Oct 15, 2020 · The bi-component all-polymer electret fibers show enhanced electret property and structural continuity, contributing to a N95 protective respirator with high filtration efficiency (99.752%), low air resistance (72 Pa) and long service life.

Dec 5, 2021 · All-polymer electret EC/PS fibers without nanotoxicity are prepared. Biomass-based electret based on ethyl cellulose as the main raw material increases the environmental friendliness of the material. the fabricated electret fiber has an ultralight base weight.

Herein, we report novel electret nanofibrous membranes with numerous charges and desirable charge stability using polyvinylidene fluoride (PVDF) as the matrix polymer and polytetrafluoroethylene nanoparticles (PTFE NPs) as an inspiring charge enhancer through the in situ charging technology of electrospinning.

Jan 1, 2025 · Prolonged electret filter media with high capturing efficiency is critical, as they are widely used for clean room applications. Given this, the purpose of this chapter is to review the studies pertaining to electrets of varying constructional methodologies and parameters.

Electret filter media are highly charged synthetic non-woven materials that use electrostatic forces to increase particle capture efficiency well beyond the physical pore structure.

Jan 17, 2023 · In this study, we use atomic force microscopy (AFM) to determine the surface topography of the fibres within a commercially available fibre mat, synchrotron wide-angle X-ray diffraction to determine polymer phase composition, and electrostatic force microscopy (EFM) to map the electrostatic interactions over these fibres.

Dec 4, 2023 · Electrospun electret fibers are recognized as a promising candidate for high-performance filter media, especially benefiting from their in-situ charge injection during fiber forming, which can provide attractive electret effect to capture particles.

Today, most electrets are made from synthetic polymers, e.g. fluoropolymers, polypropylene, polyethyleneterephthalate (PET), etc. Real-charge electrets contain either positive or negative excess charges or both, while oriented-dipole electrets contain oriented dipoles.

Oct 8, 2020 · Electrospinning technology is considered to be one of the efficient, convenient, and low-cost technologies for preparing nanofibers, which can be applied in various industries, including filtration, catalysis, and energy.

Feb 14, 2025 · Highly Electrostatic Cellulose Acetate-Based Composite Electret Nanofiber Film for Air Filtration Applications. A highly electrostatic cellulose acetate (CA)-based electret film for air filtration was fabricated by the electrospinning method assisted with the corona charging technique in this work.