Functionalization of Carbon Nanotubes via Electrophilic Substitution Reaction in Polyphosphoric Acid
Abstract
Polyphosphoric acid (PPA) with optimized P2O5 content as an electrophilic-substitution-reaction medium is indeed benign and effective for the covalent attachment of polyetherketones onto the surface of the electron-deficient MWNT and VGCNF. Furthermore, on the basis of all supportive evidences, this work provides one of the most efficient methods to directly and uniformly grafting the surfaces of carbon nanotubes (CNT) and nanofibers (CNF) without or minimum damages. More importantly, the fact that the isolated nanocomposites were easily processed and fabricated with the conventional molding techniques and 5 wt% nanocomposite/PPA dopes could be wet-spun into a single fiber simply by the force of gravity. With this value-added feature, their commercialization potential should be greatly enhanced. This work is envisioned that one of the best tools in the field of chemical modification of carbon nanomaterials for application-specific purpose without concerning interfacial interaction between carbon nanomaterial and matrix, which often considered in physical dispersion of carbon nanomaterial into matrix.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 26, 2006
- Accession Number
- ADA451857
Entities
People
- Jong-Beom Baek
Organizations
- Chungbuk National University