| 초록 |
Boron nitride nanotubes (BNNT) are drawing attention due to their unique physical properties over carbon nanotubes such as high oxidation resistance (stable up to 900℃), piezoelectric, and high neutron absorptivity. However, the nano-dispersion of BNNTs especially in organic solvents, which should be achieved for fabrication of composites with reproducible properties, has still been a challenging issue. In this talk, we will present a non-covalent functionalization approach using poly(4-vinylpyridine) (P4VP) in order to efficiently debundle and achieve nano-dispersion of BNNTs in various protic solvents without any damages on physical properties of BNNTs. By taking advantages of the highly debundled BNNT dispersion, thermally regenerable ultrafiltration membranes which can exclude higher than 99.9% of nanoparticles (about 25 nm in diameter) as well as environmental nano-dusts were fabricated. |
