Scratch Resistance of New Polystyrene Nanocomposites with Ionic Liquid-Modified Multi-walled Carbon Nanotubes

Espejo, Cayetano; Carrión, Francisco J.; Bermúdez, Marı́a-Dolores

doi:10.1007/s11249-013-0212-0

Cited by 16 publications

(17 citation statements)

References 57 publications

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“…The procedure for the elaboration of EMIMTsO+MWCNTs dispersions consisted in the addition of MWCNTs to the ionic liquid in a 1 wt% proportion following the method described previously in [17] and also carried out in our earlier works [13,32]. The materials are weighed and mixed in an agate mortar and the resulting dispersion is manually blended for 10 minutes.…”

Section: Methodsmentioning

confidence: 99%

“…As it can be seen in figure 2b, precipitation occurs after centrifugation and a black precipitate appears at the bottom of the vial and a yellowish suspension (darker than the pure ionic liquid) is present in the upper part. The precipitate is composed by ionic liquid-modified MWCNTs which has been previously described [32] as additive to improve the tribological performance of polymers. The determination of the concentration of MWCNTs in the supernatant was attempted by means of thermogravimetric analysis, Xray diffraction, infrared and visible spectroscopy, and differential scanning calorimetry, but the sensitivity of the methods was not high enough to give a good estimation and the differences between the spectra obtained for the neat ionic liquid and the diluted dispersions were negligible.…”

Section: Methodsmentioning

confidence: 99%

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Rheological behavior of multiwalled carbon nanotube-imidazolium tosylate ionic liquid dispersions

et al. 2017

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The rheological behavior of 1-ethyl-3-methylimidazolium tosylate (EMIMTsO) and its dispersions with aligned and non-aligned multi-walled carbon nanotubes (MWCNTs) has been studied. Raman spectroscopy analysis has been carried out to characterize the samples. The effects of concentration, type of CNTs and temperature on the viscolelastic behavior of EMIMTsO have been evaluated. Regardless the concentration and type of added CNTs, a non-Newtonian behavior of the fluids has been found under shear stress.The ionic liquid and the EMIMTsO-MWCNTs 1 wt% dispersion showed a temperatureinduced gelation. However, the addition of small concentrations of MWCNTs prevents from the formation of gels.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Rheological behavior of multiwalled carbon nanotube-imidazolium tosylate ionic liquid dispersions

et al. 2017

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“…Polymer-matrix nanocomposite materials with ionic liquid-modified carbon nanotubes have been developed [39]. In the case of the brittle polystyrene matrix, the addition of multiwalled carbon nanotubes [40] in a 1 wt % proportion reduces both friction coefficient and abrasion damage under severe scratch conditions.…”

Section: Ionanocarbon Lubricantsmentioning

confidence: 99%

Ionanocarbon Lubricants. The Combination of Ionic Liquids and Carbon Nanophases in Tribology

et al. 2017

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The present overview will focus on the tribological applications of what we have called ionanocarbon lubricants, that is, the combination of carbon nanophases (graphene, carbon nanotubes, nanodiamonds, carbon nanodots) and room-temperature ionic liquids in new dispersions, blends, or modified nanostructures and their use in tribology, lubrication, and surface engineering as friction-reducing, antiwear, and surface-protecting agents in thin films and composite materials. Further research lines and factors that limit the practical applications of the outstanding research results are also highlighted. The very recent results in these lines of research make this a necessary brief review.

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“…Friction coefficients and penetration depths (Pd) were determined along a 3 mm distance, under a progressively increasing normal load between 0 and 30 N, applied by a diamond indenter (200 µm diameter; 120° cone angle), using an inductive probe with a measuring range of ±250 µm and a precision of ±0.5 µm, as previously described [35].…”

Section: Methodsmentioning

confidence: 99%

“…They present a variety of properties such as high thermal stability, a wide electrochemical window, high conductivity, negligible volatility and nonflammability, which make them useful in a variety of applications, from solvents to thermal fluids. From the materials science and surface engineering point of view, ionic liquids have shown outstanding potential as lubricants and lubricant additives including lubrication of light alloys [14,24,[28][29][30][31][32][33][34], nanophase modifiers [35,36], electrolytes [37], corrosion inhibitors [38][39][40][41][42][43][44][45][46][47][48][49] or reagents in the formation of corrosion protective surface coatings [50][51][52].…”

Section: Introductionmentioning

confidence: 99%

Halogen-Free Phosphonate Ionic Liquids as Precursors of Abrasion Resistant Surface Layers on AZ31B Magnesium Alloy

2015

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Surface coatings formed by immersion in the ionic liquids (ILs) 1,3-dimethylimidazolium methylphosphonate (LMP101), 1-ethyl-3-methylimidazolium methylphosphonate (LMP102) and 1-ethyl-3-methylimidazolium ethylphosphonate (LEP102) on magnesium alloy AZ31B at 50 °C have been studied. The purpose of increasing the temperature was to reduce the immersion time, from 14 days at room temperature, to 48 hours at 50 °C. The abrasion resistance of the coated alloy was studied by microscratching under progressively increasing load, and compared with that of the uncoated material. The order of abrasion resistance as a function of the IL is LEP102 > LMP101 > LMP102, which is in agreement with the order obtained for the coatings grown at room temperature. The maximum reduction in penetration depth with respect to the uncovered alloy, of a 44.5%, is obtained for the sample treated with the ethylphosphonate LEP102. However, this reduction is lower than that obtained when the coating is grown at room temperature. This is attributed to the increased thickness and lower adhesion of the coatings obtained at 50 °C, particularly those obtained from methylphosphonate ionic liquids. The results are discussed from SEM-EDX and profilometry.

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Scratch Resistance of New Polystyrene Nanocomposites with Ionic Liquid-Modified Multi-walled Carbon Nanotubes

Cited by 16 publications

References 57 publications

Rheological behavior of multiwalled carbon nanotube-imidazolium tosylate ionic liquid dispersions

Rheological behavior of multiwalled carbon nanotube-imidazolium tosylate ionic liquid dispersions

Ionanocarbon Lubricants. The Combination of Ionic Liquids and Carbon Nanophases in Tribology

Halogen-Free Phosphonate Ionic Liquids as Precursors of Abrasion Resistant Surface Layers on AZ31B Magnesium Alloy

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