Preparation method of one-way moisture-conducting nanofiber membrane with porous Janus structure

The invention discloses a preparation method of a one-way moisture-conducting nanofiber membrane with a porous Janus structure, which comprises the following steps: preparing a hydrophilic fiber membrane by using hydrophilic high-molecular polymers such as polyacrylonitrile, polyacrylamide, polyurethane, polyphthalamide and the like and water-soluble high-molecular polymer materials such as polyacrylamide, polyacrylic acid, polyvinylpyrrolidone, polyvinyl alcohol and the like; the hydrophobic fiber membrane is prepared from hydrophobic high-molecular polymer materials such as polyvinylidene fluoride, polylactic acid, polyurethane and polycaprolactone. The method comprises the following steps: firstly, preparing a hydrophilic fiber membrane, forming porous structure fibers on hydrophilic fibers by adopting a post-treatment technology, and then spinning in sequence, and spinning a hydrophobic fiber membrane on the hydrophilic fiber membrane, so that the prepared nanofiber membrane has a hydrophilic-hydrophobic