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Semimetallic Transport in Nanocomposites Derived from Grafting of Linear and Hyperbranched Poly(phenylene sulfide)s onto the Surface of Functionalized Multi-Walled Carbon Nanotubes
- Source :
- Macromolecules. 41:7423-7432
- Publication Year :
- 2008
- Publisher :
- American Chemical Society (ACS), 2008.
-
Abstract
- The semimetallic conductive nanocomposites, linear or hyperbranched poly(phenylene sulfide) (PPS) grafted multiwalled carbon nanotubes (MWNT), were successfully prepared by two-step reaction sequences. MWNT were first functionalized with 4-chlorobenzoic acid in poly(phosphoric acid) (PPA)/phosphorus phentoxide (P2O5) medium in a “direct” Friedel−Crafts acylation reaction to afford 4-chlorobenzoyl-functionalized MWNT (CB-MWNT). A subsequent nucleophilic substitution reaction between CB-MWNT and 4-chlorobenzenethiol as an AB monomer or 3,5-dichlorobenzenethiol as an AB2 monomer was conducted to graft the linear PPS (LPPS) or hyperbranched PPS (HPPS) in NMP/toluene in the presence of sodium carbonate to afford LPPS grafted MWNT (LPPS-g-MWNT) or HPPS grafted MWNT (HPPS-g-MWNT), respectively. The covalent attachment of corresponding polymers onto the surface of MWNT was indirectly confirmed by a model study. The structures of polymer-grafted nanocomposites were clearly discernible from those of the samples pre...
- Subjects :
- chemistry.chemical_classification
Materials science
Nanocomposite
Polymers and Plastics
Sulfide
Organic Chemistry
Carbon nanotube
Polymer
law.invention
Inorganic Chemistry
chemistry.chemical_compound
Monomer
chemistry
Phenylene
law
Polymer chemistry
Materials Chemistry
Nucleophilic substitution
Thermal stability
Subjects
Details
- ISSN :
- 15205835 and 00249297
- Volume :
- 41
- Database :
- OpenAIRE
- Journal :
- Macromolecules
- Accession number :
- edsair.doi...........c6814d658ffeef4d1ea8bd9682af97cf