Multiwalled carbon nanotubes and nanofibers grafted with polyetherketones in mild and viscous polymeric acid
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- Multiwalled carbon nanotubes and nanofibers grafted with polyetherketones in mild and viscous polymeric acid
- Oh, SJ; Lee, HJ; Keum, DK; Lee, SW; Wang, DH; Park, SY; Tan, LS; Baek, Jong-Beom
- Carbon nanofibers; Carbon nanotubes; Nanocomposites
- Issue Date
- ELSEVIER SCI LTD
- POLYMER, v.47, no.4, pp.1132 - 1140
- Direct covalent attachment of amorphous and semicrystalline polyetherketones onto the surface of either an as-received multi-walled carbon nanotube (MWNT) or a vapor-grown carbon nanofiber (VGCNF) in polyphosphoric acid (PPA) with optimized P2O5 content resulted in uniform grafting of polyetherketones to these carbon nanoscale materials. Soxhlet extraction experiment, the spectra from FT-IR spectroscopy and the clear images from high-resolution transmission electron microscopy showed that the covalent attachment is effective in uniformly coating the PEK grafts on the surfaces of both MWNT and VGCNF. Additionally, a drastic increase in solution viscosity due to the formation of giant molecules was monitored during polymerization. As such, the resulting nanocomposites were easily fabricated via a simple compression molding technique. The alignment possibility of MWNT and VGCNF grafted with semicrystalline PEK in these thermoplastic nanocomposites via solution fiber spinning was also demonstrated.
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