| 초록 |
Nanoporous polymeric membranes with a pore size on the nanometer scale have attracted much attention due to potential applications including separation, purification, and sensing. However, polymeric membranes with sub-10 nm of pore size is not easy to fabricate, in spite of diverse strategies developed. In our work, well-ordered nanoporous membranes were fabricated by utilizing the self-assembly of polystyrene-b-poly(4-vinylpyridine). In particular, in order to reduce the pore size, layer-by-layer (LBL) assembly was performed via electrostatic interaction using Poly(sodium 4-styrenesulfonate)(PSS) and Poly(allylamine hydrochloride)(PAH) aqueous solution. As the LBL dipping cycle increases, it was observed that the pore size reduced as a result of successful accumulation of layers on the membrane pore wall. The performances of the membranes were evaluated by measuring the water flux through the permeation experiment. |
