Multifunctional Face Mask with Daytime Passive Cooling Based on PVDF/Metal-Organic Framework Hybrid Fabric

Area of Science:

• Materials Science
• Nanotechnology
• Textile Engineering

Background:

• Passive daytime radiative cooling (PDRC) fabrics offer energy-free cooling solutions.
• Multifunctional integration is crucial for practical applications of advanced fabrics.
• Existing PDRC fabrics often lack integrated functionalities.

Purpose of the Study:

• To develop a multifunctional composite fabric with passive cooling, respiratory monitoring, and smoke filtration capabilities.
• To investigate the optical properties of the composite fabric for efficient radiative cooling.
• To evaluate the performance of the fabric in real-world conditions and as a cooling face mask.

Main Methods:

• Fabrication of a composite fabric using poly(vinylidene fluoride) (PVDF) and UiO-66 via electrospinning and in situ growth.
• Characterization of optical properties: solar reflectance (93.78%) and emissivity (92.72%).
• Outdoor testing under varying environmental conditions and performance evaluation as a cooling face mask.

Main Results:

• The composite fabric achieved a significant temperature reduction of 18.7 °C below ambient temperature outdoors.
• As a cooling face mask, it demonstrated a 5.5 °C temperature reduction compared to conventional masks.
• The fabric exhibited excellent sweat absorption and evaporative cooling in hot, humid environments.
• Integrated smoke filtration and respiratory monitoring functions were successfully demonstrated.

Conclusions:

• The developed PVDF/UiO-66 composite fabric offers effective passive cooling through radiative and evaporative mechanisms.
• The fabric successfully integrates multiple functionalities, meeting diverse wearable technology needs.
• This material presents a promising solution for energy-efficient cooling and advanced personal protective equipment.