Blend-based fibers produced<i>via</i>centrifugal spinning and electrospinning processes: Physical and rheological properties

Muniz, Nathália Oderich; Vechietti, Fernanda Albrecht; Anesi, Guilherme R.; Guinea, Gustavo V.; Santos, Luís Alberto Loureiro dos

doi:10.1557/jmr.2020.189

Cited by 12 publications

(3 citation statements)

References 76 publications

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“…Accordingly, electrospun nanofibers have found applications in air and water filtration membranes. 15,16 However, electrospinning faces challenges in terms of scalability, especially at a lab-scale, 17,18 although industrialscale production has been enabled recently, e.g., wire-based electrospinning. 44 Additionally, the high-voltage electrical hazards associated with electrospinning pose safety concerns.…”

Section: ■ Introductionmentioning

confidence: 99%

“…However, electrospinning faces challenges in terms of scalability, especially at a lab-scale, , although industrial-scale production has been enabled recently, e.g., wire-based electrospinning . Additionally, the high-voltage electrical hazards associated with electrospinning pose safety concerns. , A promising alternative approach, centrifugal spinning, has emerged which may address such shortcomings.…”

Section: Introductionmentioning

confidence: 99%

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Comparative Investigation of Electrospun and Centrifugal Spun Polylactic Acid for Filtration Performance and Reusability

Venkataraman,

Shabani,

Joshi

et al. 2023

ACS Appl. Eng. Mater.

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The current study compares two methods of producing nanofiber filters using a well-known biodegradable polymer, e.g., polylactic acid (PLA): centrifugal spinning and electrospinning. Both centrifugal spinning and electrospinning techniques successfully yielded submicron fibers capable of filtering close to 99% of 0.3 μm NaCl particles; however, current investigation revealed that the centrifugal spun PLA filters yielded a wider distribution of diameters within a mat, which proved beneficial in achieving a significantly lower pressure drop of 200 Pa or less. The quality factor of CS samples is consistently higher than ES samples at comparable aerial mass or mean fiber diameter. What sets CS PLA filters further apart is their remarkable reusability; filter performance through 10 cycles of either isopropyl alcohol spraying or ethanol dipping yielded retention of filtration efficiency ≥95% while maintaining pressure drop in 270 Pa or lower, comfortably conforming to NIOSH N95 standard after treatment. This is in contrast to ES samples which yielded a pressure drop above 343 Pa after 10 cycles of spraying or dipping. The quality factor, filtration efficiency, and pressure drop of CS PLA are collectively comparable or better than most existing nanofiber-based filters while being comparable to meltblown N95 with an added benefit of reusability. By mitigating the challenges associated with single-use filters, such as waste management concerns, these filters can pave the way for a sustainable future in the field of PPE.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparative Investigation of Electrospun and Centrifugal Spun Polylactic Acid for Filtration Performance and Reusability

Venkataraman,

Shabani,

Joshi

et al. 2023

ACS Appl. Eng. Mater.

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“…An alternative approach to enhancing fiber mat specific surface area is to incorporate a pore structure into the fibers. Previously reported approaches to produce porous fibers have exclusively relied on electrospinning and centrifugal spinning. − For example, Doan et al and Lu et al spun fibers from a polymer solution comprising a volatile solvent ( e.g ., polystyrene dissolved in dimethylformamide or tetrahydrofuran) under conditions that induced rapid solvent evaporation to achieve porous fibers. The pore formation was attributed to a combination of vapor-induced phase separation (VIPS) and formation of breath figures by water vapor condensation due to evaporative cooling during fiber spinning. , Another approach by Grena et al involves thermally-induced phase separation (TIPS) of a polyvinylidene fluoride dissolved in propylene carbonate at 150 °C upon cooling below the upper critical solution temperature during thermal drawing from a heated reservoir .…”

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confidence: 99%

Porous Fibers Templated by Melt Blowing Cocontinuous Immiscible Polymer Blends

et al. 2021

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We report a scalable melt blowing method for producing porous nonwoven fibers from model cocontinuous polystyrene/high-density polyethylene polymer blends. While conventional melt compounding of cocontinuous blends typically produces domain sizes ∼1–10 μm, melt blowing these blends into fibers reduces those dimensions up to 35-fold and generates an interpenetrating domain structure. Inclusion of ≤1 wt % of a block copolymer compatibilizer in these blends crucially enables access to smaller domain sizes in the fibers by minimizing thermodynamically-driven blend coarsening inherent to cocontinuous blends. Selective solvent extraction of the sacrificial polymer phase yielded a network of porous channels within the fibers. Fiber surfaces also exhibited pores that percolate into the fiber interior, signifying the continuous and interconnected nature of the final structure. Pore sizes as small as ∼100 nm were obtained, suggesting potential applications of these porous nonwovens that rely on their high surface areas, including various filtration modules.

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Gelatin films from wastes: A review of production, characterization, and application trends in food preservation and agriculture

Rigueto¹,

Rosseto²,

Alessandretti³

et al. 2022

Food Research International

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Blend-based fibers producedviacentrifugal spinning and electrospinning processes: Physical and rheological properties

Abstract: Abstract

Cited by 12 publications

References 76 publications

Comparative Investigation of Electrospun and Centrifugal Spun Polylactic Acid for Filtration Performance and Reusability

Comparative Investigation of Electrospun and Centrifugal Spun Polylactic Acid for Filtration Performance and Reusability

Porous Fibers Templated by Melt Blowing Cocontinuous Immiscible Polymer Blends

Gelatin films from wastes: A review of production, characterization, and application trends in food preservation and agriculture

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