Depth filtration of airborne agglomerates using electrospun bio-based polylactide membranes

Selatile, Mantsopa Koena; Ray, Suprakas Sinha; Ojijo, Vincent; Sadiku, Rotimi

doi:10.1016/j.jece.2017.12.070

Cited by 16 publications

(5 citation statements)

References 24 publications

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“…The fine fiber diameter of PLA electrospun mats results in ameliorated surface area for aerosol particles' adsorption on the surface [65]. PLA nanofibrous layer removes the large particle size of aerosols and particulate matter from the substrate's surface, whereas the fine particles are captured deeper inside the close-packed electrospun filter media [66]. The needleless electrospinning technique has emerged as a novel technique for developing industrially scalable nano-fibrous mats for applications in advanced air filter media [67][68][69].…”

Section: Fabrication and Characterization Of Needleless Electrospun L...mentioning

confidence: 99%

Needleless electrospun phytochemicals encapsulated nanofibre based 3-ply biodegradable mask for combating COVID-19 pandemic

Patil

Gore

Prakash

et al. 2021

Chemical Engineering Journal

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Section: Fabrication and Characterization Of Needleless Electrospun L...mentioning

confidence: 99%

Needleless electrospun phytochemicals encapsulated nanofibre based 3-ply biodegradable mask for combating COVID-19 pandemic

Patil

Gore

Prakash

et al. 2021

Chemical Engineering Journal

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“…The filtration efficiency of >99% of the large particles of 12.07 μm was achieved. The filtration efficiency of the smallest titanium dioxide particles with the particle size of 0.095 μm was 92.97% due to their high penetration ability [ 64 ]. Lv et al reported that multifunctional and bio-based nanofiber mats from chitosan-polyvinyl alcohol blended with silica and silver nitrate nanoparticles (CS/PVA@SiO 2 /Ag NPs) have several superior properties, such as high air filtration performance, biological compatibility, and antibacterial properties [ 65 ].…”

Section: Summary Of the Current Air Filtering Materialsmentioning

confidence: 99%

Electrospun Nanofiber Mats for Filtering Applications—Technology, Structure and Materials

2021

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Air pollution is one of the biggest health and environmental problems in the world and a huge threat to human health on a global scale. Due to the great impact of respiratory viral infections, chronic obstructive pulmonary disease, lung cancer, asthma, bronchitis, emphysema, lung disease, and heart disease, respiratory allergies are increasing significantly every year. Because of the special properties of electrospun nanofiber mats, e.g., large surface-to-volume ratio and low basis weight, uniform size, and nanoporous structure, nanofiber mats are the preferred choice for use in large-scale air filtration applications. In this review, we summarize the significant studies on electrospun nanofiber mats for filtration applications, present the electrospinning technology, show the structure and mechanism of air filtration. In addition, an overview of current air filtration materials derived from bio- and synthetic polymers and blends is provided. Apart from this, the use of biopolymers in filtration applications is still relatively new and this field is still under-researched. The application areas of air filtration materials are discussed here and future prospects are summarized in conclusion. In order to develop new effective filtration materials, it is necessary to understand the interaction between technology, materials, and filtration mechanisms, and this study was intended to contribute to this effort.

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“…In short, the filtration efficiency increases when the fiber diameter decreases. A lower penetration of the particles can be found in filters with a significantly small diameter (0.27 µm) [25] due to the increase in surface area. Multi-ayer electrospun fibers (double-PLA) had increased filtration efficiency by about 35% compared to single-layer fibers due to the increase in thickness of the filter medium.…”

Section: Laboratory Test Resultsmentioning

confidence: 99%

Characterization and Filtration Efficiency of Sustainable PLA Fibers Obtained via a Hybrid 3D-Printed/Electrospinning Technique

et al. 2021

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The enormous world demand for personal protective equipment to face the current SARS-CoV-2 epidemic has revealed two main weaknesses. On one hand, centralized production led to an initial shortage of respirators; on the other hand, the world demand for single-use equipment has had a direct and inevitable effect on the environment. Polylactide (PLA) is a biodegradable, biocompatible, and renewable thermoplastic polyester, mainly derived from corn starch. Electrospinning is an established and reproducible method to obtain nano- and microfibrous materials with a simple apparatus, characterized by high air filtration efficiencies. In the present work, we designed and optimized an open-source electrospinning setup, easily realizable with a 3D printer and using components widely available, for the delocalized production of an efficient and sustainable particulate matter filter. Filters were realized on 3D-printed PLA support, on which PLA fibers were subsequently electrospun. NaCl aerosol filtration tests exhibited an efficiency greater than 95% for aerosol having an equivalent diameter greater than 0.3 μm and a fiber diameter comparable to the commercially available FFP2 melt-blown face mask. The particulate entrapped by the filters when operating in real environments (indoors, outdoors, and working scenario) was also investigated, as well as the amount of heavy metals potentially released into the environment after filtration activity.

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Depth filtration of airborne agglomerates using electrospun bio-based polylactide membranes

Cited by 16 publications

References 24 publications

Needleless electrospun phytochemicals encapsulated nanofibre based 3-ply biodegradable mask for combating COVID-19 pandemic

Needleless electrospun phytochemicals encapsulated nanofibre based 3-ply biodegradable mask for combating COVID-19 pandemic

Electrospun Nanofiber Mats for Filtering Applications—Technology, Structure and Materials

Characterization and Filtration Efficiency of Sustainable PLA Fibers Obtained via a Hybrid 3D-Printed/Electrospinning Technique

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