Liquid Crystals of Carbon Compounds

Sonin, A. S.; Churochkina, N. A.; Kaznacheev, A. V.; Голованов, А. В.

doi:10.18083/lcappl.2017.3.5

Cited by 4 publications

(3 citation statements)

References 40 publications

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“…It was found that the stabilization of such solutions is possible with the use of surfactants [11,12], ultrasonic [13] or laser [14] treatment of the solution. It is assumed that a similar effect on the stability of solutions can be observed in the another anisotropic systems [15][16][17][18].…”

Section: Introductionmentioning

confidence: 91%

Influence of the Concentration of Fe and Cu Nanoparticles on the Dynamics of the Size Distribution of Nanoparticles

et al. 2020

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The evolution of the size distribution of nanoparticles depending on the concentration of nanoparticles in a colloidal solution is investigated. The formation of new stable distributions shifted relative to the initial distribution is directly related to the processes of agglomeration of nanoparticles. Using successive two-fold dilutions of nanoparticles by 2–32 times, it was shown that the maximum of the nanoparticle size distribution shifts toward smaller sizes with a decrease in the concentration of nanoparticles, both for distributions by the number of nanoparticles and for distributions by mass of nanoparticles. Thus, with dilutions, the relative concentration of individual nanoparticles increases, while the number of particles in one aggregate decreases. A mathematical model has been created that predicts a change in distribution with a change in the concentration of nanoparticles in a colloid.

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Section: Introductionmentioning

confidence: 91%

Influence of the Concentration of Fe and Cu Nanoparticles on the Dynamics of the Size Distribution of Nanoparticles

et al. 2020

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“…In a previous paper [4], we evaluated the sliding wear resistance of tread rubber elastomers. To stabilize the elastomers, carbon nanotubes (CNT) were used, as it was described in the review article [5] by A. Sonin et al The nanotubes proved to be a rather promising material possessing anisotropic properties characteristic of mineral liquid crystals. The CNT anisotropy manifests itself in the tube ends' orientation resulting in their strong interaction with the molecules of the tread rubber.…”

Section: Introductionmentioning

confidence: 99%

Rolling Wear of Nanostructured Elastomers for Pneumatic Tires

Shilov¹,

Korolev²,

Фомин³

et al. 2019

Liq. Cryst. and their Appl.

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The effect of carbon nanotubes, which inclined to displaying mesomorphism, introduced into elastomers on rolling-sliding wear was investigated. Some tentative conclusions about the correlation between a change in the structure of an elastomeric material and its wear were drawn on the basis of the study of the effect of rolling speed and temperature upon the wear. The tasks for further studies of wear depending on the slip angles were set by the authors. They are meant to be run on a tribological stand and simulated using specialized software.

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“…CNTs graphene layers undergo changes during the formation of functional groups [7]. This phenomenon should be considered even when using functionalized CNTs in systems with liquid crystals [8][9][10][11], since the destruction of CNTs surface layers may change the character of their interactions with the matrix and influence on the nematic phase properties.…”

Section: Introductionmentioning

confidence: 99%

Studying of Structural Changes of Graphene Layers of Carbon Nanotubes Functionalized by Raman Spectroscopy

Dyachkova¹,

Рухов²,

Туголуков³

et al. 2017

Liq. Cryst. and their Appl.

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The effect of oxidizing treatment conditions (concentrated nitric acid, hydrogen peroxide vapor) and direct fluorination on the structural integrity of graphene layers of carbon nanotubes (CNTs) was studied using Raman spectroscopy-based method. Changes in the functionalization of the CNTs defect indices estimated by the intensity of the characteristic peaks: D (1320-1350 cm-1), G (1550-1580 cm-1), 2D (2660 cm-1), D+G (2900 cm-1), and 2G (3200 cm-1) in Raman spectra and their ratios were elucidated. It was established that ordering of the CNTs graphene layers can be observed at the initial stage of various oxidation and fluorination methods. This can be apparently relate to the predominance of the processes of residual amorphous phase removal. Then, the defectiveness indicators begin to grow, thereby indicating the destructive changes in nanotubes during the functionalization. With each chemical treatment method, it is possible to minimize the destruction of the CNTs surface by selecting the process conditions. The CNTs oxidized in hydrogen peroxide vapor are characterized by the most ordered structure of the graphene layers.

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Liquid Crystals of Carbon Compounds

Cited by 4 publications

References 40 publications

Influence of the Concentration of Fe and Cu Nanoparticles on the Dynamics of the Size Distribution of Nanoparticles

Influence of the Concentration of Fe and Cu Nanoparticles on the Dynamics of the Size Distribution of Nanoparticles

Rolling Wear of Nanostructured Elastomers for Pneumatic Tires

Studying of Structural Changes of Graphene Layers of Carbon Nanotubes Functionalized by Raman Spectroscopy

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