Carbon nanotubes with silver nanoparticle decoration and conductive polymer coating for improving the electrical conductivity of polycarbonate composites

Patole, Archana S.; Lubineau, Gilles

doi:10.1016/j.carbon.2014.10.014

Cited by 60 publications

(43 citation statements)

References 43 publications

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“…9 For the coating, different concentrations of (3, 5, 7, and 11 wt %) MWCNT-EDA or Ag/MWCNT-EDA precursors were dispersed into the EP. The synthesis recipes to prepare ethylene diamine-decorated MWCNT (MWCNT-EDA) and Ag-decorated diamine functionalized MWCNTs (Ag/ MWCNT-EDA) were presented previously.…”

Section: Methodsmentioning

confidence: 96%

“…8,9 In particular, chemical functionalization can be used to create two-phase fillers joined together by a coupling agent. As a possible solution to solve both problems, much attention has been paid to the MWCNTs, physical, and chemical functionalization.…”

Section: Introductionmentioning

confidence: 99%

“…By this technique, MWCNTs can be tailored to improve the properties of a polymer nanocomposite. 9 Here, we report on the mechanical and thermal properties of PC nanocomposites with a three-phase filler. Ag is used because it has been shown to improve the inherent thermal properties of MWCNTs.…”

Section: Introductionmentioning

confidence: 99%

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Thermal conductivity and stability of a three‐phase blend of carbon nanotubes, conductive polymer, and silver nanoparticles incorporated into polycarbonate nanocomposites

Patole

Ventura

Lubineau

2015

J of Applied Polymer Sci

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Metallic and non-metallic nanofillers can be used together in the design of polycarbonate (PC) nanocomposites with improved electrical properties. Here, the preparation of three-phase blend (carbon nanotubes (CNT), silver nanoparticles, and conductive polymer) in a two-step process before incorporation in the PC is reported. First, ethylene diamine functionalized multiwall carbon nanotubes (MWCNT-EDA) were decorated with Ag nanoparticles. Next, the Ag-decorated CNTs were coated with poly(3,4ethylenedioxythiophene) polystyrene sulfonate (PEDOT : PSS). Due to the high thermal conductivity instrinsic to both metallic and non-metallic phases, it is expected that the thermal properties of the resulting nanocomposite would largely differ from those of pristine PC. We thus investigated in detail how this hybrid conductive blend affected properties such as the glass transition temperature, the thermal stability, and the thermal conductivity of the nanocomposite. It was found that this strategy results in improved thermal conductivity and thermal stability of the material.

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Section: Methodsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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Thermal conductivity and stability of a three‐phase blend of carbon nanotubes, conductive polymer, and silver nanoparticles incorporated into polycarbonate nanocomposites

Patole

Ventura

Lubineau

2015

J of Applied Polymer Sci

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“…SEM was used to characterize the surface morphologies of the as-obtained PPy, . The values of the peaks is attributed to stretching of carbon nanotube backbone, C=O stretching of COOH group, C-O-C stretching and -CH 2 -stretching mode respectively [37][38][39][40] which provides information about the polar group attached to the MWCNTS after acid treated in HNO 3 /H 2 SO 4 . In case of PPy the bands appear at 1629 cm −1 , 1404 cm −1 ,1550 cm −1 ,1213 cm −1 , 1061 cm −1 .…”

Section: B Dsscs Fabricationmentioning

confidence: 99%

Facile fabrication of novel silver-polypyrrole-multiwall carbon nanotubes nanocomposite for replacement of platinum in dye-sensitized solar cell

