Complex permittivity of composites based on dielectric matrices with carbon nanotubes

Усанов, Д. А.; Skripal, A. V.; Romanov, A. A.

doi:10.1134/s1063784211010257

Cited by 27 publications

(5 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Basing on paper [ 29 ] where experimental concentration dependencies of real and complex parts of dielectric permittivity of the composites with fine graphite and carbon nanotubes were described by the Nielsen formula and equations. …”

Section: Resultsmentioning

confidence: 99%

Electrical Properties of Composite Materials with Electric Field-Assisted Alignment of Nanocarbon Fillers

et al. 2017

View full text Add to dashboard Cite

The article reports about electric field-induced alignment of the carbon nanoparticles embedded in epoxy matrix. Optical microscopy was performed to consider the effect of the electric field magnitude and configuration, filler morphology, and aspect ratio on alignment process. Characteristic time of aligned network formation was compared with modeling predictions. Carbon nanotube and graphite nanoplatelet rotation time was estimated using an analytical model based on effective medium approach. Different depolarization factor was applied according to the geometries of the particle and electric field.Solid nanocomposites were fabricated by using AC electric field. We have investigated concentration dependence of electrical conductivity of graphite nanoplatelets/epoxy composites using two-probe technique. It was established that the electrical properties of composites with random and aligned filler distribution are differ by conductivity value at certain filler content and distinguish by a form of concentration dependence of conductivity for fillers with different morphology. These differences were explained in terms of the dynamic percolation and formation of various conductive networks: chained in case of graphite nanoplatelets and crossed framework in case of carbon nanotubes filler.

show abstract

Section: Resultsmentioning

confidence: 99%

Electrical Properties of Composite Materials with Electric Field-Assisted Alignment of Nanocarbon Fillers

et al. 2017

View full text Add to dashboard Cite

show abstract

“…As is known, the method of functionalization of a nanocarbon filler surface can be used for the solution of this problem. The functionalization of a nanocarbon surface creates favorable conditions for the uniform dis- tribution of a nanocarbon filler in the polymer matrix and provides the strong connection between filler particles and the polymer matrix [1][2][3]. The most common method to obtain functional groups on the surface of a nanocarbon filler is the covalent functionalization.…”

Section: Introductionmentioning

confidence: 99%

Infrared Spectroscopy of Ultraviolet-Irradiated Carbon Nanotubes

Ovsiienko¹,

Len²,

Matzui³

et al. 2020

Ukr. J. Phys.

View full text Add to dashboard Cite

The possibility of using the UV irradiation for a functionalization of carbon nanotubes with different degrees of structural perfection is considered. In investigations, the method of infrared spectroscopy is used. A change in the number of functional groups under the short-term UV irradiation of specimens with multiwall carbon nanotubes is estimated by a change in the relative intensity of the IR spectral bands corresponding to vibrations of the functional groups in comparison with the relative intensity of the band corresponding to vibrations of the carbon atoms in graphite.

show abstract

“…As a result, the properties of nanocarbon surface change. The functionalization of nanocarbon surface creates favorable conditions for uniform distribution of nanocarbon filler in polymer matrix and provides the strong connection between filler particles and polymer matrix . There are the covalent and noncovalent functionalizations.…”

Section: Introductionmentioning

confidence: 99%

Influence of chemical treatment on the microstructure of nanographite

Ovsiienko

Lazarenko

Matzui

et al. 2014

Phys. Status Solidi A

View full text Add to dashboard Cite

The methods of functionalization of carbon nanotubes and thermally exfoliated graphite by inorganic and organic compounds, which allow obtaining of oxygen‐containing groups on the nanocarbon surface were proposed. The influence of chemical treatment on the internal structure and surface morphology of nanocarbon is analyzed. The electron microscopy, Raman spectroscopy, and IR spectroscopy methods were used for investigating the structure and qualitative composition of functional groups on the chemically treated nanocarbons surface. The presented data reveal some modification of the typical nanocarbon Raman bands such as disorder band (D band), the graphite band (G band). But the changes of nanocarbon structure under chemical treatment are not dramatic.

show abstract

Complex permittivity of composites based on dielectric matrices with carbon nanotubes

Cited by 27 publications

References 8 publications

Electrical Properties of Composite Materials with Electric Field-Assisted Alignment of Nanocarbon Fillers

Electrical Properties of Composite Materials with Electric Field-Assisted Alignment of Nanocarbon Fillers

Infrared Spectroscopy of Ultraviolet-Irradiated Carbon Nanotubes

Influence of chemical treatment on the microstructure of nanographite

Contact Info

Product

Resources

About