Chemically converted graphene: scalable chemistries to enable processing and fabrication

Gambhir, Sanjeev; Jalili, Rouhollah; Officer, David L.; Wallace, Gordon G.

doi:10.1038/am.2015.47

Cited by 75 publications

(49 citation statements)

References 120 publications

(164 reference statements)

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“…Moreover, the thermal, mechanical and optical properties made graphene a choice of material to be used for wide variety of applications [41][42][43][44][45][46]. Graphene oxide (GO) produced by chemical method, can be manufactured in large scale [47][48][49]. The aim of this study is to investigate methods to generate high conductivity, abrasion resistant coatings on non-woven fabric using a dip coating method.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of a graphene coated nonwoven textile for industrial applications

et al. 2016

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A cost effective electrically conductive textile for large scale applications would revolutionise numerous industries. Herein, we demonstrate a novel processing approach to produce conductive textiles for industrial applications. A conductive nonwoven textile was successfully fabricated using a simple dip coating method. The nonwoven polyester was coated with liquid crystallite graphene oxide with subsequent non-toxic chemical reduction. The process is readily scalable. The graphene coated fabric has been characterized by electron microscopy as well as by electrical, mechanical, thermal and abrasion resistance measurements. It was found that the electrical surface resistivity of the prepared polyester-graphene composite fabric was 330 Ω □-1. The electrical surface resistivity was 3 and 150 times lower than that of polypyrrole coated woven polyester fabric and graphene coated nonwoven fabrics, respectively, in previously published reports. The hybrid polyester-graphene textile prepared here should find applications in high-performance geotextiles or as heating elements. Fabrication of Graphene Coated Nonwoven Textile for Industrial ApplicationsDharshika Kongahge, Javad Foroughi * , Sanjeev Gambhir, Geoffrey M. Spinks, Gordon G. Wallace A cost effective electrically conductive textile for large scale applications will revolutionise many industries. Herein, we demonstrate a novel processing approach to produce conductive textiles for industrial applications. The conductive nonwoven textile was successfully fabricated using a simple dip coating method. The polyester nonwoven was coated with liquid crystallite graphene oxide with subsequent non-toxic chemical reduction. The process is readily scalable. The graphene coated fabric has been characterized by electron microscopy as well as electrical, mechanical, thermal and abrasion resistance measurements. It was found that the electrical surface resistivity of the prepared polyester-graphene composite fabric was 330 Ω/□. The electrical surface resistivity was 3 and 150 times lower than that of polypyrrole coated woven polyester fabric and graphene coated nonwoven fabrics which were published previously. The hybrid polyestergraphene textile prepared here should find application as high-performance geotextiles or as heating elements.

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Section: Introductionmentioning

confidence: 99%

Fabrication of a graphene coated nonwoven textile for industrial applications

et al. 2016

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“…The application of carbon nanotubes has been restricted due to toxicity issues, arising from cellular uptake and induced oxidative stress to cells [20][21][22] as well as agglomeration during processing. On the other hand, graphene based materials have had a profound impact in the biomedical field thanks to their excellent electrical conductivity, high mechanical strength, ease of functionalization with biomolecules, ability to induce electrical conductivity to biopolymers and facile processing [22][23][24][25][26][27] . Graphene has also been shown to increase cell proliferation [28] and is able to be excreted from the body through the renal system, phagocytosis and endocytosis indicating its suitability for implantation [29][30][31][32] .…”

Section: Introductionmentioning

confidence: 99%

“…The liquid-phase processing method deals with the exfoliation of powdered graphite to provide graphene derivatives in a liquid by either chemical oxidation or solvent exfoliation. Oxidative exfoliation of graphite results in a processable, but, non-conducting form of graphene, the so-called graphene oxide (GO) [23] . GO-based composites are favorable when the target is to improve the mechanical performance, although the inherent conductivity of graphene can be partially restored [35,[41][42][43][44][45][46][47] .…”

Section: Introductionmentioning

confidence: 99%

High‐Performance Multifunctional Graphene‐PLGA Fibers: Toward Biomimetic and Conducting 3D Scaffolds

