Ultralight ethyl cellulose-based electret fiber membrane for low-resistance and high-efficient capture of PM2.5

Pang, Chunxia; Wang, Haijun; Lin, Xiaoyan

doi:10.1016/j.colsurfa.2021.127643

Cited by 13 publications

(8 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When the medium has high dielectric constant, the space charge can be well retained for a long time to form monopolar electrets [82] . At present, space charge electret is realized by adding electret particles (e.g., silicon dioxide (SiO 2 ); titanium dioxide (TiO 2 ); barium titanate (BaTiO 3 ); silicon nitride (Si 3 N 4 ); attapulgite; boehmite; polytetrafluoroethylene (PTFE); hydroxylapatite (HAP)) [79] , [83] , [84] , [85] , [86] , [87] , [88] , [89] , electrospinning nonpolar fibers (e.g., PTFE; polystyrene (PS) and polyvinyl chloride (PVC)) [90] , [91] , [92] , and realizing interface polarization between polar and nonpolar mediums [93] , [94] .…”

Section: Preparation Of Electrospun Nanofibrous Air Filter With High ...mentioning

confidence: 99%

High-performance multifunctional electrospun fibrous air filter for personal protection: A review

Shao

Chen²,

Wang³

et al. 2022

Separation and Purification Technology

View full text Add to dashboard Cite

Section: Preparation Of Electrospun Nanofibrous Air Filter With High ...mentioning

confidence: 99%

High-performance multifunctional electrospun fibrous air filter for personal protection: A review

Shao

Chen²,

Wang³

et al. 2022

Separation and Purification Technology

View full text Add to dashboard Cite

“…Various applications of flexible electro-mechanical conversion devices have received increasing attention on self-powered electronic systems, such as medical health monitoring systems, , sensors, , wearable electronic materials, , micro-electromechanical systems , and flexible circuits. , Compared with other devices, the electrostatic flexible electret piezoelectric material is a kind of self-driving piezoelectric device, which can work without bias voltage. , The key technology of electret is the preparation of charge storage space in the polymer. At present, the most common methods of spatial structure preparation are puffing technology, imprint technology, electrospinning, sol–gel, etc. − However, the current preparation technology has a small storage space and low stability in the polymer, which seriously affects the application of its mechanical and electrical sensing performance and signal monitoring.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Analysis of Microcapsule Electrets with a Tunable Flexoelectric-like Response

Zheng

Wang

Yang

et al. 2023

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

The electret has drawn considerable attention as an emerging flexible energy collector. In this work, a charged microcapsule is designed which can provide a stable storage space for electric charge in the electret. The flexoelectric-like response is achieved by embedding a layer of charged microcapsules in the middle plane of the flexible polymer to form an electret. The results of Fourier transform infrared spectroscopy and energy-dispersive X-ray spectroscopy verified the successful preparation of microcapsules. Zeta potential analysis showed the negative electrical properties of the microcapsules. The prepared microcapsule electret has a significant flexoelectric effect under loading conditions. This work presents a preliminary theoretical study of the microcapsule electret to optimize the output characteristics of the electret by varying the parameters, including the number of microcapsules, the size of the electret, and the external load. Good agreement was achieved with the experimental results, which verified the validity of the theoretical study. This work provides a new method for preparing electret and further promotes its application in electromechanical transducers.

show abstract

“…To solve this concern, alternative polymers that are easily degradable in the ecosystem have been explored to substitute petroleum-based materials . Natural polymers such as cellulose, , lignin, zein, and chitin have been widely studied as filtration media. In air filtration, electrostatic attraction is an important particle capture mechanism; therefore, electrostatic charges are often imposed on the filter media to produce an electret filter .…”

Section: Introductionmentioning

confidence: 99%

“…The porosity (%) of the web was calculated by eq 2, where A is the area of the web (cm 2 ), t is the thickness of the web (cm), ρ is the density of the polymer (g/cm 3 ), and w is the weight (g) of the web in area A.…”

mentioning

confidence: 99%

Environmentally Sustainable Particulate Filter Fabricated via Induced Phase Separation of Bioderived Fungal Chitin and Poly(lactic acid)

Park

et al. 2022

ACS Appl. Polym. Mater.

View full text Add to dashboard Cite

With the increasing demand for filtering face pieces as daily personal protection, inevitable problems associated with filter wastes have been addressed. To mitigate this concern, an eco-friendly alternative filter material is developed using plant-sourced biomaterials, poly(lactic acid) (PLA) and fungal chitin. Heterogeneous electrospun fibers with distinctive chitin-rich and PLA-rich regions are formed by inducing phase separation between hydrophilic chitin and hydrophobic PLA polymers. The PLA and chitin-incorporated PLA (ChPLA) webs are evaluated for filtration performance against NaCl nanoparticles, examining the contribution of mechanical and electrostatic particle capture mechanisms, with and without aging under two different environmental conditions of 40 °C and a 3% relative humidity and 25 °C and a 90% RH. The adverse effect of humid treatment on filtration efficiency is apparent for the ChPLA web, and the loss of overall filtration efficiency is mostly attributed to the reduced electrostatic filtration mechanism, as is evidenced by the decreased surface potential measurement. The ChPLA web displays lower tensile stress than the PLA web, and the mechanical strength is further reduced when ChPLA is exposed to moisture. In the soil burial test, ChPLA shows higher degradability than PLA during 56 days of burial. This research provides practical information to design environmentally sustainable filter media, primarily with biobased polymers, especially shedding light on accelerated biodegradation via induced phase separation.

show abstract

Ultralight ethyl cellulose-based electret fiber membrane for low-resistance and high-efficient capture of PM2.5

Cited by 13 publications

References 49 publications

High-performance multifunctional electrospun fibrous air filter for personal protection: A review

High-performance multifunctional electrospun fibrous air filter for personal protection: A review

Fabrication and Analysis of Microcapsule Electrets with a Tunable Flexoelectric-like Response

Environmentally Sustainable Particulate Filter Fabricated via Induced Phase Separation of Bioderived Fungal Chitin and Poly(lactic acid)

Contact Info

Product

Resources

About