Accession Number:

ADA451857

Title:

Functionalization of Carbon Nanotubes via Electrophilic Substitution Reaction in Polyphosphoric Acid

Descriptive Note:

Final technical rept.

Corporate Author:

CHUNGBUK NATIONAL UNIV (KOREA) SCHOOL OF CHEMICAL ENGINEERING

Personal Author(s):

Report Date:

2006-07-26

Pagination or Media Count:

33.0

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 nanocompositePPA 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.

Subject Categories:

  • Inorganic Chemistry
  • Refractory Fibers

Distribution Statement:

APPROVED FOR PUBLIC RELEASE