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        Designing Waterproof and Breathable Fabric Based on Polyurethane/Silica Dioxide Web Fabricated by Electrospinning

        Pingping Li,Qiong Zhang,Tavonga Trevor Chadyagondo,Guoqing Li,Haihong Gu,Ni Li 한국섬유공학회 2020 Fibers and polymers Vol.21 No.7

        In this research, non-fluorinated polyurethane/silica dioxide (PU/SiO2) nanofibrous webs were prepared byelectrospinning and hydrothermal treatment. Then the developed webs were laminated onto polyester woven fabrics toexamine their practical applications in the textile area. Investigation for surface morphology, pore size, water contact angle(WCA) and hydrostatic pressure was done in detail to examine the waterproofness and breathability of the PU/SiO2 nanofiberwebs and the laminated fabrics. The results showed that when Tetraethoxysilane concentration in electrospun solution was6 wt%, the fibrous web exhibited the desirable morphology, mechanical properties and hydrophobicity. At this time, SiO2nanoparticles dispersed uniformly on and in PU nanofibers and fibers had a more uniform diameter. The composite laminatedfabrics produced exhibited a value for hydrostatic pressure of 23.5 kPa with water vapor transmission rate (WVTR) of5.19 kg/m2/day.

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