SELECTIVE LOCALIZATION OF CARBON NANOTUBES IN IMMISCIBLE BLENDS OF POLY(TRIMETHYLENE TEREPHTHALATE) AND ETHYLENE-VINYL ACETATE COPOLYMERS

The effect of irradiation on the mechanical properties of Epoxidized Natural Rubber/Ethylene Vinyl Acetate/Carbon Nanotubes (ENR/EVA/CNTs) nanocomposites were investigated. CNTs at various amount (2, 3, 4 and 6 wt%) were incorporated into ENR50 by solvent casting method. The ENR/CNTs were then blended with EVA by mixing in a Brabender Plasticoder at 120°C. Next, the samples were irradiated by using electron beam with 3 MeV electron beam machine in a dose range of 50 to 200 kGy. The mechanical properties such as tensile strength (Ts), modulus at 100% elongation (M100), elongation at break (Eb) and hardness of reinforced ENR/EVA/CNTs nanocomposites were studied as a function of radiation dose. It was found that, the Ts and M100 has increased almost 2 times compared to the nanocomposites without irradiation up to 150 kGy dose of radiation, and a downward trend thereafter. Gel fraction further confirmed the powerful energy of electron beam radiation result in irradiation-induced crosslinking and further enhanced mechanical properties of the nanocomposites.

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Dielectric Properties of Ethylene Vinyl Acetate Copolymer Composites Filled with Carbon Nanotubes, Graphene Nanoplatelets and Iron Oxide Nanoparticles

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.800.195 ◽

2019 ◽

Vol 800 ◽

pp. 195-199

Author(s):

Anda Barkāne ◽

Sergejs Gaidukovs ◽

Jānis Kajaks ◽

Oskars Platnieks

Keyword(s):

Carbon Nanotubes ◽

Vinyl Acetate ◽

Multiwall Carbon Nanotubes ◽

Ethylene Vinyl Acetate ◽

Specific Electrical Conductivity ◽

Compression Moulding ◽

Passive Components ◽

Nanoparticle Effect ◽

Acetate Copolymer ◽

Ethylene Vinyl Acetate Copolymer

Ethylene vinyl-acetate copolymer (EVA) composite materials containing multiwall carbon nanotubes (MWCNT), graphene (Gr) and iron (III, IV) oxide (Fe3O4) nanoparticles where processed by melt blending. Film specimens were prepared by using compression moulding method. All nanoparticles content in samples was chosen equal to 20 wt.%. The material dielectric spectroscopy was used in a range of 10-2 Hz to 107 Hz to investigate nanoparticle effect on the dielectric active (ε’) and passive components (ε’’), specific electrical conductivity (σ’) and dielectric loss (tg) for the characterization of the dissipation of electromagnetic energy.

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Selective localization of carbon nanotubes at the interface of Poly(L-lactide)/Ethylene-co-vinyl Acetate resulting in lowered electrical resistivity

Composites Part B Engineering ◽

10.1016/j.compositesb.2013.07.012 ◽

2013 ◽

Vol 55 ◽

pp. 463-469 ◽

Cited By ~ 54

Author(s):

Yun-yun Shi ◽

Jing-hui Yang ◽

Ting Huang ◽

Nan Zhang ◽

Chen Chen ◽

...

Keyword(s):

Carbon Nanotubes ◽

Electrical Resistivity ◽

Vinyl Acetate ◽

Selective Localization

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Self-healing performance of lightweight and electrically conductive ethylene-vinyl acetate copolymer/carbon nanotubes composite foam

Composites Communications ◽

10.1016/j.coco.2021.101051 ◽

2021 ◽

pp. 101051

Author(s):

Zhen Yu ◽

Cong Wang ◽

Xin Zhang ◽

Ajit Dattatray Phule ◽

Yongxian Zhao ◽

...

Keyword(s):

Carbon Nanotubes ◽

Vinyl Acetate ◽

Ethylene Vinyl Acetate ◽

Self Healing ◽

Electrically Conductive ◽

Composite Foam ◽

Acetate Copolymer ◽

Ethylene Vinyl Acetate Copolymer

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Influence of Functionalization of Multi-Walled Carbon Nanotubes on the Properties of Ethylene Vinyl Acetate Nanocomposites

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2008.18256 ◽

2008 ◽

Vol 8 (4) ◽

pp. 1913-1921 ◽

Cited By ~ 2

Author(s):

Jinu Jacob George ◽

Rajatendu Sengupta ◽

Anil K. Bhowmick

Keyword(s):

Carbon Nanotubes ◽

Vinyl Acetate ◽

Functional Groups ◽

Photoelectron Spectroscopy ◽

Surface Defects ◽

Ethylene Vinyl Acetate ◽

Radial Breathing Mode ◽

Multiwalled Carbon ◽

Band Ratio ◽

X Ray

Commercially available multiwalled carbon nanotubes (MWNT) were chemically modified by amine, acid and silane and their ethylene vinyl acetate (EVA) based nanocomposites were prepared. Unmodified and modified nanotubes were characterized by thermogravimetry, X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy and transmission electron microscopy. Early degradation of modified nanotubes from the thermogravimetry study proved the presence of functional groups on nanotube surface. Increase in D-band to G-band ratio and a shift in radial breathing mode peaks from the Raman spectra indicated the generation of surface defects due to functionalization and variation in van der Waals force of attraction between nanotube aggregates on modification. The unmodified nanotubes improved the tensile strength by 30% with 4 weight% of filler. Amine modification imparted further increase in strength due to the presence of functional groups on the nanotube surface and the subsequent better dispersion of the nanotubes in the polymer matrix. The silane treatment imparted maximum improvement in various properties of the nanocomposites. The nanotubes provided better thermal degradation stability and also higher thermal conductivity to virgin EVA. The results were well supported by the morphological as well as swelling study of the various samples.

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