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Updated: Oct 20, 2025
Multiscale Structures Aggregated by Imprinted Nanofibers for Functional Surfaces
Published on: September 11, 2018
High-performance anti-haze window screen based on multiscale structured polyvinylidene fluoride nanofibers
Junpeng Xiong1, Weili Shao1, Ling Wang1
1Textile and Garment Industry of Research Institute, Zhongyuan University of Technology, Zhengzhou 450007, People's Republic of China; International Joint Laboratory of New Textile Materials and Textiles of Henan Province, Zhengzhou 450007, People's Republic of China.
Researchers developed a transparent air filter using polyvinylidene fluoride nanofibers to improve indoor air quality. This innovative filter effectively captures particulate matter while maintaining high transparency and low air resistance.
Area of Science:
- Materials Science
- Environmental Engineering
- Nanotechnology
Background:
- Indoor air quality (IAQ) is crucial due to increased time spent indoors and particulate matter (PM) pollution.
- Existing window air filters often compromise filtration efficiency, transparency, and air permeability.
- Natural ventilation is desirable but requires effective filtration of outdoor pollutants.
Purpose of the Study:
- To fabricate a high-performance transparent air filter for improving IAQ during natural ventilation.
- To address the limitations of current air filters by balancing filtration, transparency, and air permeability.
- To develop a novel strategy for creating true-nanoscale diameter nanofibers for advanced filtration.
Main Methods:
- Fabrication of polyvinylidene fluoride (PVDF) superfine nanofibers (SNs) with diameters of 20-35 nm via extremely dilute solution electrospinning.
- Design of a multi-scale nanofiber structure by adjusting the ratio of SNs to PVDF coarse fibers (CNs).
- Characterization of filter performance, including filtration efficiency for PM0.3, air resistance, transparency, and UV stability.
Main Results:
- Achieved high interception efficiency of 99.92% for PM0.3.
- Maintained low air resistance at 69 Pa.
- Exhibited high transparency (approximately 80%) and stable filtration performance after 100 hours of UV irradiation.
- Demonstrated a balanced structure-performance relationship through the multi-scale nanofiber design with small pore size (0.72 μm) and high porosity (92.22%).
Conclusions:
- The developed transparent air filter demonstrates excellent performance in capturing particulate matter while maintaining high transparency and low air resistance.
- The multi-scale nanofiber structure fabricated using PVDF offers a promising strategy for designing advanced air filtration systems.
- This research provides a new method for producing true-nanoscale fibers and high-performance air filters for improved indoor air quality.
