High-Performance and Durable Window-Type Air Filter Based on Embedded PVDF-TrFE Nanofibrous Membrane

Area of Science:

• Materials Science
• Environmental Engineering
• Public Health

Background:

• Fine inhalable particulate matter (PM2.5) poses significant global health risks.
• Preventing indoor PM2.5 infiltration requires effective and practical solutions.
• Existing solutions often compromise transparency or durability.

Purpose of the Study:

• To design and fabricate a transparent filtration window for efficient PM2.5 removal.
• To utilize the ferroelectric properties of PVDF-TrFE for electrostatic particulate capture.
• To ensure the filtration window is durable and reusable.

Main Methods:

• Fabrication of a transparent PM2.5 filter using nanofibrous poly(vinylidenefluoride-co-trifluoroethylene) (PVDF-TrFE).
• Characterization of filter transparency (∼80%) and PM2.5 removal efficiency.
• Assessment of filter durability under water cleaning and wind flow (15 m/s).

Main Results:

• Achieved a transparent (∼80%) PVDF-TrFE nanofibrous filter.
• Demonstrated a PM2.5 removal efficiency of 93%, comparable to medical-grade masks.
• Confirmed filter durability, reusability after water cleaning, and structural integrity under high wind flow.

Conclusions:

• Successfully developed a transparent, durable, and highly efficient PM2.5 filtration window.
• The ferroelectric PVDF-TrFE nanofibrous filter offers a viable solution for improving indoor air quality.
• This innovation presents a practical approach to mitigating public health risks associated with airborne pollutants.