Surface modification of multiwalled carbon nanotubes via nitroxide‐mediated radical polymerization

Zhao, Xiaodong; Fan, Xinghe; Chen, Xiao‐Fang; Chai, Chunpeng; Zhou, Qifeng

doi:10.1002/pola.21570

Cited by 94 publications

(49 citation statements)

References 33 publications

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“…The existence of the D-band and G-band indicated that during the polymerization, the graphite structure of the MWNTs was not destroyed and that the number of sp 3 hybridized carbon atoms increased. [22][23][24] As shown in the spectrum, the D-band was enhanced, and the polymer chain radicals or the initiator fragment was attached to the sidewall of the MWNTs. This indicated partial destruction of the conjugation structures of the sidewall of the MWNTs due to the addition of a small molecular free radical or the polymer chain free radical during the suspension polymerization.…”

Section: Resultsmentioning

confidence: 97%

Synthesis and characterization of a polymer/multiwalled carbon nanotube composite and its application in the hydration of ethylene oxide

Yu¹,

Chen²,

He³

et al. 2009

J of Applied Polymer Sci

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Multiwalled carbon nanotubes (MWNTs) were incorporated into the crosslinking network of a styrene-divinylbenzene copolymer (PS-DVB) via suspension polymerization. The prepared crosslinking PS-DVB with MWNTs was first treated with chloromethyl methyl ether to introduce chloromethyl groups through Friedel-Craft reaction; then, the chloromethylation product was reacted with trimethyl amine to obtain the target polymer/carbon nanotube composite: PS-DVB/MWNT ion-exchange resin. The obtained composite was characterized by Fourier transform infrared spectroscopy, thermogravimetric analysis, Raman spectroscopy, and X-ray photoelectron spectroscopy. The results show the successful incorporation of MWNTs into the polymer network. The physical and chemical properties of the PS-DVB/MWNT ion-exchange resin were nearly the same as those of the controlled sample. With its excellent antiswelling properties, the catalytic behavior of the polymer composite was examined in the hydration of ethylene oxide. Also, it demonstrated excellent stability as a catalyst without a decline in conversion and selectivity in a long-time run.

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Section: Resultsmentioning

confidence: 97%

Synthesis and characterization of a polymer/multiwalled carbon nanotube composite and its application in the hydration of ethylene oxide

Yu¹,

Chen²,

He³

et al. 2009

J of Applied Polymer Sci

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“…NMP delivered PSmodified CNTs 19 (Scheme 8). [54] By varying polymerization conditions, the dispersibility of the modified CNTs could be tuned. The living character of the polymerization allowed formation of block copolymers at CNTs.…”

Section: Introductionmentioning

confidence: 99%

“…The living character of the polymerization allowed formation of block copolymers at CNTs. [54,55] A further substrate that was subjected to TEMPOmediated polymer brush synthesis is the Merrifield polymer resin. TEMPO was reduced with sodium ascorPolymer Brushes by Nitroxide-Mediated Polymerization Scheme 6.…”

Section: Introductionmentioning

confidence: 99%

Polymer Brushes by Nitroxide‐Mediated Polymerization

Brinks

Studer

2009

Macromol. Rapid Commun.

122

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This review article describes the preparation of polymer brushes by nitroxide-mediated radical polymerization using either the 'grafting to' or the 'grafting from' approach. The use of TEMPO as a classical initiator is intensively described. More sophisticated nitroxides are also included in the discussion. Brush formation on flat surfaces such as wafers and also on particles is reported. Finally, some applications of polymer brushes are presented.

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“…[26][27][28] Covalent attachment of polymer chains to the MWNT surface can be performed by ''grafting from'' [26,[28][29][30] and ''grafting to'' [31,32] approaches. Zhao et al reported polystyrene grafted MWNTs (MWNT-PSs) and polystyrene-blockpoly(4-vinylpyridine) grafted MWNTs (MWNT-PS-bP4VPs) via nitroxide-mediated radical polymerization (NMRP).…”

mentioning

confidence: 99%

Modification and Grafting of Multi‐Walled Carbon Nanotubes with Bisphenol‐A‐polycarbonate

Mörmann

Yong

Zou

et al. 2008

Macro Chemistry & Physics

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Multi‐walled carbon nanotubes (MWNT) were oxidized with nitric acid and resulting carboxy groups were transformed to amino groups with a diamine under microwave irradiation. Grafting of bisphenol‐A‐polycarbonate onto carboxy‐ and amino‐functional MWNT through transesterification or aminolysis resulted in weight increase up to 300%. The morphology of functionalized and grafted MWNTs was investigated with scanning force microscopy (SFM) and transmission electron microscopy (TEM). Depending on the type of functionalisation and the extent of grafting different morphologies were observed. Aminofunctional MWNT‐g‐PCs showed more “ball‐like” or irregular protrusions of grafted PC. Carboxyfunctional MWNT‐g‐PCs were more smoothly covered with PC.

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Surface modification of multiwalled carbon nanotubes via nitroxide‐mediated radical polymerization

Cited by 94 publications

References 33 publications

Synthesis and characterization of a polymer/multiwalled carbon nanotube composite and its application in the hydration of ethylene oxide

Synthesis and characterization of a polymer/multiwalled carbon nanotube composite and its application in the hydration of ethylene oxide

Polymer Brushes by Nitroxide‐Mediated Polymerization

Modification and Grafting of Multi‐Walled Carbon Nanotubes with Bisphenol‐A‐polycarbonate

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