Surface modification of carbon nanotubes with ethylene glycol plasma

Ávila‐Orta, Carlos A.; Crúz-Delgado, Víctor J.; Neira‐Velázquez, María Guadalupe; Hernández‐Hernández, Ernesto; Méndez-Padilla, M.G.; Medellín‐Rodríguez, F. J.

doi:10.1016/j.carbon.2009.02.033

Cited by 65 publications

(30 citation statements)

References 24 publications

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“…In this sense, the surface modification of CNPs by means of plasma polymerization represents an innovative and sustainable alternative, because it is fast and simple and is performed in the absence of solvents (dry process). For example, CNPs have been coated with an ultrathin polypropylene layer when propylene monomer in the vapor phase was fed into and polymerized in a plasma reactor and deposited as an ultrathin film on the surface of the CNPs [24,25]. On another study, Zhao et al produced a change in the surface properties of CNTs via plasma treatment using an argon-oxygen gas mixture as feed into the plasma reactor.…”

Section: Introductionmentioning

confidence: 99%

“…However, a slight decrease in the sp 2 hybridization was observed after the plasma treatment, which, on the other hand, indicated that polymerized gases such as acrylic acid tend to produce a coating without significantly affecting the surface structure of the substrate. In a similar way, other researches have been treated CNPs by plasma polymerization using different monomers to coat carbon nanostructures [24,28,29]. Plasma technology also has been used recently to modified graphene materials and novel properties have been found as a result of this plasma treatment such as photoluminescence [30] and semiconductivity [31] and selective detection for biosensors [32,33].…”

Section: Introductionmentioning

confidence: 99%

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Surface Modification of Carbon Nanofibers and Graphene Platelets Mixtures by Plasma Polymerization of Propylene

Covarrubias-Gordillo¹,

Soriano‐Corral²,

Ávila‐Orta³

et al. 2017

Journal of Nanomaterials

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Carbon nanofibers (CNFs), graphene platelets (GPs), and their mixtures were treated by plasma polymerization of propylene. The carbon nanoparticles (CNPs) were previously sonicated in order to deagglomerate and increase the surface area. Untreated and plasma treated CNPs were analyzed by dynamic light scattering (DLS), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, and thermogravimetric analysis (TGA). DLS analysis showed a significant reduction of average particle size, due to the sonication pretreatment. Plasma polymerized propylene was deposited on the CNPs surface; the total amount of polymerized propylene was from 4.68 to 6.58 wt-%. Raman spectroscopy indicates an increase in the sp 3 hybridization of the treated samples, which suggest that the polymerized propylene is grafted onto the CNPs.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Surface Modification of Carbon Nanofibers and Graphene Platelets Mixtures by Plasma Polymerization of Propylene

Covarrubias-Gordillo¹,

Soriano‐Corral²,

Ávila‐Orta³

et al. 2017

Journal of Nanomaterials

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“…The inert argon (Ar) plasma produces an efficient etching and cleaning process of CNTs [13] and can activate the surface of CNTs allowing the subsequent grafting of polymer [14,15]. The CNTs can be also coated with different plasma polymer films [16][17][18][19][20]. In function of the nature of the polymer grafted onto CNTs, different organic compounds such as aniline, phenol or 1-naphtol and inorganic pollutants such as Pb(II) or UO 2 2+ can be removed from aqueous solution in contact with the formed CNT composites [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Selective Grafting of Primary Amines onto Carbon Nanotubes via Free-Radical Treatment in Microwave Plasma Post-Discharge

et al. 2012

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Abstract:A novel strategy to graft functional groups at the surface of carbon nanotubes (CNTs) is discussed. Aiming at grafting nitrogen containing groups, and more specifically primary amine covalent functionalization, CNTs were exposed under atomic nitrogen flow arising from an Ar + N 2 microwave plasma. The primary amine functions were identified and quantified through chemical derivatization with 4-(trifluoromethyl)benzaldehyde and characterized through X-ray photoelectron spectroscopy. The increase of the selectivity in the primary amines grafting onto CNTs, up to 66.7% for treatment of CNT powder, was performed via the reduction of post-treatment oxygen contamination and the addition of hydrogen in the experimental set-up, more particularly in the plasma post-discharge chamber. The analyses of nitrogenated and primary amine functions grafting on the CNT surface suggest that atomic nitrogen (N•) and reduced nitrogen species (NH• and NH 2 •) react preferentially with defect sites of CNTs and, then, only atomic nitrogen continues to react on the CNT surface, creating defects. OPEN ACCESSPolymers 2012, 4 297

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“…These methods range from low pressure plasmas to atmospheric plasmas, such as corona discharge to dielectric barrier discharge, etc. [18][19][20][21][22]. Utilizing plasma methods to treat or modify nanomaterials can widen the range of polymer matrix possibilities, and studying/tailoring those coatings/modifications can increase the nanofillers's dispersion in polymer matrices and enhance the filler/matrix interfacial bonding in order to achieve the desired properties of the resulted polymer nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

Plasma Treated Multi-Walled Carbon Nanotubes (MWCNTs) for Epoxy Nanocomposites

Ritts

et al. 2011

Polymers

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Plasma nanocoating of allylamine were deposited on the surfaces of multi-walled carbon nanotubes (MWCNTs) to provide desirable functionalities and thus to tailor the surface characteristics of MWCNTs for improved dispersion and interfacial adhesion in epoxy matrices. Plasma nanocoated MWCNTs were characterized using scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HR-TEM), surface contact angle, and pH change measurements. Mechanical testing results showed that epoxy reinforced with 1.0 wt % plasma coated MWCNTs increased the tensile strength by 54% as compared with the pure epoxy control, while epoxy reinforced with untreated MWCNTs have lower tensile strength than the pure epoxy control. Optical and electron microscopic images show enhanced dispersion of plasma coated MWCNTs in epoxy compared to untreated MWCNTs. Plasma nanocoatings from allylamine on MWCNTs could significantly enhance their dispersion and interfacial adhesion in epoxy matrices. Simulation results based on the shear-lag model derived from micromechanics OPEN ACCESSPolymers 2011, 3 2143 also confirmed that plasma nanocoating on MWCNTs significantly improved the epoxy/fillers interface bonding and as a result the increased composite strength.

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Surface modification of carbon nanotubes with ethylene glycol plasma

Cited by 65 publications

References 24 publications

Surface Modification of Carbon Nanofibers and Graphene Platelets Mixtures by Plasma Polymerization of Propylene

Surface Modification of Carbon Nanofibers and Graphene Platelets Mixtures by Plasma Polymerization of Propylene

Selective Grafting of Primary Amines onto Carbon Nanotubes via Free-Radical Treatment in Microwave Plasma Post-Discharge

Plasma Treated Multi-Walled Carbon Nanotubes (MWCNTs) for Epoxy Nanocomposites

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