Strength dependence of epoxy composites on the average filler size of non-oxidized graphene flake

Kim, Jin; Kim, Jung Mo; Song, Sung-Ho; Zhang, Shuye; Cha, Jihoon; Kim, Ki-Sun; Yoon, Hyewon; Jung, Yeonwoong; Paik, Kyung‐Wook; Jeon, Seokwoo

doi:10.1016/j.carbon.2016.11.023

Cited by 69 publications

(49 citation statements)

References 50 publications

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“…The 2 SLG/Au sample showed the largest angular shift of 0.61 ± 0.02°, and the overall streptavidin sensing results from other samples also followed the trend obtained from RI sensing, except for NOGF (Figure e). In the case of NOGF/Au substrate, the S RI showed as high as 2 SLG/Au; however, the FoM and streptavidin sensing results were moderate, which can be mainly due to the intercalating salt remaining on the surface of the NOGF films . The concentration‐dependent SPR angle shift was monitored using 1 SLG and 2 SLG on Au using streptavidin with concentration of 5–500 × 10 −9 m (Figure f).…”

Section: Resultsmentioning

confidence: 99%

“…While NOGF offers superior intrinsic properties to rGO, monolayer NOGF with large surface coverage on Au film was difficult to obtain, showing a higher FWHM . X‐ray diffraction spectrum of NOGF on Au film shows a peak at 28.2° corresponding to the (002) plane of graphitic carbon, indicating that a thick layer of NOGF was deposited . In case of the graphene layers by CVD synthesis, a distinctive XRD pattern could not be obtained due to its ultrathin structure.…”

Section: Resultsmentioning

confidence: 99%

“…rGO and N‐rGO with controlled thickness were transferred onto Au film by a previously reported method. [15b] NOGF was prepared as reported previously, and deposited on Au film …”

Section: Methodsmentioning

confidence: 99%

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Enhancing the Performance of Surface Plasmon Resonance Biosensor via Modulation of Electron Density at the Graphene–Gold Interface

Chung

Lee

Kim

et al. 2018

Adv Materials Inter

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Surface plasmons at a metal/dielectric interface resonate with incident light, generating an evanescent field at the interface, which is highly sensitive to the change in refractive index of the medium. These characteristics are utilized as the basis for surface plasmon resonance‐based sensors with Kretschmann configuration, providing label‐free and real‐time monitoring of binding interaction between probe and target moieties. Although graphene is recently extensively investigated in the field of optical sensors for the improvement of sensing performance, the proposed enhancement mechanisms in each study are ambiguous and inconsistent. Here, graphene‐deposited Au film as advanced plasmonic sensing substrates is reported. Work function measurements of Au–graphene with different number of layer and doping state explicitly corroborate the mechanism of sensitivity increase, confirming that the enhanced refractive index sensitivity originates from induced surface dipole due to the charge transfer between Au film and graphene. The best sensitivity is attained from two layers of graphene by a chemical vapor deposition method. Biotinylated bovine serum albumin and streptavidin are used to evaluate the biosensing performance.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Enhancing the Performance of Surface Plasmon Resonance Biosensor via Modulation of Electron Density at the Graphene–Gold Interface

Chung

Lee

Kim

et al. 2018

Adv Materials Inter

Self Cite

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“…In Figure a, GnPs of 25 µm in lateral dimension improved the flexural modulus of epoxy more dramatically than those of 5 µm in lateral dimension. [136a] Recently, Jeon and co‐workers reported that epoxy composites with GnPs having lateral dimension over 1 µm exhibited a lot higher tensile strength than neat epoxy . More follow‐up research is needed to reproduce such an increase in tensile strength.…”

Section: Polymer/graphene Compositesmentioning

confidence: 99%

Graphene Platelets and Their Polymer Composites: Fabrication, Structure, Properties, and Applications

Shi

Araby

Gibson

et al. 2018

Adv Funct Materials

200

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Graphene oxide is extensively compounded with polymers toward a wide variety of applications. Less studied are few-layer or multi-layer highly crystalline graphene, both of which are herein named as graphene platelets. This article aims to provide the most recent advancements of graphene platelets and their polymer composites. A first focus lies on cost-effective fabrication strategies of graphene platelets -intercalation and exfoliation -which work in a relative mass scale, e.g., 5.3 g h −1 . As no heavy oxidization is involved, the platelets have high crystalline integrity, e.g., C:O ratio over 8.0, with thicknesses 2-4 nm and lateral dimension up to a few micrometers. Through carefully selecting the solvent for dispersion and the molecules for surface modification, graphene platelets can be liquid-processable, enabling them to be printed, coated, or compounded with various polymers. A purposedesigned experiment is undertaken to unravel the effect of reasonable ultrasonication time on the platelet thickness. Typical polymer/graphene platelet composites are critically examined for their preparation, structure, and applications such as thermal management and flexible/stretchable electronic devices. Perspectives on the limitations, current challenges, and future prospects for graphene platelets and their polymer composites are provided.

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“…Carbon nanotubes (CNTs) have a unique set of properties, including excellent thermal and electrical conductivities, high mechanical properties, high aspect ratios, and optical and magnetic properties. Due to their excellent properties, CNTs have a preeminent place in nanomaterials, finding a wide scope of possible applications in composites , field emission devices , biosensors , electronic components , and probe tips . However, their high aspect ratio and strong van der Waals binding energies make them prone to entanglement and bundling.…”

Section: Introductionmentioning

confidence: 99%

Effect of surfactants on MWNT filled elastomer composites by latex mixing

Song

2017

Polymer Engineering & Sci

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The recent interest in advanced elastomer composites has led to an intensive study of nanomaterials, which exhibit a range of excellent chemical and physical properties. The advent of carbon nanotubes (CNTs) has created attractive opportunities for developing novel high performance nanomaterials. However, due to their strong van der Waals binding energies, CNTs have a tendency to aggregate, and so disaggregation and homogeneous dispersion remain critical challenges to the synthesis of successful elastomer composites. Here, we prepared a non‐covalently functionalized CNT suspension using a surfactant, without degrading the physical and chemical properties of the CNTs. Furthermore, the suspension was mixed with styrene butadiene rubber (SBR) latex to enhance the dispersion of the CNTs in the elastomer matrix. The eco‐friendly, cost‐effective, and scalable preparation method shows great potential for the production of elastomer nanocomposites. The successful homogenous dispersion of the MWNT in the SBR matrix resulted in composites with outstanding mechanical, thermal, and electrical properties at low loadings. Furthermore, to confirm their potential use in green (uncured) tyre applications, we employed them directly as fillers in the tread compounds of a pneumatic tyre, which exhibited enhanced abrasion, wet grip, and rolling resistance performance. This research opens new opportunities for preparing high performance elastomer composites for future industrial applications. POLYM. ENG. SCI., 58:1843–1848, 2018. © 2017 Society of Plastics Engineers

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Strength dependence of epoxy composites on the average filler size of non-oxidized graphene flake

Cited by 69 publications

References 50 publications

Enhancing the Performance of Surface Plasmon Resonance Biosensor via Modulation of Electron Density at the Graphene–Gold Interface

Enhancing the Performance of Surface Plasmon Resonance Biosensor via Modulation of Electron Density at the Graphene–Gold Interface

Graphene Platelets and Their Polymer Composites: Fabrication, Structure, Properties, and Applications

Effect of surfactants on MWNT filled elastomer composites by latex mixing

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