Tunable radical scavenging activity of carbon nanotubes through sonication

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Abstract

Carbon nanotubes (CNTs) having controlled radical scavenging activity have been achieved tuning the content of their lattice defects induced by an ultra-sound (us) treatment. The reactivity of CNTs, subjected to ultra-sonication for different time intervals, toward 1,1-diphenyl-2-pycryl (DPPH) and hydroxyl (•OH) radicals has been estimated and related to defect concentration, evaluated through Raman spectrometry. The radical scavenging efficiency of ultra-sound treated CNTs (us-CNTs) increases with increasing the content of the structural defects, suggesting that the defect resulting from us treatment can be capitalized to obtain an amplified and controlled radical scavenging activity. The us-CNTs have been incorporated in ultra high molecular weight polyethylene (UHMWPE) matrix by hot compaction with the aim to exploit their anti-oxidant activity against photo- and thermo-oxidative degradation. The us-CNTs containing nanocomposites show progressively improved photo- and thermo-oxidative resistance with increasing the us time, highlighting that the stability of the nanocomposites can be profitably modulated by controlling the amount of CNT structural defects.
Lingua originaleEnglish
pagine (da-a)240-247
Numero di pagine8
RivistaCarbon
Volume107
Stato di pubblicazionePublished - 2016

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Carbon Nanotubes
Sonication
Scavenging
Carbon nanotubes
Ultrasonics
Defects
Nanocomposites
Ultrahigh molecular weight polyethylenes
Crystal defects
Oxidants
Hydroxyl Radical
Spectrometry
Compaction
Tuning
Degradation

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)

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title = "Tunable radical scavenging activity of carbon nanotubes through sonication",
abstract = "Carbon nanotubes (CNTs) having controlled radical scavenging activity have been achieved tuning the content of their lattice defects induced by an ultra-sound (us) treatment. The reactivity of CNTs, subjected to ultra-sonication for different time intervals, toward 1,1-diphenyl-2-pycryl (DPPH) and hydroxyl (•OH) radicals has been estimated and related to defect concentration, evaluated through Raman spectrometry. The radical scavenging efficiency of ultra-sound treated CNTs (us-CNTs) increases with increasing the content of the structural defects, suggesting that the defect resulting from us treatment can be capitalized to obtain an amplified and controlled radical scavenging activity. The us-CNTs have been incorporated in ultra high molecular weight polyethylene (UHMWPE) matrix by hot compaction with the aim to exploit their anti-oxidant activity against photo- and thermo-oxidative degradation. The us-CNTs containing nanocomposites show progressively improved photo- and thermo-oxidative resistance with increasing the us time, highlighting that the stability of the nanocomposites can be profitably modulated by controlling the amount of CNT structural defects.",
keywords = "Chemistry (all)",
author = "Francesca D'Anna and Salvatore Marullo and Dintcheva, {Nadka Tzankova} and Bartolomeo Megna and Rossella Arrigo and Rosalia Teresi and Cristian Gambarotti",
year = "2016",
language = "English",
volume = "107",
pages = "240--247",
journal = "Carbon",
issn = "0008-6223",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Tunable radical scavenging activity of carbon nanotubes through sonication

AU - D'Anna, Francesca

AU - Marullo, Salvatore

AU - Dintcheva, Nadka Tzankova

AU - Megna, Bartolomeo

AU - Arrigo, Rossella

AU - Teresi, Rosalia

AU - Gambarotti, Cristian

PY - 2016

Y1 - 2016

N2 - Carbon nanotubes (CNTs) having controlled radical scavenging activity have been achieved tuning the content of their lattice defects induced by an ultra-sound (us) treatment. The reactivity of CNTs, subjected to ultra-sonication for different time intervals, toward 1,1-diphenyl-2-pycryl (DPPH) and hydroxyl (•OH) radicals has been estimated and related to defect concentration, evaluated through Raman spectrometry. The radical scavenging efficiency of ultra-sound treated CNTs (us-CNTs) increases with increasing the content of the structural defects, suggesting that the defect resulting from us treatment can be capitalized to obtain an amplified and controlled radical scavenging activity. The us-CNTs have been incorporated in ultra high molecular weight polyethylene (UHMWPE) matrix by hot compaction with the aim to exploit their anti-oxidant activity against photo- and thermo-oxidative degradation. The us-CNTs containing nanocomposites show progressively improved photo- and thermo-oxidative resistance with increasing the us time, highlighting that the stability of the nanocomposites can be profitably modulated by controlling the amount of CNT structural defects.

AB - Carbon nanotubes (CNTs) having controlled radical scavenging activity have been achieved tuning the content of their lattice defects induced by an ultra-sound (us) treatment. The reactivity of CNTs, subjected to ultra-sonication for different time intervals, toward 1,1-diphenyl-2-pycryl (DPPH) and hydroxyl (•OH) radicals has been estimated and related to defect concentration, evaluated through Raman spectrometry. The radical scavenging efficiency of ultra-sound treated CNTs (us-CNTs) increases with increasing the content of the structural defects, suggesting that the defect resulting from us treatment can be capitalized to obtain an amplified and controlled radical scavenging activity. The us-CNTs have been incorporated in ultra high molecular weight polyethylene (UHMWPE) matrix by hot compaction with the aim to exploit their anti-oxidant activity against photo- and thermo-oxidative degradation. The us-CNTs containing nanocomposites show progressively improved photo- and thermo-oxidative resistance with increasing the us time, highlighting that the stability of the nanocomposites can be profitably modulated by controlling the amount of CNT structural defects.

KW - Chemistry (all)

UR - http://hdl.handle.net/10447/180537

UR - http://www.journals.elsevier.com/carbon/

M3 - Article

VL - 107

SP - 240

EP - 247

JO - Carbon

JF - Carbon

SN - 0008-6223

ER -