Cellulose nanowhiskers decorated with silver nanoparticles as an additive to antibacterial polymers membranes fabricated by electrospinning

Spagnol, Cristiane; Fragal, Elizângela H.; Pereira, Antonio G.B.; Nakamura, Celso V.; Muniz, Edvani C.; Follmann, Heveline D.M.; Rubira, Adley F.

doi:10.1016/j.jcis.2018.07.096

Cited by 60 publications

(25 citation statements)

References 53 publications

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“…For gloves, some products, based on silver nanoparticles, are available and are sold for their antibacterial effects. However, the system may also have a potential for virus protection, as studies have shown that silver nanoparticles also have viricidal activity [71,91,99].…”

Section: Development Of Nanomaterials For Ppementioning

confidence: 99%

“…However, there are many issues regarding the availability and appropriateness of PPE products, for example facemasks not fitting properly or not suitable for restricting airborne viral particles [ 87 , 88 ]. Nanotechnology is offering new materials that are more comfortable, resistant, and safer means for protection against biological and chemical risks [ 87 , 89 – 91 ]. Facemasks, lab or medical aprons and others have been nanoengineered to provide new functions, for instance, hydrophobicity and antimicrobial activity without affecting the material’s texture or breathability [ 90 , 91 ].…”

Section: Nanotechnology Strategies For Disinfection Of Surfaces and Pmentioning

confidence: 99%

“…Nanotechnology is offering new materials that are more comfortable, resistant, and safer means for protection against biological and chemical risks [ 87 , 89 – 91 ]. Facemasks, lab or medical aprons and others have been nanoengineered to provide new functions, for instance, hydrophobicity and antimicrobial activity without affecting the material’s texture or breathability [ 90 , 91 ]. The hydrophobicity of PPE products can provide an effective barrier on its own against airborne droplets emitted during coughing or sneezing.…”

Section: Nanotechnology Strategies For Disinfection Of Surfaces and Pmentioning

confidence: 99%

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How can nanotechnology help to combat COVID-19? Opportunities and urgent need

et al. 2020

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Incidents of viral outbreaks have increased at an alarming rate over the past decades. The most recent human coronavirus known as COVID-19 (SARS-CoV-2) has already spread around the world and shown R 0 values from 2.2 to 2.68. However, the ratio between mortality and number of infections seems to be lower in this case in comparison to other human coronaviruses (such as severe acute respiratory syndrome coronavirus (SARS-CoV) and Middle East respiratory syndrome coronavirus (MERS-CoV)). These outbreaks have tested the limits of healthcare systems and have posed serious questions about management using conventional therapies and diagnostic tools. In this regard, the use of nanotechnology offers new opportunities for the development of novel strategies in terms of prevention, diagnosis and treatment of COVID-19 and other viral infections. In this review, we discuss the use of nanotechnology for COVID-19 virus management by the development of nano-based materials, such as disinfectants, personal protective equipment, diagnostic systems and nanocarrier systems, for treatments and vaccine development, as well as the challenges and drawbacks that need addressing.

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Section: Development Of Nanomaterials For Ppementioning

confidence: 99%

Section: Nanotechnology Strategies For Disinfection Of Surfaces and Pmentioning

confidence: 99%

Section: Nanotechnology Strategies For Disinfection Of Surfaces and Pmentioning

confidence: 99%

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How can nanotechnology help to combat COVID-19? Opportunities and urgent need

et al. 2020

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“…Although these systems exhibited only antimicrobial activity nearly 1.6 times higher than that of AgNP 30 /CS‐coated PP film, the former contains a higher content of loaded AgNP. In addition, other authors registered poorer antimicrobial activity for their AgNP‐coated films than that found for the AgNP 30 /CS‐coated PP film . Finally, it is worth mentioning that Kuorwel et al .…”

Section: Resultsmentioning

confidence: 85%

Original antifouling strategy: Polypropylene films modified with chitosan‐coated silver nanoparticles

Mosconi

Stragliotto

Slenk

et al. 2019

J of Applied Polymer Sci

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A new coating strategy of polypropylene (PP) films with silver nanoparticles (AgNPs) is proposed to obtain surfaces with antifouling properties. As a first step, the photograft polymerization is used to produce polyacrylic acid-grafted PP (PAA-grafted PP) films. A green AgNP synthesis is used by thermal reduction of AgNO 3 with amino groups of chitosan (CS), which controls ion diffusion and stabilizes nanoparticles. AgNP/CS complexes are adsorbed on PAA-grafted PP by electrostatic interactions, yielding AgNP/CS-coated PP films. These films show an excellent antimicrobial activity, even for AgNP contents as low as 0.08 wt %, reducing more than 4 log units in the viable Staphylococcus aureus concentration or inducing Escherichia coli death. This trend is consistent with an adequate amount of small AgNP adsorbed in an organized manner within a thin surface layer. Therefore, the antimicrobial activity of this film seems to be more than promising, used as an active surface for a wide range of applications.A suitable combination of a natural and a synthetic polymer improves the properties of the resulting material, which expands its application field. This methodology of synthesis has proved to be appropriate in areas such as biomedical materials, controlled Additional Supporting Information may be found in the online version of this article.

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“…The possibility of producing different types of nanofiber wires, able of a magnetically induced giant relative deformation, is very promising in view of their functionalization in those conditions where the filiform structure can lead to advantages. In fact, on the basis of recent bibliography, MENWs development seems to open renewals and finalizations for biomedical applications [43][44][45][46], sensing devices [47][48][49][50], electromagnetic components [51,52], absorbers [53,54], tissue engineering [7,55,56] and, in particular, to biocompatible components sensitive to external stimuli in order to regenerate or to activate the contraction and dilatation of tendons and muscles that have lost their functionality [57][58][59][60][61].…”

Section: Aligning and Strain Effects Of Magnetization In Menwsmentioning

confidence: 99%

Elastomagnetic nanofiber wires by magnetic field assisted electrospinning

Guarino¹,

Iannotti²,

Ausanio³

et al. 2019

Express Polym. Lett.

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Magnetic field assisted electrospinning is supplemented by conductive sheets that envelop the magnets and have the same potential as the deposition electrode. By optimizing the experimental conditions, it is possible to produce wires made of polymer nanofibers that incorporate longitudinally oriented magnetic particles. The morphological and magnetic characterizations confirm the preferential orientations. The new nanofiber wires are easily aligned along the maximum intensity line of the applied magnetic field. Moreover, the nanostructured wires have high longitudinal elastomagnetic strain and high transversal deflection as a response to magnetic field stimuli. Therefore, these new threadlike aggregates of magnetic nanofibers could be very appealing for application in all microelectronic or biomedical devices whose functionality requires orientation or deformation.

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Cellulose nanowhiskers decorated with silver nanoparticles as an additive to antibacterial polymers membranes fabricated by electrospinning

Cited by 60 publications

References 53 publications

How can nanotechnology help to combat COVID-19? Opportunities and urgent need

How can nanotechnology help to combat COVID-19? Opportunities and urgent need

Original antifouling strategy: Polypropylene films modified with chitosan‐coated silver nanoparticles

Elastomagnetic nanofiber wires by magnetic field assisted electrospinning

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