Tailoring the interface in graphene/thermoset polymer composites: A critical review

Rohini, Rani; Katti, Prajakta; Bose, Suryasarathi

doi:10.1016/j.polymer.2015.06.016

Cited by 83 publications

(45 citation statements)

References 83 publications

(72 reference statements)

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“…The electrical conductivity (Sm -1 ) of GNPs, GO and VTMOS-rGO was measured as 1.45 Sm -1 , 6.72 x 10 -7 Sm -1 and 0.040 Sm -1 , respectively. Graphene has planar and hexagonal structures with alternating single and double carbon bonds causing delocalisation of sp 2 carbon electrons that allows zero band gap energy giving rise to the highest relative conductivity.…”

Section: The Concept Of Amines Acting As Nucleophiles Was Supported Bmentioning

confidence: 99%

“…Graphene, an allotrope of carbon, is a monolayer of sp 2 hybridized carbon atoms in a two dimensional lattice and continues to gain intense attention due to its extraordinary intrinsic properties. These include high surface area (>2600 m 2 /g) 1 , exceptional thermal conductivity, (~3000 W m -1 K -1 ) 2 mechanical properties (Young's modulus of 1.0 TPa) [3][4][5] , electrical conductivity (2 x 10 3 S cm -1 ) 6 and 97.7% optical transparency [7][8] . The structure of graphene is that of a densely packed honeycomb structure of individual layers, characterised through singlecrystal X-ray crystallography.…”

Section: Introductionmentioning

confidence: 99%

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Facile silane functionalization of graphene oxide

et al. 2018

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The facile silane functionalization of graphene oxide (GO) was achieved yielding vinyltrimethoxysilane-reduced graphene oxide (VTMOS-rGO) nanospheres located in the inter-layer spacing between rGO sheets via an acid-base reaction using aqueous media. The successful grafting of the silane agent with pendant vinyl groups to rGO was confirmed by a combination of Fourier-transform infrared (FTIR), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD). The structure and speciation of the silane-graphene network (nanosphere) and, the presence of free vinyl groups was verified from solid-state magic angle spinning (MAS) and solution 13C and 29Si nuclear magnetic resonance (NMR) measurements. Evidence from Scanning Electron Microscopy (SEM), High-Resolution Transmission Electron Microscopy (HRTEM) and TEM-High-Angle Annular Dark-Field (TEM-HAADF) imaging showed that these silane networks aided the exfoliation of the rGO layers preventing agglomeration, the interlayer spacing increased by 10 Å. The thermal stability (TGA/DTA) of VTMOS-rGO was significantly improved relative to GO, displaying just one degradation process for the silane network some 300 °C higher than either VTMOS or GO alone. The reduction of GO to VTMOS-rGO induced sp2 hybridization and enhanced the electrical conductivity of GO by 105 S m-1.

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Section: The Concept Of Amines Acting As Nucleophiles Was Supported Bmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Facile silane functionalization of graphene oxide

et al. 2018

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“…[17][18][19] Unfortunately, GN sheets are prone to congregate in composites due to their strong -stacking between sheets and incompatible surface characteristics with the polymer matrices, hindering the application in nanocomposites. 13 Although many GN/polymer systems have been studied, [20][21][22] no literature is available for thermoset GN/UF nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

Intercalation structure and toughening mechanism of graphene/urea‐formaldehyde nanocomposites prepared via in situ polymerization

Liu

et al. 2018

Polymer International

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Based on the industrialized graphene (GN) product, a series of graphene/urea‐formaldehyde nanocomposites were synthesized via in situ polymerization by incorporation of silicon coupling agent with terminal amino groups (SA) as the compatibilizer. The results showed that addition of SA coupling agent led to much more efficient grafting of UF molecules on the GN surface with high layer thickness by formation of hydrogen bonding, and thus complete exfoliation and uniform dispersion of GN were achieved for the composites. Compared with neat UF, the addition of 1.0 wt% GN resulted in a roughly 25% increase in tensile strength and 12% increase in impact strength; meanwhile the impact fracture surfaces of the composite showed obvious ductile fracture characteristics, indicating the reinforcing and toughening effect of GN on the UF matrix. With increasing GN content, the storage modulus, glass transition temperature and crosslinking density of UF increased, while the tan δmax decreased, suggesting that a double crosslinking network structure with GN centered crosslinking point and chemical crosslinking point of UF molecular chains formed, leading to improvement in the stiffness of the composites. The present work showed promising potential for developing high performance UF resin on an industrial scale. © 2017 Society of Chemical Industry

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“…Since grafting reactions of graphene have been developed (Lonkar et al 2014), various functional groups can be covalently bound to graphene. Thus, polymer chains have been covalently bound to graphene nanosheets via "grafting from" and "grafting to" approaches (Rohini et al 2015). In another approach, reactive groups, such as amine groups and epoxide groups, were bound to graphene covalently via grafting reactions, and were involved in formation of matrices.…”

Section: Introductionmentioning

confidence: 99%

Effect of the graft density of cellulose diacetate-modified layered perovskite nanosheets on mechanical properties of the transparent organic–inorganic hybrids bearing covalent bonds at the interface

et al. 2017

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Effect of the graft density of cellulose diacetate-modified layered perovskite nanosheets on mechanical properties of the transparent organic-inorganic hybrids bearing covalent bonds at the interface(Investigation of the effect of the graft density of cellulose diacetate-modified layered perovskite nanosheets on mechanical properties of the transparent organic-inorganic hybrids bearing covalent bonds at the interface)

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Tailoring the interface in graphene/thermoset polymer composites: A critical review

Cited by 83 publications

References 83 publications

Facile silane functionalization of graphene oxide

Facile silane functionalization of graphene oxide

Intercalation structure and toughening mechanism of graphene/urea‐formaldehyde nanocomposites prepared via in situ polymerization

Effect of the graft density of cellulose diacetate-modified layered perovskite nanosheets on mechanical properties of the transparent organic–inorganic hybrids bearing covalent bonds at the interface

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