Preparation of organically dispersible graphene nanosheet powders through a lyophilization method and their poly(lactic acid) composites

Cao, Yiqing; Feng, Jiachun; Wu, Peiyi

doi:10.1016/j.carbon.2010.06.048

Cited by 274 publications

(210 citation statements)

References 33 publications

Supporting

Mentioning

189

Contrasting

Unclassified

Order By: Relevance

“…Apparently, the addition of FGO to the PU matrices could greatly reinforce the thermal stability of the composites, owing to the so-called "tortuous-path" effect of graphene sheets, which delayed the escape of volatile degradation products and char formation [37].…”

Section: Thermal Stabilitymentioning

confidence: 99%

Chemical functionalization of graphene oxide for improving mechanical and thermal properties of polyurethane composites

et al. 2015

View full text Add to dashboard Cite

Section: Thermal Stabilitymentioning

confidence: 99%

Chemical functionalization of graphene oxide for improving mechanical and thermal properties of polyurethane composites

et al. 2015

View full text Add to dashboard Cite

“…In principle, it would be expected that the incorporation of rGO would lead to a stronger reinforcement effect than the incorporation of Graphene Nanoplatelets (xGnP), considering that the rGO exist in an exfoliated individual graphene sheets which had an even higher aspect ratio than xGnP. There are many studies on graphene composites based on a range of polymers available in literature, e.g., polycarbonate [16], Nylon [17], poly(methyl methacrylate) [18], poly(vinylidene fluoride), epoxy [19], poly(vinyl alcohol) [20], polystyrene [21], poly(ethylene disulfide) [22], poly(propylene) [23], poly(lactic acid) [24,25], etc. An investigation on the mechanical aspects of epoxy/xGnP by Chanrasekaran et al [19] showed that effective mechanical reinforcement was achieved for 0.5 wt% with 17% increase in glassy storage modulus.…”

Section: Introductionmentioning

confidence: 99%

Effects of Graphene Nanoplatelets and Reduced Graphene Oxide on Poly(lactic acid) and Plasticized Poly(lactic acid): A Comparative Study

et al. 2014

View full text Add to dashboard Cite

Abstract:The superlative mechanical properties of graphene-based materials make them the ideal filler materials for polymer composites reinforcement. Two types of graphene-based materials, graphene nanoplatelets (xGnP) and reduced graphene oxide (rGO), were used as nanofiller in poly(lactic acid) (PLA) polymer matrix, as well as plasticized PLA. The addition of rGO into PLA or plasticized PLA substantially enhanced the tensile strength without deteriorating elasticity, compared to xGnP nanocomposites. In addition, the investigation of the thermal properties has found that the presence of rGO in the system is very beneficial for improving thermal stability of the PLA or plasticized PLA. Scanning electron microscope (SEM) images of the rGO nanocomposites display homogenous and good uniformity morphology. Transmission electron microscopy (TEM) images revealed that the rGO remained intact as graphene sheet layers and were dispersed OPEN ACCESS Polymers 2014, 6 2233 well into the polymer matrix, and it was confirmed by X-ray diffraction (XRD) results, which shows no graphitic peak in the XRD pattern.

show abstract

“…Table 1 compares the mechanical properties of the PLGA composite fibers with PLGA-based nanocarbon composites in previously published reports (in the form of either films or fibers). The ultimate strength, reported here, was much higher than those reported for PLGA composite with solvent exfoliated graphene [73] , graphene oxide [41][42][43][44][45][46] , graphene nanoplatelet [41,74] , carbon nanotubes [75] and carbon nanofibers [76] . Our average modulus was also considerably higher than all of them.…”

Section: Wet-spinning Of Graphene-plga Biomimetic Fibersmentioning

confidence: 54%

“…Mechanical properties Films 0.2 60 Not reported [42] Graphene nanoplatelet graphene coating on cellulose paper electrical conductivity…”

Section: Plareinforcementmentioning

confidence: 99%

“…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] . Solvent exfoliation of graphite uses a solvent for the exfoliation process to give graphene in the liquid phase (monolayer and few layers) without any additional oxidation step or defect formation [48] .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

Esrafilzadeh

Jalili

Stewart

et al. 2016

Adv Funct Materials

View full text Add to dashboard Cite

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.

show abstract

Preparation of organically dispersible graphene nanosheet powders through a lyophilization method and their poly(lactic acid) composites

Cited by 274 publications

References 33 publications

Chemical functionalization of graphene oxide for improving mechanical and thermal properties of polyurethane composites

Chemical functionalization of graphene oxide for improving mechanical and thermal properties of polyurethane composites

Effects of Graphene Nanoplatelets and Reduced Graphene Oxide on Poly(lactic acid) and Plasticized Poly(lactic acid): A Comparative Study

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

Contact Info

Product

Resources

About