Polymer Composites, Journal Year: 2025, Volume and Issue: unknown

Published: May 7, 2025

Abstract The development of high‐performance protective clothing is essential for ensuring the safety and comfort healthcare workers. Traditional materials often face challenges in breathability, waterproofing, thermal management. In this study, we fabricated polylactic acid/silicon dioxide–polyvinylidene fluoride /alumina (PLA/SiO 2 –PVDF/Al O 3 ) composite fabrics by coating PLA/SiO microfibers with PVDF/Al . resulting composites exhibited a microfibrous structure 82.1% porosity fiber diameters 10 μm, leading to enhanced air permeability (115.1 mm/s) water vapor (1686.4 g/m ·24 h). incorporation PVDF Al improved waterproofing properties significantly, increasing contact angle 138.1° hydrostatic pressure resistance 2382.2 Pa. Furthermore, radiative cooling efficiency was markedly enhanced, temperature reduction 9.0°C compared uncoated microfibers, achieving 87.4% reflectance 98.4% emissivity. These results demonstrate that fabrics, through simple process, exhibit excellent efficient daytime cooling, making them highly suitable applications. Highlights breathable acid were developed. fabric demonstrates μm microfibers. coated specimen hydrophobicity, robust protection. High emissivity (98.4%) indicates cooling.

Language: Английский