Uniform deposition of ultrathin polymer films on the surfaces of Al2O3 nanoparticles by a plasma treatment

Shi, Donglu; Wang, S. X.; Ooij, W.J. van; Wang, L. M.; Zhao, Jiangang; Yu, Zhou

doi:10.1063/1.1352700

Cited by 100 publications

(65 citation statements)

References 12 publications

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“…Plasma nanocoatings/modifications have been used to reduce agglomerations by modifying the surface of nanomaterials [9]. Plasma nanocoating of individual nanoparticles in particular proves effective in breaking up nanoparticle agglomeration [10][11][12][13][14][15][16][17]. Plasma nanocoatings generally contain functional groups which electrostatically prevent agglomeration and can also enhance interactions with the polymer matrix.…”

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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Section: Introductionmentioning

confidence: 99%

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

Ritts

et al. 2011

Polymers

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“…An important factor, that is directly related to the size of nanotubes, is that the surface energy of these particles can be so high, i.e., several hundreds of mJ/m², that the organic monomer is very strongly and uniformly adsorbed on them. It was observed, for instance, in our preliminary work with nanosize Al 2 O 3 and ZnO particles [6][7][8][9]. The film structure is then mainly determined by ion and radiation impact of adsorbed monomer and much less by the radicals formed in the plasma.…”

mentioning

confidence: 83%

“…In our previous works we developed new nano structures by a unique plasma treatment for the synthesis of polymer composites [6][7][8][9][10]. The unique properties required in these composites have been shown to be best achieved by our plasma method.…”

Section: Introductionmentioning

confidence: 99%

Plasma Coating and Enhanced Dispersion of Carbon Nanotubes

Lian

Shi

et al. 2003

MRS Proc.

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Ultrathin polymer films have been deposited on both multi-wall and aligned carbon nanotubes using a plasma polymerization treatment. TEM experimental results showed that a thin film of polystyrene layer (several nanometers) was uniformly deposited on the surfaces of the nanotubes including inner wall surfaces of the multi-wall nanotubes. The coated multi-wall nanotubes were mixed in polymer solutions for studying the effects of plasma coating on dispersion. It was found that the dispersion of multi-wall carbon nanotubes in polystyrene composite was significantly improved. The deposition mechanisms and the effects of plasma treatment parameters are discussed.

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“…Inagaki et al [5] reported surface modification of polyethylene powders using a fluidised bed. Later, van Ooij et al [6][7][8] reported surface modification of various powder substrates using different reactors, which included a vertical tubular reactor, a tumbler reactor and a fluidised bed reactor.…”

Section: Introductionmentioning

confidence: 99%

Mechanistic Investigations of Surface Modification of Carbon Black and Silica by Plasma Polymerisation

Mathew

Datta

Dierkes

et al. 2008

Plasma Chem Plasma Process

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Carbon black is widely used as an active filler in the rubber industry to improve the physical properties of rubber. The surface energy of carbon black is high compared to that of various elastomers like styrene-butadiene rubber (SBR), butadiene rubber (BR) and ethylene-propylene-diene rubber (EPDM). The work aims at reducing the surface energy of carbon black by modifying its surface for application especially in rubber blends. The present paper looks into the possibility of using plasma polymerisation of acetylene as a surface modification technique for carbon black in comparison with silica. Thermogravimetric analysis, wetting behaviour with various liquids of known surface tension and time of flight secondary ion mass spectrometry (ToF-SIMS) were used to characterise the carbon black before and after surface modification. The study shows that surface modification of carbon black by plasma polymerisation is difficult in comparison with silica, unless treated for long duration. The mechanistic aspects of the surface modification and the importance of active sites on the carbon black surface for effective modification are discussed in the paper.

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Uniform deposition of ultrathin polymer films on the surfaces of Al2O3 nanoparticles by a plasma treatment

Cited by 100 publications

References 12 publications

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

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

Plasma Coating and Enhanced Dispersion of Carbon Nanotubes

Mechanistic Investigations of Surface Modification of Carbon Black and Silica by Plasma Polymerisation

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