Development of bacterial-resistant electrospun polylactide membrane for air filtration application: Effects of reduction methods and their loadings

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

doi:10.1016/j.polymdegradstab.2020.109205

Cited by 23 publications

(8 citation statements)

References 33 publications

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“…At the instance of the AgNP in the PLA/AgNP, they reported 99.9% reduction in the number of bacteria compared to neat PLA with antibacterial efficacies (ABE) determined against Gram‐negative E. coli and Gram‐positive S. aureus to be 60% and 66.1%, respectively. Selatile et al 95 electrospun PLA containing AgNP to prepare nanocomposite fibers for air filtration application. Electrospinning was adopted to render the silver nanomaterials available for the targeted antimicrobial activity against Gram‐positive Staphylococcus and Gram‐negative Pseudomonas bacteria.…”

Section: Preparation Of Pla Nanocompositesmentioning

confidence: 99%

“…These active ions are transformed into toxic state of reactive oxygen species because of its nano‐dimension and react with the bacteria. At the contact of bacteria membrane by the Ag + ions, the bacteria cell wall is pierced, creating obstructions that disrupt the cell function, thus interfere with the DNA and enzyme activities 95 . In other words, Ag + ions would penetrate the bacteria membrane, then interact with its sulfhydryl group and coagulate its protein leading to blockage of its respiratory pathway, that is, intracellular damage of the bacteria cell wall 132 .…”

Section: Role Of Nanoparticles In Poly(lactic Acid)mentioning

confidence: 99%

“…In other words, Ag + ions would penetrate the bacteria membrane, then interact with its sulfhydryl group and coagulate its protein leading to blockage of its respiratory pathway, that is, intracellular damage of the bacteria cell wall 132 . This mechanism is sustained once there is steady release of the silver ions (Ag + ) by the AgNP 95

2 A g_{(s)} + \frac{1}{2} O_{2 ((), aq)} + 2 H^{+} \leftrightarrow 2 A g_{(italicaq)}^{+} + H_{2} O_{(l)} .

…”

Section: Role Of Nanoparticles In Poly(lactic Acid)mentioning

confidence: 99%

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Effect of rigid nanoparticles and preparation techniques on the performances of poly(lactic acid) nanocomposites: A review

Sanusi

Benelfellah

Bikiaris

et al. 2020

Polymers for Advanced Techs

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The global concern over the environmental protection and bio‐sustainability of plastic waste materials has prompted a vibrant search for renewable and biodegradable polymers in the academia and industrial sectors. Amidst other biopolymers, poly(lactic acid) (PLA) is identified as the most promising thermoplastic aliphatic polyester. PLA is derived from agricultural products with unique physical and mechanical properties that are comparable with the conventional petroleum‐derived polymers. Yet, some of the properties are insufficient for advanced materials applications. Rigid nanoparticles are incorporated in the PLA matrix to alleviate its properties for specific high‐performance applications. Here, we report various approaches of preparing functional PLA nanocomposites with emphasis on the strengths and weaknesses of each of the methods, as well as the achieved properties enhancement for a targeted application. Designing high‐performance PLA nanocomposite involves careful selection of the most appropriate nanofillers or combinations of nanofillers, preparation technique and processing parameters. Besides multi‐walled carbon nanotubes (CNT) and montmorillonite (MMT) that are prominent as nucleating agents to achieve high thermal and mechanical properties, other nanofillers like silver nanoparticles (AgNP) play critical roles in improving antibacterial and high‐performance properties of PLA.

