TY - JOUR
T1 - Surface modification of multiwalled carbon nanotubes via nitroxide-mediated radical polymerization
AU - Zhao, Xiao Dong
AU - Fan, Xinc H.E.
AU - Chen, Xiao Fanc
AU - Chai, Chun Peng
AU - Zhou, Q. I.Feng
PY - 2006/8/1
Y1 - 2006/8/1
N2 - 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′′-tetramethylpiperidinyloxy (MWNT-Tempo). The content of polystyrene grafted from the surface was controlled 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 relatively 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.
AB - 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′′-tetramethylpiperidinyloxy (MWNT-Tempo). The content of polystyrene grafted from the surface was controlled 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 relatively 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.
KW - Atom transfer radical polymerization (ATRP)
KW - Graft copolymers
KW - Living polymerization
KW - Multiwalled carbon nanotubes (MWNTs)
KW - Nitroxide-mediated radical polymerization (NMRP)
KW - Polystyrene; polystyrene-b-poly(4-vinylpyridine)
UR - http://www.scopus.com/inward/record.url?scp=33747167099&partnerID=8YFLogxK
U2 - 10.1002/pola.21570
DO - 10.1002/pola.21570
M3 - Article
AN - SCOPUS:33747167099
SN - 0887-624X
VL - 44
SP - 4656
EP - 4667
JO - Journal of Polymer Science, Part A: Polymer Chemistry
JF - Journal of Polymer Science, Part A: Polymer Chemistry
IS - 15
ER -