Role of Fluorine Addition in Oxygen Plasmas for the Disinfection of Respirator Fabrics

Plasma Processes and Polymers, Год журнала: 2025, Номер unknown

Опубликована: Март 23, 2025

ABSTRACT This study investigated the potential of using low‐pressure plasmas for disinfection N95 respirator fabrics, employing mixtures oxygen and sulfur hexafluoride (SF₆). The proportion SF₆ introduced into plasma was varied from 0% to 100%, with correspondingly reduced. Plasma ignited by applying a radiofrequency signal lower electrode grounding upper electrode. Treatments were conducted in both electrodes. structural integrity fibers preserved following treatment. Complete fabric sterilization achieved under various treatment conditions, minimal alteration their physicochemical properties no cytotoxic effects. These results suggest that this approach may offer promising new route disinfection.

Язык: Английский

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Fabrication of multilayer superhydrophobic and biodegradable filters through electrospinning and electrospraying of PHA-SiO2 biopolymer composites

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 162466 - 162466

Опубликована: Апрель 1, 2025

Язык: Английский

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Improving Sand–Bentonite Hydromechanical Performance With Shredded Facemask and Colloidal Nanosilica

Advances in Civil Engineering, Год журнала: 2025, Номер 2025(1)

Опубликована: Янв. 1, 2025

Sand–bentonite (SB) serves a crucial role as landfill liner for waste containment and environmental protection. However, the challenge of insufficient strength in SB liners poses risks failure hazardous substance release. To address this, our study introduces an innovative approach by incorporating shredded facemask (FM) colloidal nanosilica (CN) to investigate their combined effects on enhancing hydromechanical performance mixtures. The research encompassed wide range tests, such unconfined compressive (UCS), free swell, 1D consolidation, 3D volumetric shrinkage tests. explore geochemical compositions microstructures both untreated treated samples, microstructural analysis techniques were utilized, including X‐ray fluorescence, diffraction, Fourier‐transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM). Results show that inclusion FM improves dilative behavior, with even more significant enhancement observed upon CN treatment. Optimal increases UCS 167% 194% achieved after treating 0.5% 15% 10% bentonite contents 28 days, respectively. Furthermore, notable improvements also swelling control, strains, limits. Additionally, met prescribed benchmarks hydraulic conductivity adhered generally accepted minimum criteria soil liners. Finally, FTIR SEM analyses confirmed improved interlocking between particles viscous gels formation, leading enhanced performance. findings offer perspectives into FM‐CN‐treated introduce featuring robust design, contributing efficient environmentally friendly practices treatment SB.

Язык: Английский

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Sustainable Composites from Microcrystalline Cellulose and Cellulose Acetate: 3D Printing and Performance Optimization

Composites Part C Open Access, Год журнала: 2025, Номер unknown, С. 100606 - 100606

Опубликована: Май 1, 2025

Язык: Английский

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Comparison of PLA/PBAT Electrospun Layer and Commercial PP Facemask Layer: Morphology, Diameter and Tensile Strength

World sustainability series, Год журнала: 2025, Номер unknown, С. 329 - 343

Опубликована: Янв. 1, 2025

Язык: Английский

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