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Section: Preparation Of Pla Nanocompositesmentioning

confidence: 99%

Section: Role Of Nanoparticles In Poly(lactic Acid)mentioning

confidence: 99%

2 A g_{(s)} + \frac{1}{2} O_{2 ((), aq)} + 2 H^{+} \leftrightarrow 2 A g_{(italicaq)}^{+} + H_{2} O_{(l)} .

…”

Section: Role Of Nanoparticles In Poly(lactic Acid)mentioning

confidence: 99%

See 1 more Smart Citation

Effect of rigid nanoparticles and preparation techniques on the performances of poly(lactic acid) nanocomposites: A review

Sanusi

Benelfellah

Bikiaris

et al. 2020

Polymers for Advanced Techs

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“…Third layer of the mask was fabricated using spray coating of herbal phytochemical encapsulated PLA. This was performed to enhance the immune-boosting characteristics via inhalation to the mask wearer [ 31 – 33 ]. Mean thicknesses of the outer to inner layer (four layers) of the mask were found to be 0.28 ± 0.01 mm, 0.13 ± 0.01 mm, 0.13 ± 0.01 mm and 0.21 ± 0.01 mm, respectively.…”

Section: Fabrication Of the Mask Materials And Surface Morphologymentioning

confidence: 99%

Functionalized non-woven surfaces for combating the spread of the COVID-19 pandemic

et al. 2021

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The worldwide outbreak of SARS-CoV-2 infection has necessitated mandatory use of face masks, personal protective equipment and intake of a healthy diet for immunity boosting. As per WHO's recommendation, continuous use of masks has been proven effective in decreasing the SARS-CoV-2 infection rate. The present study reports on the bacterial filtration efficacy (BFE) of a novel 4-ply functionalized non-woven face mask. We synthesized a polypropylene-based fabric with inner layers of melt-blown fine fibres coated with polylactic acid and immune-boosting herbal phytochemicals. Experimental studies on the synthesized face mask demonstrated a BFE of greater than 99% against Staphylococcus aureus (a bacterium species frequently found in mammalian respiratory tract). A thorough computational analysis using LibDock algorithm demonstrated an effective docking performance of herbal phytochemicals against harmful virus structures. More importantly, the face mask also showed sufficient and stable breathability as per regulatory standards. A breathing resistance of 30 Pa at an aerosol flow rate of 30 l h −1 was reported under standard temperature and pressure conditions, indicating a high potential for real-world applications.

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“…While ambient microbial aerosol and droplets can be filtered by the particulate filtration mechanism [ 24 , 129 , 130 , 131 , 132 ], more research attention was drawn to develop antimicrobial filters as a facile protective strategy [ 133 , 134 , 135 , 136 ]. The antimicrobial fibers are commonly based on the bactericidal effect of incorporated agents that disrupt the cell membrane.…”

Section: Multi-functional Filter Developmentmentioning

confidence: 99%

Advanced Design of Fiber-Based Particulate Filters: Materials, Morphology, and Construction of Fibrous Assembly

Jung

Kim

2020

Polymers

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With increasing air pollution and sporadic outbreaks of epidemics, there is ramping attention on the filtration devices. The main constituents of airborne pollutants are particulate matters of solid particles, liquid aerosol, bioaerosol/bio-droplets, and gas/vapor. With the growing demand for high-performance filters, novel materials and functionalities are being developed applying advanced technologies. In this paper, recent developments of fiber-based particulate filters are reviewed, with a focus on the important performance parameters and material properties. Trends in technology and research activities are briefly reviewed, and the evaluative measures of filtration performance are reported. Recent studies on the advanced filter materials are reviewed in the aspect of polymers and the fabrication process of fibrous assembly. The characterization method including 3D modeling and simulation is also briefly introduced. Multifunctional filters such as antimicrobial filter and gas and particulate filters are briefly introduced, and efforts for developing environmentally sustainable filters are noted.

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Development of bacterial-resistant electrospun polylactide membrane for air filtration application: Effects of reduction methods and their loadings

Cited by 23 publications

References 33 publications

Effect of rigid nanoparticles and preparation techniques on the performances of poly(lactic acid) nanocomposites: A review

Effect of rigid nanoparticles and preparation techniques on the performances of poly(lactic acid) nanocomposites: A review

Functionalized non-woven surfaces for combating the spread of the COVID-19 pandemic

Advanced Design of Fiber-Based Particulate Filters: Materials, Morphology, and Construction of Fibrous Assembly

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