Conjugated electrospinning toward a dual conductive network Janus-shaped microfiber array film with enhanced green luminescence and high aeolotropic conduction

Hu, Yaolin; Qi, Haina; Ma, Qianli; Yang, Liu; Shao, Hong; Sheng, Yuqi; Xie, Yunrui; Yu, Wensheng; Li, Dan; Dong, Xiangting

doi:10.1039/d2qm00837h

Cited by 11 publications

(1 citation statement)

References 49 publications

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“…13 Moreover, part of the electrospun fibers was probably dissolved before curing to form microscale conjugated fibers, and the other part formed nanoscale individual fibers, which were conjugated into microsized coarse fibers. 31,32 As shown in Figure 2e−h, nano−micro bimodal fibers of pure PLA and HABE-modified PLA membranes by parallel spinning illustrated that the average diameter of fibers decreased significantly with the addition of HABE. Interestingly, the fiber diameter in pure PLA was mainly centered at 778 nm and 1.52 μm, while the HABE-modified PLA fell into the decreased average diameters of 689, 577, and 625 nm for the nanosized single fibers in PLA/HABE10, PLA/HABE20, and PLA/ HABE30, respectively.…”

Section: ■ Results and Discussionmentioning

confidence: 89%

Bioelectrets in Electrospun Bimodal Poly(lactic acid) Fibers: Realization of Multiple Mechanisms for Efficient and Long-Term Filtration of Fine PMs

Tang

Jiang

Wang

et al. 2023

ACS Appl. Mater. Interfaces

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Despite the great potential in fabrication of biodegradable and eco-friendly air filters by electrospinning poly(lactic acid) (PLA) membranes, the filtering performance is frequently dwarfed by inadequate physical sieving or electrostatic adsorption mechanisms to capture airborne particulate matters (PMs). Here, using the parallel spinning approach, the unique micro/nanoscale architecture was established by conjugation of neighboring PLA nanofibers, creating bimodal fibers in electrospun PLA membranes for the enhanced slip effect to significantly reduce the air resistance. Moreover, the bone-like nanocrystalline hydroxyapatite bioelectret (HABE) was exploited to enhance the dielectric and polarization properties of electrospun PLA, accompanied by the controlled generation of junctions induced by the microaggregation of HABE (10–30 wt %). The incorporated HABE was supposed to orderly align in the applied E-field and largely promote the charging capability and surface potential, gradually increasing to 7.2 kV from the lowest level of 2.5 kV for pure PLA. This was mainly attributed to HABE-induced orientation of PLA backbone chains and CO dipoles, as well as the interfacial charges trapped at the interphases of HABE–PLA and crystalline region–amorphous PLA. Given the multiple capturing mechanisms, the micro/nanostructured PLA/HABE membranes were characterized by excellent and sustainable filtering performance, e.g., the filtration efficiency of PM0.3 was promoted from 59.38% for pure PLA to 94.38% after addition of 30 wt % HABE at a moderate airflow capacity of 32 L/min and from 30.78 to 83.75% at the highest level of 85 L/min. It is of interest that the pressure drop was significantly decreased, mainly arising from the slip effect between the ultrafine nanofibers and conjugated microfibers. The proposed combination of the nanostructured electret and the multistructuring strategy offers the function integration of efficient filtration and low resistance that are highly useful to pursue fully biodegradable filters.

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Section: ■ Results and Discussionmentioning

confidence: 89%

Bioelectrets in Electrospun Bimodal Poly(lactic acid) Fibers: Realization of Multiple Mechanisms for Efficient and Long-Term Filtration of Fine PMs

Tang

Jiang

Wang

et al. 2023

ACS Appl. Mater. Interfaces

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Dye-assisted bicomponent spun nanofibers toward PDLC electro-optical properties modulation and controlled patterning display

Lin,

Zhao,

et al. 2024

Applied Materials Today

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Electrospun Janus film: Innovative design of “macro + micro” to achieve thermochromic-anisotropic conductive-fluorescent tri-functionality

Lv,

Sheng,

Xie

et al. 2024

Chemical Engineering Journal

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Conjugated electrospinning toward a dual conductive network Janus-shaped microfiber array film with enhanced green luminescence and high aeolotropic conduction

Abstract: Fluorescent anisotropic conductive Janus-shaped microfiber array film with a dual conductive network is designed and prepared by a conjugated electrospinning method.

Cited by 11 publications

References 49 publications

Bioelectrets in Electrospun Bimodal Poly(lactic acid) Fibers: Realization of Multiple Mechanisms for Efficient and Long-Term Filtration of Fine PMs

Bioelectrets in Electrospun Bimodal Poly(lactic acid) Fibers: Realization of Multiple Mechanisms for Efficient and Long-Term Filtration of Fine PMs

Dye-assisted bicomponent spun nanofibers toward PDLC electro-optical properties modulation and controlled patterning display

Electrospun Janus film: Innovative design of “macro + micro” to achieve thermochromic-anisotropic conductive-fluorescent tri-functionality

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