Strong and conductive reduced graphene oxide/polyester resin composite films with improved mechanical strength, thermal stability and its antibacterial activity

Bora, Chandramika; Bharali, Pranjal; Baglari, Silpi; Dolui, Swapan Kumar; Konwar, Bolin Kumar

doi:10.1016/j.compscitech.2013.07.025

Cited by 118 publications

(68 citation statements)

References 26 publications

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“…The incorporation of 0.5 wt% of GNs results in a conductivity of PVA/GNs composites of 1.3 × 10 −5 S cm −1 for the solution mixing method, and 6.4 × 10 −7 S cm −1 for the melt compounding method. Such results indicate that GNs significantly increase the electrical conductivity of PVA/GNs composites, which is exemplified by an increase of 6 and 7 orders of magnitudes in comparison to the conductivity of pure PVA . In particular, when 2 wt% of GNs is added, the conductivity of the PVA/GNs composites is 0.003 S cm −1 (the solution mixing method) and 1.4 × 10 −6 S cm −1 (the melt compounding method).…”

Section: Resultsmentioning

confidence: 85%

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Improvement in Mechanical Properties and Electromagnetic Interference Shielding Effectiveness of PVA‐Based Composites: Synergistic Effect Between Graphene Nano‐Sheets and Multi‐Walled Carbon Nanotubes

Lin

Zhao

Pan

et al. 2015

Macro Materials & Eng

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In this study, polyvinyl alcohol (PVA)/graphene nano-sheets (GNs) composites are produced via solution mixing and melt compounding methods, where multi-walled carbon nanotubes (MWCNTs) are added during process. After that, the test results show that PVA/GNs composites composed of 0.25 wt% GNs possess the optimal tensile strength, while the others composed of 2 wt% GNs have a higher thermal stability, electrical conductivity, and electromagnetic interference shielding effectiveness (EMI SE). The addition of MWCNTs provides the PVA/GNs composites with better synergy that can enhance the tensile properties, thermal stability, electrical conductivity, and EMI SE of composites. In comparison to the melt compounding method, the solution mixing method can yield improved properties.

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Section: Resultsmentioning

confidence: 85%

“…For the solution mixing method, the thermal stability is also found proportional to the amount of GNs . The platelets‐like GNs result in thermal insulation, and serve as a barrier to defer the degradation of PVA/GNs composites while increasing their thermal stability …”

Section: Resultsmentioning

confidence: 99%

Improvement in Mechanical Properties and Electromagnetic Interference Shielding Effectiveness of PVA‐Based Composites: Synergistic Effect Between Graphene Nano‐Sheets and Multi‐Walled Carbon Nanotubes

Lin

Zhao

Pan

et al. 2015

Macro Materials & Eng

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“…Regarding the antimicrobial behavior of polymer/GD materials, few polymers had been tested, including poly‐N‐vinylcarbazole (PVK), polyester, chitosan, poly(vinyl alcohol), and PLA. In these cases, GO was mainly used obtaining 100% of antibacterial efficiency at concentrations between 0.2 and 5 wt %.…”

Section: Introductionmentioning

confidence: 99%

Poly(lactic acid) composites based on graphene oxide particles with antibacterial behavior enhanced by electrical stimulus and biocompatibility

Arriagada

Palza

Palma

et al. 2017

J Biomedical Materials Res

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Poly(lactic acid) (PLA) is a biodegradable and biocompatible polyester widely used in biomedical applications. Unfortunately, this biomaterial suffers from some shortcomings related with the absence of both bioactivity and antibacterial capacity. In this work, composites of PLA with either graphene oxide (GO) or thermally reduced graphene oxide (TrGO) were prepared by melt mixing to overcome these limitations. PLA composites with both GO and TrGO inhibited the attachment and proliferation of Escherichia coli and Staphylococcus aureus bacteria depending on the kind and amount of filler. Noteworthy, it is shown that by applying an electrical stimulus to the percolated PLA/TrGO, the antibacterial behavior can be dramatically increased. MTT analysis showed that while all the PLA/GO composites were more cytocompatible to osteoblast-like cells (SaOS-2) than pure PLA, only low content of TrGO was able to increase this property. These tendencies were related with changes in the surface properties of the resulting polymer composites, such as polarity and roughness. In this way, the addition of GO and TrGO into a PLA matrix allows the development of multifunctional composites for potential applications in biomedicine. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 1051-1060, 2018.

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“…Due to its unique electronic structure, carbon is an element available in a variety of structural forms being able to form sp 3 , sp 2 and sp hybridization networks more stable than any other element. Carbon nanomaterials offer a wide range of useful properties such as large specific area [4], excellent electrical conductivity [5], high Young's modulus [6] and thermal conductivity [7]. Raman spectroscopy is an important tool for the characterization of carbon nanomaterials offering valuable information about the existence of structure defects or further functionalization.…”

Section: Introductionmentioning

confidence: 99%

Graphene Nanocomposites Studied by Raman Spectroscopy

Bîru¹,

Iovu²

2018

Raman Spectroscopy

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The goal of this chapter is to provide a general introduction about graphene nanocomposites studied by Raman spectroscopy. The chapter will therefore begin with a brief description of the major Raman bands of carbon allotropes. In the following chapter a concise comparison between single walled carbon nanotubes (SWCNTs), multi-walled carbon nanotubes (MWCNTs), fullerenes and graphene is exposed. The characteristic features in Raman spectra of carbon allotropes, namely the intense signals D and G are investigated. In particular, the chapter will outline the Raman spectrum of graphene and different types of graphene oxide. The last part of the chapter is devoted to graphene nanocomposites.

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Strong and conductive reduced graphene oxide/polyester resin composite films with improved mechanical strength, thermal stability and its antibacterial activity

Cited by 118 publications

References 26 publications

Improvement in Mechanical Properties and Electromagnetic Interference Shielding Effectiveness of PVA‐Based Composites: Synergistic Effect Between Graphene Nano‐Sheets and Multi‐Walled Carbon Nanotubes

Improvement in Mechanical Properties and Electromagnetic Interference Shielding Effectiveness of PVA‐Based Composites: Synergistic Effect Between Graphene Nano‐Sheets and Multi‐Walled Carbon Nanotubes

Poly(lactic acid) composites based on graphene oxide particles with antibacterial behavior enhanced by electrical stimulus and biocompatibility

Graphene Nanocomposites Studied by Raman Spectroscopy

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