fire-retardant properties were enhanced, even if fewer GNPs were used.

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Graphene nanoplatelets composite membranes for thermal comfort enhancement in performance textiles

Cited by 15 publications

References 55 publications

Graphene nanoplatelet and graphene oxide functionalization of face mask materials inhibits infectivity of trapped SARS-CoV-2

Graphene nanoplatelet and graphene oxide functionalization of face mask materials inhibits infectivity of trapped SARS-CoV-2

Graphene nanoplatelet and Graphene oxide functionalization of face mask materials inhibits infectivity of trapped SARS-CoV-2

PET Foams Surface Treated with Graphene Nanoplatelets: Evaluation of Thermal Resistance and Flame Retardancy

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