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Author

Baek, Jong-Beom
Center for Dimension-Controllable Organic Frameworks
Research Interests
  • Covalent Organic Frameworks (COFs), Carbon Nanotubes(CNTs), graphene, Energy Conversion and Storage

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In situ grafting of carboxylic acid-terminated hyperbranched poly (ether-ketone) to the surface of carbon nanotubes

Cited 37 times inthomson ciCited 36 times inthomson ci
Title
In situ grafting of carboxylic acid-terminated hyperbranched poly (ether-ketone) to the surface of carbon nanotubes
Author
Choi, Ja-YoungHan, Sang-WookHuh, Wan-SooTan, Loon-SengBaek, Jong-Beom
Keywords
Carbon nanotubes; Hyperbranched poly(ether-ketone); Polyphosphoric acid
Issue Date
200706
Publisher
ELSEVIER SCI LTD
Citation
POLYMER, v.48, no.14, pp.4034 - 4040
Abstract
Carboxylic acid-terminated hyperbranched poly(ether-ketone)s (HPEKs) were successfully grafted onto the surfaces of single-walled carbon nanotube (SWNT) and multi-walled carbon nanotube (MWNT) to afford HPEK-g-SWNT and HPEK-g-MWNT nanocomposites. They were prepared via in situ polymerization of 5-phenoxyisophthalic acid as an AB2 monomer for the HPEK in the presence of SWNT or MWNT in polyphosphoric acid (PPA)/phosphorous pentoxide (P2O5) medium. The resultant nanocomposites were homogeneously dispersed in various common polar aprotic solvents as well as in concentrated ammonium hydroxide. The experimental results from Soxhlet extraction, solubility enhancement, elemental analysis (EA), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM) provided clear evidences for grafting of hyperbranched polymers onto the surfaces of corresponding CNT's. Achieving enhanced solubility of CNT's in common organic solvents via the functionalization of CNT's is a key step for CNT's to be used in various application-specific purposes. The results could potentially envision to the area of CNT researches via the efficient introduction of three-dimensional globular dendritic macromolecules as increasing solubility, available multi-functionality, reactivity, processability, and also biocompatibility.
URI
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DOI
http://dx.doi.org/10.1016/j.polymer.2007.04.073
ISSN
0032-3861
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