Formation of carbon sp3 hybridization bonds in local electric fields of composites “polymer-CNT”

Карачевцева, Л. А.; Кartel, M. T.; Wang, Bo; Sementsov, Yu. I.; Viacheslav, Trachevskyi; Lytvynenko, O. O.; Onyshchenko, V.F.

doi:10.5185/amlett.2018.1964

Cited by 4 publications

(2 citation statements)

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“…The characteristics of this luminescence permit its assignment to the radiation emitted in recombination of ruptured C-C bonds in polymer chains [9]. The photoluminescence of polyethyleneimine with carbon multiwall nanotubes on silicon structures was investigated in [10]. High photoluminescence intensity of composite was measured due to low non-radiative proton recombination [11] on boundary microporous layer and "polymer -nanoparticles" nanocoating.…”

Section: Introductionmentioning

confidence: 99%

Carbon sp3 hybridization bonds in composites “polymer – CNT”

Кartel¹,

Карачевцева²,

Wang³

et al. 2019

Him. Fiz. Tehnol. Poverhni

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The possibilities to enhance the properties of nanostructured surfaces have been demonstrated on "polymermultiwall carbon nanotubes" composites. Carbon nanotubes are among the most anisotropic materials known and have extremely high values of the Young modulus. Influence of sp 3 hybridization bonds on polymer crystallization and strengthening was investigated in composite films of polyethyleneimine, polyamide and polypropylene with multiwall carbon nanotubes. IR absorption maxima were measured after formation of composite "polyethyleneimine-carbon nanotubes" in the area of the sp 3 hybridization bonds at the frequency of primary amino groups of polyethyleneimine. High IR absorption at frequencies of sp 3 hybridization bonds of polypropylene, polyamide-6 with carbon nanotubes is determined by γ ω (CН) and γ ω (CH 2) vibrations as a result of the formation of CC bonds in the polymer chains, which increases the crystallization of polymers and the strength of the composites. The IR absorption peak dependences on the carbon nanotube content at frequencies of sp 3 hybridization bonds are described by a 1D Gaussian curve for the diffusion equation in the electric field. Thus, the way to improve the strength properties of "polymer-CNTs" composites is the polymer crystallization as a result of the transformation of the CC bonds in the polymer chains supported by the resonances of the primary amino groups, γ ω (CH) and γ ω (CH 2) in the electric field between the nanotubes and polymer matrix. Tensile strength for polyamide-6 composites at 0.25 % CNT increases 1.7 times and tensile deformation-2.3 times.

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Section: Introductionmentioning

confidence: 99%

Carbon sp3 hybridization bonds in composites “polymer – CNT”

Кartel¹,

Карачевцева²,

Wang³

et al. 2019

Him. Fiz. Tehnol. Poverhni

View full text Add to dashboard Cite

show abstract

“…The characteristics of this luminescence permit its assignment to the radiation emitted in recombination of ruptured C-C bonds in polymer chains [10]. The photoluminescence of polyethylenimine with carbon multiwall nanotubes on silicon structures was investigated in [11]. High photoluminescence intensity of composite was measured due to low non-radiative proton recombination on boundary microporous layer and "polymer-nanoparticle" nanocoating.…”

Section: Introductionmentioning

confidence: 99%

“Semiconductor” Model of the “Polymer-CNTs” Composite Strengthening

Liudmyla¹,

Mykola²,

Wang³

et al. 2019

IJMSA

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We analyzed "semiconductor" model of the "polymer-CNTs" composite strengthening at 300 K and low (0.1-0.5) wt% CNTs concentration. Carbon nanotubes are among the most anisotropic materials known and have extremely high values of Young's modulus. We investigated influence of vibration bonds on polymer crystallization and strengthening in composite films of polyethylenimine, polyamide, polypropylene and rubber with multiwall carbon nanotubes. IR absorbance maxima we evaluated after formation of composite "polyethylenimine-carbon nanotube" in the spectral area of the sp 3 hybridization bonds at the frequency of primary amino groups of polyethylenimine. High IR absorption in the spectral area of sp 3 hybridization bonds of polypropylene, polyamide-6 with carbon nanotubes is determined by γ ω (CН) and γ ω (CH 2) vibrations. We measured IR reflectance maxima of composite "rubber-carbon nanotube" in the spectral area of CH valence and deformation vibrations. The IR peak dependence on the carbon nanotube content corresponds to 1D Gaussian curve for the diffusion equation in the electric field between electrons of nanotubes and protons in polymer according to "semiconductor" model of the composite structuring. For our case of the long-acting hundreds nanometer interactions, the polymer crystallization depends on sp 3 CC bonds organization in the intrinsic electric field according to the semiconductor n-p model. Tensile strength for polyamide-6 composites at 0.25% CNTs increases 1.7 times and tensile deformation-2.3 times.

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Hong-Ou-Mandel quantum effect on rubber-cnt composites

Карачевцева¹,

Trachevskiy²,

Lytvynenko³

et al. 2023

Him. Fiz. Tehnol. Poverhni

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We investigated influence of multiwalled carbon nanotubes (CNT) on spectral characteristics of composites “rubber-carbon nanotubes”on the base of butadiene-nitrile rubber at 0–10 % of CNTs. IR reflectance maxima of composites were measured in the spectral area of the rubber CH deformation and valence vibrations. IR absorption spectra of composites “rubber-carbon nanotubes” after vulcanization includes some giant two-polar oscillations. IR absorption spectrum of composites “rubber-carbon nanotubes” at 1 % of CNTs without vulcanization includes the alone two-polar oscillation. Two-photon interference is a result of quantum entanglement of dipole-active vibrations and photon splitting according to Hong-Ou-Mandel (HOM) quantum effect. Two-photon maximal entanglement saturation is called as Bell states. HOM quantum effect is perspective for high-coherent optical quantum computers on composites “rubber-carbon nanotubes”.

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Formation of carbon sp3 hybridization bonds in local electric fields of composites “polymer-CNT”

Cited by 4 publications

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Carbon sp3 hybridization bonds in composites “polymer – CNT”

Carbon sp3 hybridization bonds in composites “polymer – CNT”

“Semiconductor” Model of the “Polymer-CNTs” Composite Strengthening

Hong-Ou-Mandel quantum effect on rubber-cnt composites

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