This study investigates the microstructure and performance of three common face mask types (reusable, surgical, and N95) using X-ray computed tomography (CT) and infrared (IR) thermal imaging. Quantitative parameters like pore size and fiber length were extracted from 3D images, and image-based modeling simulated droplet permeability. Results show that the N95 mask possesses the smallest average pore diameter (~30 µm) and densest nanoscale fibers, providing superior droplet filtration. Modifications to enhance N95 mask efficacy and breathability are proposed.
Publisher
Communications Materials
Published On
Jun 22, 2021
Authors
Wenjia Du, Francesco Lacoviello, Tacson Fernandez, Rui Loureiro, Daniel J. L. Brett, Paul R. Shearing
Tags
microstructure
face masks
N95
filtration
droplet permeability
thermal imaging
performance
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