| 초록 |
Boron nitride nanotube (BNNT) which structure is similar to carbon nanotube (CNT) has excellent mechanical properties, thermal conductivityand also electrical insulation. It is known to be adequate for heat disspating and insulative materials. However, it is still commercially unavailable due to scale-up issues of synthesis. One of the candidates for commercial process is a ball milling-annealing process which, however, also produces lots of impurities including BN nanoparticles, amorphous materials, and milling ball debris. Here we developed a simple method to purify BNNT using amine-terminated polymeric materials, where BNNT was wrapped by them via polar interaction. Successively the wrapped BNNT is separated from the mixtures by centrifugation. This process will be more suitable for epoxy composites because the polymeric material can be used for curing agent of epoxy resin. Characterization including purity of BNNT has been done by SEM and TEM analysis and Raman spectroscopy. |
