A manufacturing perspective on graphene dispersions

Johnson, D. W.; Dobson, Ben P.; Coleman, Karl S.

doi:10.1016/j.cocis.2015.11.004

Cited by 362 publications

(230 citation statements)

References 265 publications

Supporting

Mentioning

224

Contrasting

Unclassified

Order By: Relevance

“…Polydispersity index is requires to be minimized and provides an information that this dispersion is monodisperse or not [43]. Zeta potential values which should be minimized are critical parameter that shows the dispersion stability [26,44]. The dispersions with a zeta potential value of less than -30 mV are considered strongly as stable [45].…”

Section: Identifying Conditions Of Dispersions 41 Determination Critmentioning

confidence: 99%

Improvement of the Graphene Oxide Dispersion Properties with the Use of TOPSIS Based Taguchi Application

Şimşek

Ultav

Korucu

et al. 2018

Period. Polytech. Chem. Eng.

View full text Add to dashboard Cite

[20]. In many industrial applications, the stability of graphene oxide dispersions plays a crucial role for the proper solvent preparation. Therefore, many researchers have done the studies to understand the dispersion behavior and to improve the dispersion stability. Konios et al. [21] prepared GO and reduced graphene oxide (rGO) dispersions with the different solvents and they showed that the GO and rGO samples forms a stable dispersion with the deionized-water, ethylene glycol and N-methyl-2-pyrrolidone (NMP). Taha-Tijerina et al. [22] prepared a dispersion with the deionized-water, ethylene glycol, ethanol and mineral oil and they illustrated that the GO samples forms a strong stable dispersion with the deionized-water and ethylene glycol. Graphene oxide-deionized water nano-fluids are more attractive options because of the formation of fairly strong stable dispersions with graphene oxide in the deionized water and the elimination of toxic solvents such as NMP.The quality of the dispersions including "strong stability" can be represented with some criteria such as zeta potential value, thermal and electrical conductivity, pH, and particle size. Therefore, many studies have been done to analyze the GO dispersion properties. The average particle size and zeta potential value [22] [29] were analyzed without using any systematic analyzing such an experimental design approach. It has been determined that oxidants and pH of the

show abstract

Section: Identifying Conditions Of Dispersions 41 Determination Critmentioning

confidence: 99%

Improvement of the Graphene Oxide Dispersion Properties with the Use of TOPSIS Based Taguchi Application

Şimşek

Ultav

Korucu

et al. 2018

Period. Polytech. Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…While graphene oxide can be readily dispersed in aqueous solutions, graphene and rGO require appropriate organic solvents [11]. N -methyl-2-pyrrolidone (NMP) is perhaps the ideal solvent for the exfoliation of graphite and graphene.…”

Section: Resultsmentioning

confidence: 99%

A biofunctionalizable ink platform composed of catechol-modified chitosan and reduced graphene oxide/platinum nanocomposite

Sobolewski

Goszczyńska

Aleksandrzak

et al. 2017

Beilstein J. Nanotechnol.

View full text Add to dashboard Cite

We present an ink platform for a printable polymer–graphene nanocomposite that is intended for the development of modular biosensors. The ink consists of catechol-modified chitosan and reduced graphene oxide decorated with platinum nanoparticles (rGO–Pt). We modified the chitosan with catechol groups, in order to obtain adhesive properties and improve solubility. Dispersions of rGO–Pt in ethylene glycol were admixed with an aqueous solution of modified chitosan to yield an ink that is suitable for non-contact piezoelectric printing using a commercial microplotter (Sonoplot GIX Microplotter Desktop). As a proof of concept, printed patterns were biofunctionalized with DNA oligonucleotide probes for Streptococcus agalactiae (Group B streptococcus) using glutaraldehyde as a linker. Confocal microscopy revealed the successful hybridization of complementary polymerase chain reaction (PCR) products and low non-specific binding. Our results demonstrate that catechol-modified chitosan/rGO–Pt nanocomposites can be used as inks for piezoelectric printing and facilitate the attachment of biorecognition elements for biosensor applications.

show abstract

“…These groups enable the formation of a very stable colloidal dispersion by electrostatic repulsion. Removal of these functional groups from the graphene sheets induces very rapid re‐aggregation of the sheets . The sheet core is similar to pristine graphene with an elevated level of defects .…”

Section: Introductionmentioning

confidence: 99%

Simple route for the preparation of graphene/poly(styrene‐b‐butadiene‐b‐styrene) nanocomposite films with enhanced electrical conductivity and hydrophobicity

Kepić

Ristić

Marinović‐Cincović

et al. 2018

Polymer International

View full text Add to dashboard Cite

This paper reports a simple route for the preparation of graphene/poly(styrene‐b‐butadiene‐b‐styrene) (SBS) nanocomposite films employing a vacuum filtration method. Graphene is exfoliated well by an electrochemical procedure and homogeneously dispersed in the polymer matrix. The prepared nanocomposite films were characterized by XRD, Fourier transform IR (FTIR) spectroscopy, X‐ray photoelectron spectroscopy (XPS), Raman spectroscopy, AFM and SEM. Morphological studies showed that graphene formed a smooth coating over the surface of SBS. The increase in graphene concentration induces the wrinkling of graphene sheets at the composite surface which causes a further increase in surface roughness. The FTIR, Raman and XPS spectra of graphene/SBS nanocomposite films indicate the strong interactions between graphene and the polymer matrix. According to the XRD patterns, introducing SBS into graphene did not modify the graphene structure additionally, i.e. the crystal lattice parameters do not depend on SBS content in graphene/SBS nanocomposite films. The graphene/SBS nanocomposite films also exhibited better hydrophobicity due to the increased surface roughness and lower sheet resistivity (reduced 10 times) compared to exfoliated graphene. © 2018 Society of Chemical Industry

show abstract

A manufacturing perspective on graphene dispersions

Cited by 362 publications

References 265 publications

Improvement of the Graphene Oxide Dispersion Properties with the Use of TOPSIS Based Taguchi Application

Improvement of the Graphene Oxide Dispersion Properties with the Use of TOPSIS Based Taguchi Application

A biofunctionalizable ink platform composed of catechol-modified chitosan and reduced graphene oxide/platinum nanocomposite

Simple route for the preparation of graphene/poly(styrene‐b‐butadiene‐b‐styrene) nanocomposite films with enhanced electrical conductivity and hydrophobicity

Contact Info

Product

Resources

About