期刊
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
卷 45, 期 19, 页码 4413-4420出版社
JOHN WILEY & SONS INC
DOI: 10.1002/pola.22190
关键词
carbon nanotubes; dispersion; microencapsulation; nanocomposite; phase-transfer catalyst
资金
- National Research Foundation of Korea [R01-2005-000-10367-0] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Multiwalled carbon nanotubes (MWNTs) were effectively functionalized with KMnO4 in the presence of a phase-transfer catalyst at room temperature. The hydroxyl functionalized MWNTs were reacted with a vinyl-group carrying silane-coupling agent and the terminal vinyl groups were used to fabricate polystyrene (PS) brushes by solution polymerization. Finally, PS-encapsulated MWNTs were obtained. The synthesis results were verified from FT-Raman, thermal gravimetric analysis, energy dispersive X-ray analysis, and transmission electron microscope. PS-encapsulated MWNTs had much improved dispersion stability in hydrophobic medium, toluene since grafted hydrophobic PS interacts with media and has improved compatibility. This functionalization technique would provide a facile route to prepare various polymer brushes on the surface of MWNTs to improve the dispersion of MWNTs for potential applications. (c) 2007 Wiley Periodicals, Inc.
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