| 초록 |
Membranes with hierarchical architectures, where pores of different sizes are integrated in tandem, are of great interests for water/oil emulsion separation due to potentials for achieving large flux, high selectivity, and mechanical durability. However, it remains challenging to modify the pore size in the nanoscale without sacrificing the flux, thus limiting the size of the oil/water droplets that can be filtered. Here, we electrospin a thin layer of azobenzene polymer (i.e., polydisperse orange 3, PDO 3) fibers on a highly porous supporting layer (i.e., electrospun fiber network from polycaprolactone), followed by photofluidization of PDO 3 fibers to shrink the pore size from micrometer to nanometer by controlling the light exposure dosage. |
