Development of highly oil-absorbent polylactic-acid microfibers with a nanoporous structure via simple one-step centrifugal spinning

Zhang, Linmei; Narita, Chieko; Himeda, Yuki; Honma, Hidekazu; Yamada, Kazutoyo

doi:10.1016/j.seppur.2021.120156

Cited by 22 publications

(19 citation statements)

References 61 publications

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“…Such performance is comparable to commercial 3 M N95 masks yet much lighter in weight . Several studies demonstrated that PLA could be spun into nanofibers via centrifugal spinning ,,, as well; the fiber morphology was found to be influenced by several factors, including the concentration of the polymer solution, rotational speed of the spinneret, and choice of solvents. ,,,, …”

Section: Introductionmentioning

confidence: 77%

“…29 Several studies demonstrated that PLA could be spun into nanofibers via centrifugal spinning 2,30,33,38 as well; the fiber morphology was found to be influenced by several factors, including the concentration of the polymer solution, rotational speed of the spinneret, and choice of solvents. 2,30,33,38,39 Although PLA nanofibers can be fabricated through both electrospinning and centrifugal spinning, there is currently a lack of research on the filtration performance and reusability of centrifugally spun PLA, particularly in relation to fiber morphology. Additionally, a direct comparison between centrifugal spinning and electrospinning regarding filtration performance and reusability has not been conducted.…”

Section: ■ Introductionmentioning

confidence: 99%

“…There has been a growing interest in the utility of renewable polymers as nanofibers, driven by increasing concerns over the environmental impact of single-use plastics. Polylactic acid (PLA) is a biodegradable polymer which has gained attention for its desirable properties in PPE applications. − PLA exhibits excellent mechanical properties, processability, hydrophobicity, and antimicrobial activity, making it an ideal choice for biomedical applications. − PLA-based filters offer a unique advantage over other commercial filters as they can be fully decomposed . Additionally, PLA is derived from plant-based starch, such as corn, wheat, and cassava, making it an environmentally friendly raw material. − Notably, Soo et al investigated decomposition of three-layer PLA respirator; timely decomposition is difficult and requires specific chemical treatment although smaller diameter layer, e.g., melt-blown PLA, degrades more quickly than spunbond PLA due to higher specific surface area .…”

Section: Introductionmentioning

confidence: 99%

“…Polylactic acid (PLA) is a biodegradable polymer which has gained attention for its desirable properties in PPE applications. − PLA exhibits excellent mechanical properties, processability, hydrophobicity, and antimicrobial activity, making it an ideal choice for biomedical applications. − PLA-based filters offer a unique advantage over other commercial filters as they can be fully decomposed . Additionally, PLA is derived from plant-based starch, such as corn, wheat, and cassava, making it an environmentally friendly raw material. − Notably, Soo et al investigated decomposition of three-layer PLA respirator; timely decomposition is difficult and requires specific chemical treatment although smaller diameter layer, e.g., melt-blown PLA, degrades more quickly than spunbond PLA due to higher specific surface area . PLA has already been demonstrated as a viable nanofiber-based filter; Wang et al demonstrated that, by combining “true” nanofiber PLA (diameter ( d ) ∼40 nm) web within a submicron PLA ( d ∼ 200 nm) mat via modified electrospinning, FE close to 99%, pressure drop of 104 Pa, and low basis weight of 0.91 g/m 2 is attained .…”

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: 77%

Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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 products have high porosity and large specific surface area. Using PLA/chloroform solution as the raw material, Zhang et al [94] obtained PLA fiber with uniform nano cells by one-step rotation centrifugal spinning method, followed by conducting steam annealing with three different organic solvents. Finally, the nano porous PLA fiber with high oil absorption capacity of 26.78 g g −1 was produced.…”

Section: Other Methodsmentioning

confidence: 99%

Review on Cell Structure Regulation and Performances Improvement of Porous Poly(Lactic Acid)

Hou

Pan

Zhou

et al. 2023

Macromol. Rapid Commun.

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Recent advances in the cell structure regulation and performances improvement of porous poly(lactic acid) materials (PPMs) are systematically reviewed in this feature article. First, the typical processing methods, including template method, non‐solvent induced phase separation, freeze–drying, and supercritical CO2 foaming, of PPMs are introduced emphatically. Their various cell morphologies by different processing methods are summarized: finger–like, honeycomb–like, fiber–like, through cell, open cell, closed cell, ball–like, and flower–like. Meanwhile, the transformation among different cell morphologies as well as the changes in cell size and cell density, having impact on the performances, is described. Second, the influence of stereo–complex crystals on the cell structure of PPMs is emphatically reviewed. Furthermore, the relationships between cell structure and properties that includes mechanical properties, thermal stability, heat insulation, and hydrophobicity, are elaborated. Eventually, the issues of PPMs worthy of further study are discussed.

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Preparation and characterization of quaternary bacterial cellulose composites for antimicrobial oil‐absorbing materials

Men,

Yang,

Yang

et al. 2023

J of Applied Polymer Sci

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The treatment of various types of oily wastewater is paramount for environmental protection. Bacterial cellulose (BC) stands out as a highly promising material for oil/water separation, owing to its exceptional mechanical properties and three‐dimensional porous structures. However, excessive hydroxyl groups on BC make it highly hydrophilic, reducing oil absorption and promoting bacterial growth, affecting its stability. To address these challenges, we developed a straightforward in situ polymerization method for the preparation of BC‐DMC composites. The innovation lies in the concurrent enhancement of BC's hydrophobicity and antimicrobial properties only through the addition of 2‐(Methacryloyloxy)ethyltrimethylammonium chloride (DMC), considerably simplifying the synthesis of materials possessing oil‐absorbing and antimicrobial properties. Morphological and structural characterization results confirmed the successful combination of DMC onto BC while maintaining its porous structure. After process parameter optimization, the BC‐DMC composites exhibited a remarkable increase in contact angle (117.7° compared with pure BC's 19.5°). It also demonstrated excellent oil absorption performance, with maximum capacities exceeding 30 g/g for different oils, maintaining values above 20 g/g even after eight cycles. In addition, the BC‐DMC composites exhibited strong antibacterial activity, with rates of 82.4% against Escherichia coli and 97.5% against Staphylococcus aureus. The antibacterial mechanism of the BC‐DMC composites was also discussed. Our novel BC‐DMC composites provides excellent oil absorption and antibacterial properties, making it highly applicable in the field of oily wastewater treatment and serving as a valuable reference for other researchers.

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Development of highly oil-absorbent polylactic-acid microfibers with a nanoporous structure via simple one-step centrifugal spinning

Cited by 22 publications

References 61 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

Review on Cell Structure Regulation and Performances Improvement of Porous Poly(Lactic Acid)

Preparation and characterization of quaternary bacterial cellulose composites for antimicrobial oil‐absorbing materials

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