Synthesis of water-soluble poly(vinyl alcohol)-grafted multi-walled carbon nanotubes

Hyun Jeong Jeon; Ji Ho Youk; Woong Ryeol Yu

doi:10.1007/s13233-010-0504-2

Synthesis of water-soluble poly(vinyl alcohol)-grafted multi-walled carbon nanotubes

Hyun Jeong Jeon, Ji Ho Youk, Woong Ryeol Yu

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

A facile method for preparing waster-soluble poly(vinyl alcohol)-grafted multi-walled carbon nanotubes (PVA-grafted MWNTs) was developed. Well-defined poly(vinyl acetate) chains end-capped by a cobalt(II) acetylacetonate (Co(acac)₂) complex [PVAc-Co(acac)₂] were synthesized by the cobalt-mediated radical polymerization (CMRP) of vinyl acetate. PVAc macroradicals generated by the homolytic cleavage of the carbon-cobalt (C-Co) bonds of PVAc-Co(acac)₂ chains were then grafted directly to the MWNTs via radical addition reactions in dimethyl sulfoxide (DMSO) at 50 °C. The amount of the PVAc grafted onto the surface of the MWNTs decreased with increasing molecular weight of PVAc-Co(acac)₂. Hydrolysis of the grafted PVAc finally yielded PVA-grafted MWNTs, which showed good solubility in water. Surface functionalization of the MWNTs was confirmed by ¹H NMR spectroscopy, FTIR spectroscopy and TEM.

Original language	English
Pages (from-to)	458-462
Number of pages	5
Journal	Macromolecular Research
Volume	18
Issue number	5
DOIs	https://doi.org/10.1007/s13233-010-0504-2
State	Published - May 2010

Keywords

cobalt-mediated radical polymerization
graft
multi-walled carbon nanotubes
poly (vinyl alcohol)
poly(vinyl acetate)

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10.1007/s13233-010-0504-2

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title = "Synthesis of water-soluble poly(vinyl alcohol)-grafted multi-walled carbon nanotubes",

abstract = "A facile method for preparing waster-soluble poly(vinyl alcohol)-grafted multi-walled carbon nanotubes (PVA-grafted MWNTs) was developed. Well-defined poly(vinyl acetate) chains end-capped by a cobalt(II) acetylacetonate (Co(acac)2) complex [PVAc-Co(acac)2] were synthesized by the cobalt-mediated radical polymerization (CMRP) of vinyl acetate. PVAc macroradicals generated by the homolytic cleavage of the carbon-cobalt (C-Co) bonds of PVAc-Co(acac)2 chains were then grafted directly to the MWNTs via radical addition reactions in dimethyl sulfoxide (DMSO) at 50 °C. The amount of the PVAc grafted onto the surface of the MWNTs decreased with increasing molecular weight of PVAc-Co(acac)2. Hydrolysis of the grafted PVAc finally yielded PVA-grafted MWNTs, which showed good solubility in water. Surface functionalization of the MWNTs was confirmed by 1H NMR spectroscopy, FTIR spectroscopy and TEM.",

keywords = "cobalt-mediated radical polymerization, graft, multi-walled carbon nanotubes, poly (vinyl alcohol), poly(vinyl acetate)",

author = "Jeon, {Hyun Jeong} and Youk, {Ji Ho} and Yu, {Woong Ryeol}",

year = "2010",

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doi = "10.1007/s13233-010-0504-2",

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journal = "Macromolecular Research",

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AU - Jeon, Hyun Jeong

AU - Youk, Ji Ho

AU - Yu, Woong Ryeol

PY - 2010/5

Y1 - 2010/5

N2 - A facile method for preparing waster-soluble poly(vinyl alcohol)-grafted multi-walled carbon nanotubes (PVA-grafted MWNTs) was developed. Well-defined poly(vinyl acetate) chains end-capped by a cobalt(II) acetylacetonate (Co(acac)2) complex [PVAc-Co(acac)2] were synthesized by the cobalt-mediated radical polymerization (CMRP) of vinyl acetate. PVAc macroradicals generated by the homolytic cleavage of the carbon-cobalt (C-Co) bonds of PVAc-Co(acac)2 chains were then grafted directly to the MWNTs via radical addition reactions in dimethyl sulfoxide (DMSO) at 50 °C. The amount of the PVAc grafted onto the surface of the MWNTs decreased with increasing molecular weight of PVAc-Co(acac)2. Hydrolysis of the grafted PVAc finally yielded PVA-grafted MWNTs, which showed good solubility in water. Surface functionalization of the MWNTs was confirmed by 1H NMR spectroscopy, FTIR spectroscopy and TEM.

AB - A facile method for preparing waster-soluble poly(vinyl alcohol)-grafted multi-walled carbon nanotubes (PVA-grafted MWNTs) was developed. Well-defined poly(vinyl acetate) chains end-capped by a cobalt(II) acetylacetonate (Co(acac)2) complex [PVAc-Co(acac)2] were synthesized by the cobalt-mediated radical polymerization (CMRP) of vinyl acetate. PVAc macroradicals generated by the homolytic cleavage of the carbon-cobalt (C-Co) bonds of PVAc-Co(acac)2 chains were then grafted directly to the MWNTs via radical addition reactions in dimethyl sulfoxide (DMSO) at 50 °C. The amount of the PVAc grafted onto the surface of the MWNTs decreased with increasing molecular weight of PVAc-Co(acac)2. Hydrolysis of the grafted PVAc finally yielded PVA-grafted MWNTs, which showed good solubility in water. Surface functionalization of the MWNTs was confirmed by 1H NMR spectroscopy, FTIR spectroscopy and TEM.

KW - cobalt-mediated radical polymerization

KW - graft

KW - multi-walled carbon nanotubes

KW - poly (vinyl alcohol)

KW - poly(vinyl acetate)

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U2 - 10.1007/s13233-010-0504-2

DO - 10.1007/s13233-010-0504-2

M3 - Article

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SN - 1598-5032

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EP - 462

JO - Macromolecular Research

JF - Macromolecular Research

IS - 5

ER -

Synthesis of water-soluble poly(vinyl alcohol)-grafted multi-walled carbon nanotubes

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Keywords

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