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Advanced Bioinspired Personal Thermoregulation Textiles for Outdoor Radiative Cooling
K M Faridul Hasan1, Jianheng Chen1, Siru Chen1
1School of Energy and Environment, City University of Hong Kong, Kowloon 999077, Hong Kong.
ACS Applied Materials & Interfaces
|January 1, 2025
Summary
Researchers developed a novel smart textile, PAC@T, inspired by flamingo feathers. This textile offers superior radiative cooling, reducing temperatures by 6.1°C compared to traditional fabrics, providing energy-free personal thermoregulation.
Area of Science:
- Materials Science
- Textile Engineering
- Nanotechnology
Background:
- Radiative cooling textiles are crucial for personal thermal comfort and mitigating heat stress from global warming.
- Integrating effective radiative cooling into scalable textile materials for thermoregulation presents significant challenges.
- Optimal cooling requires textiles with precisely controlled optical properties and spectral selectivity.
Purpose of the Study:
- To develop a novel smart textile with enhanced radiative cooling properties inspired by natural thermoregulation.
- To create a scalable and durable textile material for effective personal thermoregulation.
- To investigate the optical and thermal properties of the developed smart textile.
Main Methods:
- Fabrication of a nanoporous nonwoven material from polyacrylonitrile and alumina particles.
- Integration of the nonwoven material with a cellulosic cotton knit fabric using electrospinning and hot pressing.
- Characterization of the smart textile metafabric (PAC@T) for optical properties, porosity, and thermal performance.
Main Results:
- The developed PAC@T exhibited high solar reflectance (95%) and mid-infrared (MIR) emissivity (91.8%).
- PAC@T demonstrated enhanced water vapor transmission and evaporation rates, improving wearer comfort.
- The smart textile achieved a significant cooling effect, reducing temperature by 6.1°C compared to conventional textiles.
Conclusions:
- The developed PAC@T offers superior cooling efficiency, durability, and energy-free operation for personal thermoregulation.
- The material is synthesized from accessible raw materials using a potentially scalable process.
- PAC@T holds substantial promise for industrial applications in smart textiles for personal thermal management.
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