[article]
| Titre : |
New material removes airborne droplets |
| Type de document : |
texte imprimé |
| Auteurs : |
Thierry Destruhaut, Auteur |
| Année de publication : |
2021 |
| Article en page(s) : |
p. 25-26 |
| Langues : |
Anglais (eng) |
| Catégories : |
Antimicrobiens
Gouttelettes
Polyméthacrylate de méthyleLe poly(méthacrylate de méthyle) (souvent abrégé en PMMA, de l'anglais Poly(methyl methacrylate)) est un polymère thermoplastique transparent obtenu par polyaddition dont le monomère est le méthacrylate de méthyle (MMA). Ce polymère est plus connu sous son premier nom commercial de Plexiglas (nom déposé), même si le leader global du PMMA est Altuglas International9 du groupe Arkema, sous le nom commercial Altuglas. Il est également vendu sous les noms commerciaux Lucite, Crystalite, Perspex ou Nudec.
Revêtements organiques
Surfaces fonctionnelles
Vernis
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Transparent coating could be painted onto plexiglass barriers and face shields, accordig to Northwestern University researchers who have developed a new transparent material that can capture droplets and aerosols.
Although plexiglass barriers are seemingly everywhere these days — between grocery store lanes, around restaurant tables and towering above office cubicles — they are an imperfect solution to blocking virus transmission.
Instead of capturing virus-laden respiratory droplets and aerosols, plexiglass dividers merely deflect droplets, causing them to bounce away but remain in the air. To enhance the function of these protective barriers, researchers from Northwestern University in Illinois in the US, have developed a new transparent material that can capture droplets and aerosols, effectively removing them from air.
The material is a clear, viscous liquid that can be painted onto any surface, including plastic, glass, wood, metal, stainless steel, concrete and textiles. When droplets collide with the coated surface, they stick to it, get absorbed and dry up. The coating is also compatible with antiviral and antimicrobial materials, so sanitising agents, such as copper, could be added to the formula. |
| Note de contenu : |
- Fig.1 : An illustration of a common scenario of respiratory aerosols generated in a workspace, as wett as environmentat surfaces that could be suitable to transform into functional, droplet-capturing surfaces.
- Fig. 2 : Atthough the coated glass captures more aerosol droplets and retains more sotid residues, it remains haze-free and transparent, compared to the uncoated glass
- Fig. 3 : A 3D image (taken with laser confocal microscopyl, showing crater-like features generated by the captured droplets
- Fig. 4 : Comparison between uncoated and coated plexiglass screens, on the microscale |
| En ligne : |
https://drive.google.com/file/d/1w1WX9D53Pr6jWQLtgFcCfB2y93y9wQNn/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36133 |
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 211, N° 4670 (08/2021) . - p. 25-26
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New material removes airborne droplets in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 211, N° 4670 (08/2021)
