Surface modification of multiwalled carbon nanotubes via nitroxide‐mediated radical polymerization
Surface modification of multiwalled carbon nanotubes via nitroxide‐mediated radical polymerization
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DOI：
10.1002/pola.21570
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发表时间：
2006-08
期刊：
影响因子：
--
通讯作者：
Xiao-Dong Zhao;Xinghe Fan;Xiaofang Chen;C. Chai;Qifeng Zhou
中科院分区：
文献类型：
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作者：
Xiao-Dong Zhao;Xinghe Fan;Xiaofang Chen;C. Chai;Qifeng Zhou
The nitroxide-mediated radical polymerization of styrene was carried out on the surfaces of multiwalled carbon nanotubes (MWNTs) initiated by an MWNT- supported initiator multiwalled carbon nanotube-2@,2@,6@,6@-tetramethylpiperidiny- loxy (MWNT-Tempo). The content of polystyrene grafted from the surface was con- trolled by changes in the polymerization conditions, such as the reaction times or the ratios of monomers to initiators. The obtained polystyrene-grafted multiwalled carbon nanotubes (MWNT-PSs) were further used to initiate the polymerization of 4-vinyl- pyridine to get polystyrene-b-poly(4-vinylpyridine)-grafted multiwalled carbon nano- tubes (MWNT-PS-b-P4VPs). In contrast to unmodified MWNTs, MWNT-PSs had rel- atively good dispersibility in various organic solvents, such as tetrahydrofuran, CHCL3, and o-dichlorobenzene. The structures and properties of MWNT-PSs and MWNT-PS-b-P4VPs were characterized and studied with several methods, including thermogravimetric analysis, Fourier transform infrared, ultraviolet-visible, and transmission electron microscopy. V C 2006 Wiley Periodicals, Inc. J Polym Sci Part A: Polym
