| 초록 |
Multiwalled carbon nanotube/nylon-6 nanocomposites were prepared by in-situ polymerization, whereby functionalized MWNTs (F-MWNTs) and pristine MWNTs (P-MWNTs) were used as reinforcing materials. The F-MWNTs were functionalized by Friedel-Crafts acylation, which introduced aromatic amine (COC6H4-NH2) groups onto the sidewall. The SEM micrographs from the fractured surfaces of the nanocomposites showed that F-MWNTs were well dispersed as compared to P-MWNTs in nylon-6 matrix. The conductivities of P-MWNT (5 wt%)/nylon-6 and F-MWNT (5 wt%)/nylon-6 were 3.15×10-5 and 10-6 S/cm, respectively. The nylon and the MWNT//nylon composite nanofibers were prepared by an electropinning technique. The beads formation was observed when the amounts of MWNTs were increased in the nylon matrix. The nanocomposite nanofibers showed a relatively broader diameter than pure nylon nanofibers. The MWNTs were embedded within nanofibers and were well oriented along the nanofiber axis, as confirmed by TEM. |
