Nonisothermal Crystallization and Melting Behavior of EVA/OMWNTs Nanocomposites

Xu, Guoyong; Min, Kai

doi:10.1080/03602559.2014.935402

Cited by 2 publications

(2 citation statements)

References 46 publications

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“…37 CNT addition to EVA forms the interphase with hindered chain mobility that may efficiently disrupt the crystals’ nucleation and growth in the composite as compared with the neat EVA. 35 The interphase development by CNT incorporation corresponds well with the observed glass transition T g increase and polymer density ρ poly decrease (see Table 1). The polymer density in the composite is obtained by the following equation (1): 31…”

Section: Resultssupporting

confidence: 72%

“…The polymer crystallinities were computed using the reference of 293 (J/g). 35 The crystallinity degree of the neat EVA is 16.7%; whereas the crystallinity value decreases with increasing CNT content in EVA/CNT because of the strong interaction between polymer and nanotubes and formation of the interphase polymer. 36 However, the action of CNTs on the crystallinity of the polymers is inconsistent.…”

Section: Resultsmentioning

confidence: 97%

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Enhanced mechanical, conductivity, and dielectric characteristics of ethylene vinyl acetate copolymer composite filled with carbon nanotubes

Gaidukovs

Zukulis

Bochkov

et al. 2017

Journal of Thermoplastic Composite Materials

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We report high mechanical, dielectric, and thermal performance of carbon nanotubes (CNT) reinforced ethylene vinyl acetate (EVA) composites, fabricated using conventional melt extrusion processing. CNT have extremely high stiffness, electrical conductivity, and surface area, ensuring strong interactions with the polymer and effective reinforcement. The addition of CNT to EVA leads to an extremely high yield strength and Young’s modulus of the composites. The EVA composite produced, containing 5 wt% CNT, exhibited an almost 3-fold increase in Young’s modulus and a 2.2-fold improvement of yield strength compared to neat EVA. However, the composite maintained high deformation properties—a ductility of 1300%. Scanning electron microscopy analysis evidences the agglomeration of the CNT in the EVA/CNT composites. The EVA/CNT composites gained excellent electrostatic discharge properties—a surface resistivity in the range of 108 Ω/square. The observed thermal conductivity of the composites was increased by about 30% without losing the electrically insulating performance.

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Section: Resultssupporting

confidence: 72%

Section: Resultsmentioning

confidence: 97%

Enhanced mechanical, conductivity, and dielectric characteristics of ethylene vinyl acetate copolymer composite filled with carbon nanotubes

Gaidukovs

Zukulis

Bochkov

et al. 2017

Journal of Thermoplastic Composite Materials

View full text Add to dashboard Cite

show abstract

Investigation on the physicochemical properties of poly (ethylene-co-vinyl acetate)/mesoporous silica nanocomposites: Effects of content and surface functionalization

Lasmi,

Zoukrami,

A Marcos Fernández

2024

Journal of Thermoplastic Composite Materials

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In this study, poly (ethylene-co-vinyl acetate)/mesoporous silica EVA/SBA-15 nanocomposites, containing 0.5, 1.5, and 2.5 wt% of unfunctionalized and functionalized SBA-15 were prepared by melt blending in an internal mixer. Mesoporous silica was synthesized through the sol-gel method and modified by hexadecyltrimethoxysilane (HDTMS). Several characterizations were performed; including Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), mechanical properties, dynamic mechanical analysis (DMA), and dielectric study to characterize the physicochemical properties of elaborated materials. The results revealed the successful synthesis and functionalization of mesoporous silica, as confirmed by the FTIR and SEM. The crystallinity of the nanocomposites decreased and the elastic modulus increased with the incorporation of the mesoporous silica. Measurement of tensile properties shows that the tensile strength of the nanocomposite content of 1.5 wt% F-SBA-15 is 17.2% is higher as compared to pure EVA. DMA analysis validates the improvement in mechanical properties of the EVA/SBA-15 samples. SEM images displayed well-dispersed F-SBA-15 nanoparticles and enhanced interfacial adhesion between the phases. TGA indicates the enhancement of the thermal stability of nanocomposites as compared with the pure EVA matrix. The surface functionalization presented an approach to preparing nanocomposites with enhanced thermal stability and a low dielectric constant.

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Nonisothermal Crystallization and Melting Behavior of EVA/OMWNTs Nanocomposites

Cited by 2 publications

References 46 publications

Enhanced mechanical, conductivity, and dielectric characteristics of ethylene vinyl acetate copolymer composite filled with carbon nanotubes

Enhanced mechanical, conductivity, and dielectric characteristics of ethylene vinyl acetate copolymer composite filled with carbon nanotubes

Investigation on the physicochemical properties of poly (ethylene-co-vinyl acetate)/mesoporous silica nanocomposites: Effects of content and surface functionalization

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