Related Experiment Video
Updated: Jun 29, 2025
09:51
Air Filter Devices Including Nonwoven Meshes of Electrospun Recombinant Spider Silk Proteins
Published on: May 8, 2013
16.2K
Radiative Thermal Management in Face Masks with a Micro/Nanofibrous Filter
Yuanqiang Xu1, Xiaomin Zhang1, Tienan Zhao1
1Shanghai Frontiers Science Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai 201620, China.
Nano Letters
|April 4, 2024
Summary
New face masks use radiative thermal management for improved comfort. They effectively filter fine particulate matter (PM0.3) while offering cooling or warming effects, enhancing user experience.
Area of Science:
- Materials Science
- Textile Engineering
- Thermal Management
Background:
- Micro/nanofiber face masks are crucial personal protective equipment (PPE) for filtering particulate matter (PM), particularly PM0.3.
- User comfort, specifically thermal comfort, is a significant challenge for frequently used face masks.
- Existing face masks often lack effective thermal regulation, leading to discomfort during prolonged wear.
Purpose of the Study:
- To introduce radiative thermal management into micro/nanofiber face masks to enhance user thermal comfort.
- To develop face masks capable of both effective particulate matter filtration and active thermal regulation (cooling or warming).
- To evaluate the thermal performance of the developed face masks through skin temperature measurements.
Main Methods:
- Fabrication of an interlayered poly(lactic acid) (PLA) micro/nanofibrous filter for PM0.3 capture.
- Integration of materials with varying mid-infrared (MIR) emissivity for radiative thermal management: high emissivity cotton for cooling, low emissivity Al/PE films for warming.
- Experimental measurement of skin temperature under the cooling and warming face masks compared to a standard mask.
Main Results:
- The PLA micro/nanofibrous filter demonstrated high PM0.3 capture efficiency (99.69%) with a low pressure drop (49 Pa).
- Cooling masks achieved high MIR emissivity (90.7%), leading to a potential 1.1 °C reduction in skin temperature compared to a 3M mask.
- Warming masks achieved low MIR emissivity (10.7%), resulting in a potential 1.3 °C increase in skin temperature compared to a 3M mask.
Conclusions:
- Radiative thermal management is a viable strategy for enhancing thermal comfort in micro/nanofiber face masks.
- The developed face masks offer effective PM0.3 filtration alongside personalized thermal regulation capabilities.
- These advanced face masks hold promise for improving user comfort and compliance in various environmental conditions.
