Highly Permeable and Liquid-Repellent Textiles with Micro-Nano-Networks for Medical and Health Protection

Highly permeable protective textiles (HPPT) with micro/nano-networks were fabricated using a non-solvent induced phase separation, synergistically driven by CaCl 2 and fluorinated polyurethane, combined with spraying technique. The optimized HPPT exhibited excellent liquid repellency and air-moisture permeability properties due to the integration and cooperative drive of the low surface energy and the pore structure of the connectivity network, which can be used as desirable protective materials. The formation mechanism of micro/nano-network structure was analyzed by molecular dynamics and observed by dynamic phase transition behavior, which numerically combined with theory illustrate the phase transition mechanism of HPPT.