Grafting of polymer chains on the surface of carbon nanotubes via nitroxide radical coupling reaction

Nadka Tzankova Dintcheva, Giovanni Filippone, Monica Guenzi, Chengcheng Yang, Serena Coiai, Cristian Gambarotti, Sabrina Carroccio, Francesca Cicogna, Calogero Pinzino, Elisa Passaglia

Risultato della ricerca: Article

6 Citazioni (Scopus)

Abstract

Poly(butylene succinate)/MWCNTs nanocomposites with improved dispersion and with nanotubes embedded/immobilized into the polymer matrix were here prepared by an alternative "grafting to" method based on thenitroxide radical coupling reaction. Poly(butylene succinate) (PBS) was grafted on the surface of TEMPO (2,2,6,6-tetramethyl-1-piperidinyloxy) modified multi-walled carbon nanotubes (MWCNTs) via a nitroxide radical coupling reaction. TEMPO functionalized MWCNTs (MWCNTs-g-TEMPO) were synthesized using the Cu(I)-catalyzed azide/alkyne click chemistry approach and the covalent bond of the nitroxide moieties onto the MWCNTs was confirmed via electron paramagnetic resonance (EPR) spectroscopy. The PBS grafting on the sidewalls of MWCNTs was carried out in solution via peroxide-induced formation of macroradicals and it was confirmed by EPR and attenuated total reflectance Fourier transform infrared analysis. Preliminary rheological and calorimetric analyses revealed that the grafting improves both the quality of stress transfer across the polymer-nanotube interface and the degree of dispersion of the filler, which also exhibited a moderate nucleating action on the PBS. Overall, our results demonstrate that nitroxide radical coupling is an efficient and feasible 'grafting to' method to covalently bond polymer chains on MWCNTs with possible advantages in the final properties of the polymer nanocomposites.
Lingua originaleEnglish
pagine (da-a)48-56
Numero di pagine9
RivistaPolymer International
Volume65
Stato di pubblicazionePublished - 2016

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Carbon Nanotubes
Carbon nanotubes
Polymers
Nanotubes
Paramagnetic resonance
Nanocomposites
Covalent bonds
Alkynes
Azides
Peroxides
nitroxyl
Polymer matrix
Fillers
Fourier transforms
Spectroscopy
Infrared radiation

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

Cita questo

Dintcheva, N. T., Filippone, G., Guenzi, M., Yang, C., Coiai, S., Gambarotti, C., ... Passaglia, E. (2016). Grafting of polymer chains on the surface of carbon nanotubes via nitroxide radical coupling reaction. Polymer International, 65, 48-56.

Grafting of polymer chains on the surface of carbon nanotubes via nitroxide radical coupling reaction. / Dintcheva, Nadka Tzankova; Filippone, Giovanni; Guenzi, Monica; Yang, Chengcheng; Coiai, Serena; Gambarotti, Cristian; Carroccio, Sabrina; Cicogna, Francesca; Pinzino, Calogero; Passaglia, Elisa.

In: Polymer International, Vol. 65, 2016, pag. 48-56.

Risultato della ricerca: Article

Dintcheva, NT, Filippone, G, Guenzi, M, Yang, C, Coiai, S, Gambarotti, C, Carroccio, S, Cicogna, F, Pinzino, C & Passaglia, E 2016, 'Grafting of polymer chains on the surface of carbon nanotubes via nitroxide radical coupling reaction', Polymer International, vol. 65, pagg. 48-56.
Dintcheva, Nadka Tzankova ; Filippone, Giovanni ; Guenzi, Monica ; Yang, Chengcheng ; Coiai, Serena ; Gambarotti, Cristian ; Carroccio, Sabrina ; Cicogna, Francesca ; Pinzino, Calogero ; Passaglia, Elisa. / Grafting of polymer chains on the surface of carbon nanotubes via nitroxide radical coupling reaction. In: Polymer International. 2016 ; Vol. 65. pagg. 48-56.
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AU - Dintcheva, Nadka Tzankova

AU - Filippone, Giovanni

AU - Guenzi, Monica

AU - Yang, Chengcheng

AU - Coiai, Serena

AU - Gambarotti, Cristian

AU - Carroccio, Sabrina

AU - Cicogna, Francesca

AU - Pinzino, Calogero

AU - Passaglia, Elisa

PY - 2016

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N2 - Poly(butylene succinate)/MWCNTs nanocomposites with improved dispersion and with nanotubes embedded/immobilized into the polymer matrix were here prepared by an alternative "grafting to" method based on thenitroxide radical coupling reaction. Poly(butylene succinate) (PBS) was grafted on the surface of TEMPO (2,2,6,6-tetramethyl-1-piperidinyloxy) modified multi-walled carbon nanotubes (MWCNTs) via a nitroxide radical coupling reaction. TEMPO functionalized MWCNTs (MWCNTs-g-TEMPO) were synthesized using the Cu(I)-catalyzed azide/alkyne click chemistry approach and the covalent bond of the nitroxide moieties onto the MWCNTs was confirmed via electron paramagnetic resonance (EPR) spectroscopy. The PBS grafting on the sidewalls of MWCNTs was carried out in solution via peroxide-induced formation of macroradicals and it was confirmed by EPR and attenuated total reflectance Fourier transform infrared analysis. Preliminary rheological and calorimetric analyses revealed that the grafting improves both the quality of stress transfer across the polymer-nanotube interface and the degree of dispersion of the filler, which also exhibited a moderate nucleating action on the PBS. Overall, our results demonstrate that nitroxide radical coupling is an efficient and feasible 'grafting to' method to covalently bond polymer chains on MWCNTs with possible advantages in the final properties of the polymer nanocomposites.

AB - Poly(butylene succinate)/MWCNTs nanocomposites with improved dispersion and with nanotubes embedded/immobilized into the polymer matrix were here prepared by an alternative "grafting to" method based on thenitroxide radical coupling reaction. Poly(butylene succinate) (PBS) was grafted on the surface of TEMPO (2,2,6,6-tetramethyl-1-piperidinyloxy) modified multi-walled carbon nanotubes (MWCNTs) via a nitroxide radical coupling reaction. TEMPO functionalized MWCNTs (MWCNTs-g-TEMPO) were synthesized using the Cu(I)-catalyzed azide/alkyne click chemistry approach and the covalent bond of the nitroxide moieties onto the MWCNTs was confirmed via electron paramagnetic resonance (EPR) spectroscopy. The PBS grafting on the sidewalls of MWCNTs was carried out in solution via peroxide-induced formation of macroradicals and it was confirmed by EPR and attenuated total reflectance Fourier transform infrared analysis. Preliminary rheological and calorimetric analyses revealed that the grafting improves both the quality of stress transfer across the polymer-nanotube interface and the degree of dispersion of the filler, which also exhibited a moderate nucleating action on the PBS. Overall, our results demonstrate that nitroxide radical coupling is an efficient and feasible 'grafting to' method to covalently bond polymer chains on MWCNTs with possible advantages in the final properties of the polymer nanocomposites.

KW - Click chemistry

KW - Electron paramagnetic resonance (EPR)

KW - MWCNTs

KW - Nitroxide radical coupling (NRC)

KW - Polymer grafting

KW - Polymers and Plastics

KW - Rheology

UR - http://hdl.handle.net/10447/154006

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