Stereocomplexation-Enhanced Electroactivity of Poly(lactic acid) Nanofibrous Membranes for Long-Term PM Capturing and Remote Respiratory Monitoring

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(9), P. 3554 - 3564

Published: Feb. 1, 2024

Development of poly(lactic acid) (PLA) nanofibrous membranes (NFMs) holds great potential to replace the conventional nondegradable air filters, but is largely thwarted by intrinsically low electroactivity and poor electret properties PLA. Here, highly electroactive PLA NFMs coupling triboelectric nanogenerator (TENG)-based recharging mechanisms are demonstrated for long-term respiratory protection from fine ultrafine particulate matters (PM0.3 PM2.5), as well wireless intelligent monitoring physiological characters. To enhance in situ self-charging NFMs, we proposed a stereocomplexation strategy involving direct electrospinning PLLA/PDLA nanofibers (approaching 500 nm), conferring remarkable promotion phases, dielectric properties, surface (over 10 kV), output (nearly 20 V at humanoid breathing conditions). Benefiting well-tailored morphology features, exhibited high (180 V) excellent filtration performance (96.32% PM2.5 92.09% PM0.3) while providing desirable resistance (only ∼200 Pa even 85 L/min), far surpassing those pristine PLLA counterpart (60 V, 72.92%, 281 Pa, respectively). This was accompanied high-sensitivity vivo cardiorespiratory characters such coughing breathing, essentially arising respiration-triggered distinct TENG mechanisms. Featuring efficient noninvasive monitoring, our biodegradable appealing healthcare real-time monitoring.

Language: Английский

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Electroactive and breathable protective membranes by surface engineering of dielectric nanohybrids at poly(lactic acid) nanofibers with excellent self-sterilization and photothermal properties

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 339, P. 126708 - 126708

Published: Feb. 11, 2024

Language: Английский

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Nanopatterning of beaded poly(lactic acid) nanofibers for highly electroactive, breathable, UV-shielding and antibacterial protective membranes

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 260, P. 129566 - 129566

Published: Jan. 20, 2024

Language: Английский

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Bio-inspired gradient poly(lactic acid) nanofibers for active capturing of PM0.3 and real-time respiratory monitoring

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 474, P. 134781 - 134781

Published: May 31, 2024

Language: Английский

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Hierarchically structured poly(lactic acid) nanofibers by organic–inorganic nanohybridization strategy towards efficient PM removal and respiratory monitoring

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 354, P. 128886 - 128886

Published: July 28, 2024

Language: Английский

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Nanopatterned Electroactive Polylactic Acid Nanofibrous MOFilters for Efficient PM_0.3 Filtration and Bacterial Inhibition

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(40), P. 47145 - 47157

Published: Oct. 2, 2023

Biodegradable polylactic acid (PLA) nanofibrous membranes (NFMs) hold great potential to address the increasing airborne particulate matter (PM) and dramatic accumulation of plastic/microplastic pollution. However, field PLA NFM-based filters is still in its infancy, frequently dwarfed by bottlenecks regarding relatively low surface activity, poor electroactivity, insufficient PM capturing mechanisms. This effort discloses a microwave-assisted approach minute-level synthesis dielectric ZIF-8 nanocrystals with high specific area (over 1012 m2/g) ultrasmall size (∼240 nm), which were intimately anchored onto nanofibers (PLA@ZIF-8) combined "electrospinning-electrospray" strategy. endowed PLA@ZIF-8 NFMs largely increased electroactivity terms elevated coefficient (an increase 202%), (up 5.8 kV), triboelectric properties (output voltage 30.8 V at 10 N, 0.5 Hz). Given profound control over morphology exhibited efficient filtration PM0.3 (97.1%, 85 L/min) decreased air resistance (592.5 Pa), surpassing that pure counterpart (88.4%, 650.9 Pa). was essentially ascribed realization multiple mechanisms for NFMs, including enhanced physical interception, polar interactions, electrostatic adsorption, unique self-charging function triggered airflow vibrations. Moreover, perfect antibacterial performance achieved PLA@ZIF-8, showing ultrahigh inhibition rates 99.9 100% against E. coli S. aureus, respectively. The proposed hierarchical structuring strategy, offering multifunction integration unattainable conventional methods, may facilitate development biodegradable long-term filters.

Language: Английский

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Biodegradable Electroactive Nanofibrous Air Filters for Long-Term Respiratory Healthcare and Self-Powered Monitoring

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(31), P. 37580 - 37592

Published: July 25, 2023

The concept of triboelectric nanogenerator (TENG)-based fibrous air filters, in which the electroactive fibers are ready to enhance electrostatic adsorption by sustainable energy harvesting, is appealing for long-term respiratory protection and vivo real-time monitoring. This effort discloses a self-reinforcing electroactivity strategy confer extreme alignment refinement electrospun poly(lactic acid) (PLA) nanofibers, significantly facilitating formation phases (i.e., β-phase highly aligned chains dipoles) promotion polarization electret properties. It endowed PLA nanofibrous membranes (NFMs) with largely increased surface potential filtration performance, as exemplified efficient removal PM0.3 PM2.5 (90.68 99.82%, respectively) even at highest airflow capacity 85 L/min. With high well-controlled morphology, NFMs exhibited superior TENG properties triggered regular vibrations, enabling 9.21-fold increase (-1.43 kV) nearly 68% capturing (94.3%) compared those conventional membranes. remarkable mechanisms were examined elaborately monitor personal respiration characteristics, particularly large rapid variations output voltages like coughing tachypnea. Featuring desirable biocompatibility degradability, self-powered permit promising applications fabrication ecofriendly filters toward high-performance purification intelligent

Language: Английский

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A review on recent trends of the antibacterial nonwovens air filter materials: Classification, fabrication, and application

Separation and Purification Technology, Journal Year: 2023, Volume and Issue: 330, P. 125404 - 125404

Published: Oct. 18, 2023

Language: Английский

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Ethyl cellulose/gelatin/β–cyclodextrin/curcumin nanofibrous membrane with antibacterial and formaldehyde adsorbable capabilities for lightweight and high–performance air filtration

International Journal of Biological Macromolecules, Journal Year: 2023, Volume and Issue: 254, P. 127862 - 127862

Published: Nov. 7, 2023

Language: Английский

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Multi-Protection from Microbial and PM Pollutants by Humidity-Resistant, Breathable and Self-Charging Nanofibrous Membranes

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(32), P. 12216 - 12225

Published: July 5, 2024

Language: Английский

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