Synthesis and Properties of Poly(methyl methacrylate)/Carbon Nanotube Composites Covalently Integrated Through In Situ Radical Polymerization

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Poly(methyl methacrylate) (PMMA)/single-walled carbon nanotube (SWNT) composites were synthesized by the grafting of PMMA onto the sidewalls of SWNTs via in situ radical polymerization. The free-radical initiators were covalently attached to the SWNTs by a well-known esterification method and confirmed by means of thermogravimetric analysis and Fourier transform infrared spectroscopy. Scanning electron microscopy and transmission electron microscopy were used to image the PMMA-SWNT composites; these images showed the presence of polymer layers on the surfaces of debundled, individual nanotubes. The PMMA-SWNT composites exhibited better solubility in chloroform than the solution-blended composite materials. On the other hand, compared to the neat PMMA, the PMMA-SWNT nanocomposites displayed a glass-transition temperature up to 6.0 degrees C higher and a maximum thermal decomposition temperature up to 56.6 degrees C higher. The unique properties of the nanocomposites resulted from the strong interactions between the SWNTs and the PMMA chains. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 119: 452-459, 2011
Publisher
WILEY-BLACKWELL
Issue Date
2011-01
Language
English
Article Type
Article
Keywords

LAYERED SILICATE NANOCOMPOSITES; MULTIWALLED CARBON NANOTUBES; MECHANICAL-PROPERTIES; ELECTRICAL-PROPERTIES; MODULUS; ENHANCEMENT; TOUGHNESS; STRENGTH; FILMS

Citation

JOURNAL OF APPLIED POLYMER SCIENCE, v.119, no.1, pp.452 - 459

ISSN
0021-8995
DOI
10.1002/app.32639
URI
http://hdl.handle.net/10203/250904
Appears in Collection
CBE-Journal Papers(저널논문)
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