Straightforward synthesis of conductive graphene/polymer nanocomposites from graphite oxide

Vuluga, Daniela; Thomassin, Jean‐Michel; Molenberg, Isabel; Huynen, Isabelle; Gilbert, Bernard; Jérôme, Christine; Alexandre, Michaël; Detrembleur, Christophe

doi:10.1039/c0cc04623j

Cited by 81 publications

(52 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since the electrical and thermal conductivity of these composites strongly rely on electron and phonon percolation between the separated filler particles141516, a good dispersion of graphene sheets and high filler content are required to form a conductive interconnected network in the insulating polymer matrix to improve the conductivity of the composites17.…”

mentioning

confidence: 99%

Highly Electrically Conductive Nanocomposites Based on PolymerInfused Graphene Sponges

Samad

Polychronopoulou

et al. 2014

Sci Rep

View full text Add to dashboard Cite

Conductive polymer composites require a threedimensional 3D network to impart electrical conductivity. A general method that is applicable to most polymers for achieving a desirable graphene 3D network is still a challenge. We have developed a facile technique to fabricate highly electrical conductive composite using vacuumassisted infusion of epoxy into graphene sponge GS scaffold. Macroscopic GSs were synthesized from graphene oxide solution by a hydrothermal method combined with freeze drying. The GSepoxy composites prepared display consistent isotropic electrical conductivity around 1Sm, and it is found to be close to that of the pristine GS. Compared with neat epoxy, GSepoxy has a 12ordersofmagnitude increase in electrical conductivity, attributed to the compactly interconnected graphene network constructed in the polymer matrix. This method can be extended to other materials to fabricate highly conductive composites for practical applications such as electronic devices, sensors, actuators, and electromagnetic shielding.

show abstract

mentioning

confidence: 99%

Highly Electrically Conductive Nanocomposites Based on PolymerInfused Graphene Sponges

Samad

Polychronopoulou

et al. 2014

Sci Rep

View full text Add to dashboard Cite

show abstract

“…So, it needs to be filled with various fillers to achieve optimum properties for practical purposes. Among a variety of reinforcing fillers, graphene (GE) as a new type of nanofiller has attracted increasing interest since it has a thin-layered 2D structure, high specific surface area, excellent mechanical properties, thermal properties and electrical properties [1][2][3]. The excellent mechanical properties of the natural rubber would be attributed to strain-induced crystallization (SIC) [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Natural rubber/graphene oxide composites: Effect of sheet size on mechanical properties and strain-induced crystallization behavior

Wu¹,

Lin²,

Tang³

et al. 2015

Express Polym. Lett.

View full text Add to dashboard Cite

Abstract. In order to analyze the influence of the lateral size of graphene oxide (GO) on the properties of natural rubber/ graphene oxide (NR/GO) nanocomposites, three different sized graphene oxide sheets, namely G1, G2 and G3 were used to fabricate a series of NR/GO nanocomposites by latex mixing. The results indicate that adding GO can remarkably increase the modulus of NR. The enhancement of modulus is strongly dependent on the size of GO sheets incorporated. G1 with smallest sheet size gives the maximum reinforcement effect compared with G2 and G3. Dynamic mechanical measurement and swelling ratios (Q f /Q g ) indicate that G1 has stronger interfacial interaction with NR. XRD shows G1 is more effective in accelerating the strain-induced crystallization (SIC) of NR. The strong interfacial interaction facilitates the stress transfer and strain-induced crystallization, both of which lead to the improved modulus.

show abstract

“…Reduction of GO creates a partially reduced version of graphite oxide (r-GO) which is significantly more conductive than GO (Gilje et al, 2007;Yang et al, 2009). Nanocomposites of GO-polymer have also been studied (Tung et al, 2011;Vuluga et al, 2011). The hydrophilic nature of GO and its layered structure make it a good host for water-soluble or water-dispersible polymers to intercalate inside the GO lattice.…”

Section: Introductionmentioning

confidence: 99%

X-ray diffraction characterization of polymer intercalated graphite oxide

Blanton

Majumdar

2012

Powder Diffr.

View full text Add to dashboard Cite

Graphite oxide (GO) is generated by treating graphite with strong oxidizers. GO retains the structure of graphite, but does so with a larger and irregular basal plane spacing. The oxidation of graphite results in the formation of epoxide groups, as well as C-OH and COOH groups. It is the presence of some of these moieties that allows GO to be dispersed in water, allowing for its use in waterborne formulations. Although GO does not possess the electrical properties of single-sheet graphene, it can be swelled in water, which allows for intercalation of hydrophilic polymer between GO sheets, resulting in a composite that can be coated to produce a continuous film. After coating it may be possible to chemically convert GO to a reduced graphite oxide (r-GO) with improved electrical conductivity. X-ray diffraction (XRD) is ideally suited to evaluate GO-polymer composite samples for evidence of intercalation or exfoliation of GO. Examples of GO-polymer analysis by XRD are presented, along with results that demonstrate the effect of relative humidity (RH) on neat GO. Knowing the ambient RH during XRD data collection was found to be important to correctly assess the extent of polymer intercalation within the GO lattice.

show abstract

Straightforward synthesis of conductive graphene/polymer nanocomposites from graphite oxide

Cited by 81 publications

References 35 publications

Highly Electrically Conductive Nanocomposites Based on PolymerInfused Graphene Sponges

Highly Electrically Conductive Nanocomposites Based on PolymerInfused Graphene Sponges

Natural rubber/graphene oxide composites: Effect of sheet size on mechanical properties and strain-induced crystallization behavior

X-ray diffraction characterization of polymer intercalated graphite oxide

Contact Info

Product

Resources

About