et al. 2016

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This paper demonstrates the facile synthesis of high performance silver-polypyrrole-multiwall carbon nanotubes (Ag-PPy-FMWCNTS) nanocomposites via electrodeposition method on stainless steel substrate and its application as a low cost counter electrode (CE) for the precious platinum (Pt) free DSSC. The nanocomposites were characterized by variety of techniques such as Fourier transforms infrared (FTIR), X-ray diffraction, Scanning electron microscope (SEM), cyclic voltammetry (CV) and Four probe technique respectively. The cyclic voltammetry and Tafel polymerization measurements of Ag-PPy-FMWCNTS nanocomposites CE reveal the favorable electrocatalytic activity and low charge transfer resistance Rct(2.50 Ω cm2) for I3−/I− redox solution. The four probe studies showed the large electrical conductivity (226S cm−1) of Ag-PPy-FMWCNTS nanocomposite. The DSSC assembled with Ag-PPy-FMWCNTS nanocomposites CE display the considerable short circuit current density (13.95 mA cm−2) and acceptable solar to electrical conversion efficiency of 7.6%, which is higher to the efficiency of DSSC with thermally decomposed Pt reference electrode 7.1%. The excellent conversion efficiency, rapid charge transfer in combination with low cost and simple fabrication method of Ag-PPy-FMWCNTS nanocomposites can be exploited as an efficient and potential candidate to replace the Pt CE for large scale production of DSSC.

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“…[1][2][3][4][5] It should be noted that the percolation limit, identied as the concentration of the ller at which value or the slope of a materials property suddenly changes, for electrical conduction and a mechanical property, such as stiffness, can be widely different. [10][11][12][13] Unlike electrical and thermal conductivities, which oen show a monotonically increasing variation with the concentration of the conducting llers, 12,13 the mechanical strength of the polymer oen do not vary monotonically with the ller concentration: for example, the strength may decrease with the concentration of llers from the beginning itself or it may rst increase and then decrease at higher concentrations. [7][8][9] In addition to the reduction in the percolation limit, these nanometer sized llers, because of their extremely small sizes, may also interact with the polymeric chains; this provides an extra control for manipulating various physical properties, such as strength, toughness, conductivity, etc.…”

Section: Introductionmentioning

confidence: 99%

Novel architecture for anomalous strengthening of a particulate filled polymer matrix composite

et al. 2015

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We propose an architecture for dramatically enhancing the stress bearing and energy absorption capacities of a polymer based composite. Different weight fractions of iron oxide nano-particles (NPs) are mixed in a poly(dimethylesiloxane) (PDMS) matrix either uniformly or into several vertically aligned cylindrical pillars.These composites are compressed up to a strain of 60% at a strain rate of 0.01 s À1 following which they are fully unloaded at the same rate. Load bearing and energy absorption capacities of the composite with uniform distribution of NPs increase by $50% upon addition of 5 wt% of NPs; however, these properties monotonically decrease with further addition of NPs so much so that the load bearing capacity of the composite becomes 1/6 th of PDMS upon addition of 20 wt% of NPs. On the contrary, stress at a strain of 60% and energy absorption capacity of the composites with pillar configuration monotonically increase with the weight fraction of NPs in the pillars wherein the load bearing capacity becomes 1.5 times of PDMS when the pillars consisted of 20 wt% of NPs. In situ mechanical testing of composites with pillars reveals outward bending of the pillars wherein the pillars and the PDMS in between two pillars, located along a radius, are significantly compressed. Reasoning based on effects of compressive hydrostatic stress and shape of fillers is developed to explain the observed anomalous strengthening of the composite with pillar architecture.

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Carbon nanotubes with silver nanoparticle decoration and conductive polymer coating for improving the electrical conductivity of polycarbonate composites

Cited by 60 publications

References 43 publications

Thermal conductivity and stability of a three‐phase blend of carbon nanotubes, conductive polymer, and silver nanoparticles incorporated into polycarbonate nanocomposites

Thermal conductivity and stability of a three‐phase blend of carbon nanotubes, conductive polymer, and silver nanoparticles incorporated into polycarbonate nanocomposites

Facile fabrication of novel silver-polypyrrole-multiwall carbon nanotubes nanocomposite for replacement of platinum in dye-sensitized solar cell

Novel architecture for anomalous strengthening of a particulate filled polymer matrix composite

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