Fabrication of functionalized graphene filled carboxylated nitrile rubber nanocomposites as flexible dielectric materials

Manna, Rakesh; Srivastava, Suneel Kumar

doi:10.1039/c6qm00025h

Cited by 42 publications

(25 citation statements)

References 48 publications

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“…Our hybrid filler (HMM) with a percolation threshold value of 1 wt% is much superior to the individual nanofillers like CNF, MWCNT, and EG. Comparison of our results with those by Manna et al on XNBR/graphene, Petrova et al on PP/MWCNT/clay (rheological percolation threshold 1.5 wt%) and Kuzhir et al on epoxy/MWCNT/expanded graphite (electrical percolation threshold 2.0 wt%) hybrid nanocomposite systems, confirms superior performance of our system with the lowest percolation limit. The comparative dielectric properties are contained in Table .…”

Section: Resultssupporting

confidence: 87%

“…Covalent functionalization , noncovalent modification , and use of room temperature ionic liquids have been attempted as means of improving CNT dispersion. Noncovalent functionalization does not affect the structural properties of the material, but covalent modification involves formation of strong covalent bonds between nanotubes and polymers . Alternatively, efforts have been made to improve the dispersion of the nanotubes in the polymer matrix by using 3D fillers obtained by hybridization of 1D and 2D fillers.…”

Section: Introductionmentioning

confidence: 99%

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Multiwalled carbon nanotube/montmorillonite hybrid filled ethylene‐co‐vinyl acetate nanocomposites with enhanced mechanical properties, thermal stability, and dielectric response

Bhuyan

Roy²,

Srivastava

et al. 2017

Polymer Engineering & Sci

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Homogeneous multiwalled carbon nanotube/montmorillonite hybrid filler (HMM) dispersion was prepared by co‐ultrasonication and was subsequently used to prepare ethylene‐co‐vinyl acetate (EVA) nanocomposites by solution blending method. XRD and TEM analysis of HMM confirm significant interaction between the montmorillonite (MMT) layers and multiwalled carbon nanotubes (MWCNT) in line with previous reports. Analysis of the nanocomposites shows the constituent fillers to be homogeneously dispersed in EVA matrix. Mechanical properties of neat EVA are remarkably improved with HMM content up to 3 wt% followed by reversion. Maximum improvement observed in tensile strength, elongation at break, and toughness are 424%, 109%, and 1122%, respectively. Results show maximum thermal stability at 4 wt% and best dielectric response at 1 wt% HMM content. Exceptional mechanical and dielectric properties of EVA nanocomposites attained may be attributed to homogeneous dispersion of fillers and improved polymer–filler interaction. Comparison shows excellent synergy between MWCNT and MMT towards mechanical reinforcement of EVA. POLYM. ENG. SCI., 58:1155–1165, 2018. © 2017 Society of Plastics Engineers

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Section: Resultssupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Multiwalled carbon nanotube/montmorillonite hybrid filled ethylene‐co‐vinyl acetate nanocomposites with enhanced mechanical properties, thermal stability, and dielectric response

Bhuyan

Roy²,

Srivastava

et al. 2017

Polymer Engineering & Sci

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“…These high performance rubbers exhibit excellent abrasion/ adhesion resistance and superior mechanical properties for their wide range of applications. NBR is not crystallizable under high strain, and therefore the reinforcing fillers are generally incorporated to yield sufficiently high mechanical properties [ 91 , 92 , 93 , 94 , 95 , 96 , 97 , 98 , 99 , 100 , 101 , 102 , 103 , 104 , 105 , 106 , 107 , 108 , 109 , 110 , 111 , 112 , 113 , 114 , 192 , 193 , 194 , 195 , 196 ]. Chougule and Giese [ 93 ] reported significant mechanical reinforcing effects of CNT as compared with CB in NBR due to good dispersion and effective interaction.…”

Section: Mechanical Properties Of Rubber Nanocomposites Of Carbon mentioning

confidence: 99%

Nanocarbon Reinforced Rubber Nanocomposites: Detailed Insights about Mechanical, Dynamical Mechanical Properties, Payne, and Mullin Effects

Srivastava

Mishra

2018

Nanomaterials

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The reinforcing ability of the fillers results in significant improvements in properties of polymer matrix at extremely low filler loadings as compared to conventional fillers. In view of this, the present review article describes the different methods used in preparation of different rubber nanocomposites reinforced with nanodimensional individual carbonaceous fillers, such as graphene, expanded graphite, single walled carbon nanotubes, multiwalled carbon nanotubes and graphite oxide, graphene oxide, and hybrid fillers consisting combination of individual fillers. This is followed by review of mechanical properties (tensile strength, elongation at break, Young modulus, and fracture toughness) and dynamic mechanical properties (glass transition temperature, crystallization temperature, melting point) of these rubber nanocomposites. Finally, Payne and Mullin effects have also been reviewed in rubber filled with different carbon based nanofillers.

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“…In recent years, various amine based chemicals have been used to modify GO. These include ammonia [ 17 ], cetylamine [ 18 ], octadecylamine [ 19 ], ethidenediamine [ 20 ], poly-o-phenylenediamine [ 21 ], and amino acids [ 22 ]. For instance, Shanmugharaj et al [ 23 ] used alkylamines with different chain lengths as modifiers and mixed them with GO under ultrasonic conditions at normal temperature, followed by suction filtration during the first reaction stage.…”

Section: Introductionmentioning

confidence: 99%

Effect of Reaction Temperature on Structure, Appearance and Bonding Type of Functionalized Graphene Oxide Modified P-Phenylene Diamine

et al. 2018

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In this study, graphene oxides with different functionalization degrees were prepared by a facile one-step hydrothermal reflux method at various reaction temperatures using graphene oxide (GO) as starting material and p-phenylenediamine (PPD) as the modifier. The effects of reaction temperature on structure, appearance and bonding type of the obtained materials were investigated by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). The results showed that when the reaction temperature was 10–70 °C, the GO reacted with PPD through non-covalent ionic bonds (–COO−H3+N–R) and hydrogen bonds (C–OH…H2N–X). When the reaction temperature reached 90 °C, the GO was functionalized with PPD through covalent bonds of C–N. The crystal structure of products became more ordered and regular, and the interlayer spacing (d value) and surface roughness increased as the temperature increased. Furthermore, the results suggested that PPD was grafted on the surface of GO through covalent bonding by first attacking the carboxyl groups and then the epoxy groups of GO.

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Fabrication of functionalized graphene filled carboxylated nitrile rubber nanocomposites as flexible dielectric materials

Abstract: XNBR/GNS–HDA nanocomposites exhibited enhanced tensile strength, elongation at break, reduced Young's modulus and high dielectric constants at low dielectric loss.

Cited by 42 publications

References 48 publications

Multiwalled carbon nanotube/montmorillonite hybrid filled ethylene‐co‐vinyl acetate nanocomposites with enhanced mechanical properties, thermal stability, and dielectric response

Multiwalled carbon nanotube/montmorillonite hybrid filled ethylene‐co‐vinyl acetate nanocomposites with enhanced mechanical properties, thermal stability, and dielectric response

Nanocarbon Reinforced Rubber Nanocomposites: Detailed Insights about Mechanical, Dynamical Mechanical Properties, Payne, and Mullin Effects

Effect of Reaction Temperature on Structure, Appearance and Bonding Type of Functionalized Graphene Oxide Modified P-Phenylene Diamine

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