Esrafilzadeh

Jalili

Stewart

et al. 2016

Adv Funct Materials

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The development of electrically conducting fibers based on known cytocompatible materials is of interest to those engaged in tissue regeneration using electrical stimulation. Herein, it is demonstrated that with the aid of rheological insights, optimized formulations of graphene containing spinnable poly(lactic-co-glycolic acid) (PLGA) dopes can be made possible. This helps extend the general understanding of the mechanics involved in order to deliberately translate the intrinsic superior electrical and mechanical properties of solutionprocessed graphene into the design process and practical fiber architectural engineering. The as-produced fibers are found to exhibit excellent electrical conductivity and electrochemical performance, good mechanical properties, and cellular affinity. At the highest loading of graphene (24.3 wt%), the conductivity of as-prepared fibers is as high as 150 S m-1 (more than two orders of magnitude higher than the highest conductivity achieved for any type of nanocarbon-PLGA composite fibers) reported previously. Moreover, the Young's modulus and tensile strength of the base fiber are enhanced 647-and 59-folds, respectively, through addition of graphene. Disciplines Engineering | Physical Sciences and Mathematics Publication DetailsEsrafilzadeh, D., Jalili, R., Stewart, E. M., Aboutalebi, S. H., Razal, J. M., Moulton, S. The development of electrically conducting fibers based on known cytocompatible materials is of interest to those engaged in tissue regeneration using electrical stimulation. Herein, we demonstrate that with the aid of rheological insights, optimized formulations of graphene 2 containing spinnable Poly Lactic-co-Glycolic Acid (PLGA) dopes can be made possible. This helps us extend our general understanding of the mechanics involved in order to deliberately translate the intrinsic superior electrical and mechanical properties of solution-processed graphene into the design process and practical fiber architectural engineering. The asproduced fibers were found to exhibit excellent electrical conductivity, and electrochemical performance, good mechanical properties, and cellular affinity. At the highest loading of graphene (24.3 wt. %), the conductivity of as-prepared fibers was as high as 150 S m −1 (more than 2 orders of magnitude higher than the highest conductivity achieved for any type of nanocarbon-PLGA composite fibers) reported previously. Moreover, the Young's modulus and tensile strength of the base fiber were enhanced 647-and 59-folds, respectively, through addition of graphene.

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“…[ 21 ] As a highly oxidized derivate of graphite, it is easily processed in aqueous solutions [22][23][24][25] and synthesized in large quantity, [ 20,26 ] and it is applied in several biotechnological platforms. [ 27 ] The GO monolayer is also a high tunable nanomaterial given the lateral size [ 28 ] and the oxidation degree, [ 29 ] which are pivotal marks of the 2D carbon structure.…”

Section: Introductionmentioning

confidence: 99%

On‐the‐Spot Immobilization of Quantum Dots, Graphene Oxide, and Proteins via Hydrophobins

Gravagnuolo

Morales‐Narváez

Matos

et al. 2015

Adv Funct Materials

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Class I hydrophobin Vmh2, a peculiar surface active and versatile fungal\ud protein, is known to self-assemble into chemically stable amphiphilic fi lms,\ud to be able to change wettability of surfaces, and to strongly adsorb other\ud proteins. Herein, a fast, highly homogeneous and effi cient glass functionalization\ud by spontaneous self-assembling of Vmh2 at liquid–solid interfaces is\ud achieved (in 2 min). The Vmh2-coated glass slides are proven to immobilize\ud not only proteins but also nanomaterials such as graphene oxide (GO) and\ud quantum dots (QDs). As models, bovine serum albumin labeled with Alexa\ud 555 fl uorophore, anti-immunoglobulin G antibodies, and cadmium telluride\ud QDs are patterned in a microarray fashion in order to demonstrate functionality,\ud reproducibility, and versatility of the proposed substrate. Additionally, a\ud GO layer is effectively and homogeneously self-assembled onto the studied\ud functionalized surface. This approach offers a quick and simple alternative to\ud immobilize nanomaterials and proteins, which is appealing for new bioanalytical\ud and nanobioenabled applications

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Chemically converted graphene: scalable chemistries to enable processing and fabrication

Cited by 75 publications

References 120 publications

Fabrication of a graphene coated nonwoven textile for industrial applications

Fabrication of a graphene coated nonwoven textile for industrial applications

High‐Performance Multifunctional Graphene‐PLGA Fibers: Toward Biomimetic and Conducting 3D Scaffolds

On‐the‐Spot Immobilization of Quantum Dots, Graphene Oxide, and Proteins via Hydrophobins

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