Hydrogel-assisted microfluidic wet spinning of poly(lactic acid) fibers from a green and pro-crystallization spinning dope

Chemical Engineering Journal, Год журнала: 2024, Номер 481, С. 148417 - 148417

Опубликована: Янв. 2, 2024

Poly(lactic acid) (PLA) fibers have found a broad range of applications in medical textiles. While traditional spinning methods usually involve harsh conditions, such as high temperature or toxic organic solvents, the challenges producing PLA via green route are yet to be overcome. Herein, we described new strategy for fiber production, which combines controlled and benign conditions enabled by microfluidics novel dope with bio-sourced CyreneTM non-toxic solvent PLA. This is in-situ formation hydrogel shell around focused PLA/Cyrene™ stream. stabilizes core stream facilitates solidification fiber. Our hydrogel-assisted microfluidic wet (HA-MWS) represents first-ever method that allows continuous room-temperature production highly porous (porosity > 80 %) without need petroleum-based chemicals. We characterized solution properties PLA/CyreneTM discovered can induce crystallization, resultant crystals acting cross-linking centers gelation. then explored process, using flow alginate aqueous achieve production. The resulting underwent comprehensive morphological, structural, mechanical characterization. process enables under mild conditions. More importantly, bio-based pro-crystallization was first time used develop dope, gives rise promising (e.g. porosity), broaden potential biomedical fibers.

Язык: Английский

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Radiative cooling face mask based on mixed micro- and nanofibrous fabric

Chemical Engineering Journal, Год журнала: 2024, Номер 481, С. 148722 - 148722

Опубликована: Янв. 13, 2024

Язык: Английский

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Preparation of PEDOT/Ti3C2Tx/Co3S2 composite for quasi−solid−state hybrid supercapacitor with enhanced electrochemical performance

Journal of Alloys and Compounds, Год журнала: 2024, Номер 980, С. 173609 - 173609

Опубликована: Янв. 26, 2024

Язык: Английский

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Biobased Triesters as Plasticizers for Improved Mechanical and Biodegradable Performance of Polylactic Acid Fibrous Membranes as Facemask Materials

ACS Sustainable Chemistry & Engineering, Год журнала: 2024, Номер 12(20), С. 7964 - 7975

Опубликована: Май 9, 2024

The COVID-19 pandemic has incredibly escalated the use of petroleum-based disposable facemasks, posing a significant environmental burden. In response, polylactide acid (PLA), biobased and biodegradable aliphatic polymer, been considered potential alternative. However, applications PLA in facemask materials are hindered by its inherent brittleness, poor toughness, slow degradation rate environment. Addressing these challenges, this study explored two triesters as green plasticizers to improve fibrous membranes with desired mechanical properties biodegradability. were mixed electrospun into membranes. influence varied contents on filtration efficiency, morphology, thermal behavior, properties, is systematically investigated. findings reveal that proper addition (7% content) not only effectively lowered glass transition cold crystallization temperatures from 65 52 °C 78 70 °C, respectively, without compromising performance but also significantly enhanced material's evidenced increased tensile strength 0.44 1.08 MPa elongation at break 1.32% 12.53%. Furthermore, plasticized exhibited an enzymatic 34.18% 50 after 96 h, more than 2-fold increase compared pure PLA. These advancements work contribute development high-performance eco-friendly materials, offering sustainable solution challenges posed conventional facemasks.

Язык: Английский

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Breath moisture-induced electroactive nanofibrous membrane for efficient antibacterial and antiviral air filtration

Separation and Purification Technology, Год журнала: 2024, Номер 348, С. 127772 - 127772

Опубликована: Май 1, 2024

Язык: Английский

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