Strain sensing capabilities of a piezoresistive MWCNT-polysulfone film

Bautista-Quijano, José Roberto; Avilés, F.; Aguilar, Javier; Tapia, Alejandro

doi:10.1016/j.sna.2010.03.005

Cited by 115 publications

(76 citation statements)

References 23 publications

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“…Strong, non-linear piezoresistive behavior, like that exhibited by CNT/PC samples, has been found experimentally [7,6,10] and theoretically [14,15] in materials with easily disrupted percolating network of conductive fillers embedded in a highly resistive matrix. Typically, the tunneling resistance increases exponentially with respect to separation between fillers.…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 73%

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Drastic modification of the piezoresistive behavior of polymer nanocomposites by using conductive polymer coatings

Ventura

Zhou

Lubineau

2015

Composites Science and Technology

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We obtained highly conductive nanocomposites by adding conductive polymer poly(3,4-ethylenedioxythiophene)poly(styrenesulfonate) (PEDOT/PSS)-coated carbon nanotubes (CNTs) to pristine insulating Polycarbonate. Because the PEDOT/PSS ensures efficient charge transfer both along and between the CNTs, we could attribute the improvement in electrical conductivity to coating. In addition to improving the electrical conductivity, the coating also modified the piezoresistive behavior of the nanocomposites compared to the material with pristine uncoated CNTs: whereas CNT/Polycarbonate samples exhibited a very strong piezoresistive effect, PEDOT/PSS-coated MWCNT/Polycarbonate samples exhibited very little piezoresistivity. We studied this change in piezoresistive behavior in detail by investigating various configurations of filler content. We investigated how this observation could be explained by changes in the microstructure and in the conduction mechanism in the interfacial regions between the nanofillers. Our study suggests that tailoring the piezoresistive response to specific application requirements is possible.

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Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 73%

“…The direct consequence is that most CNT-based nanocomposites exhibit intense piezoresistive behavior, leading several research groups to design nanocomposite-based strain sensors [7,6,8,5,9].…”

Section: Introductionmentioning

confidence: 99%

Drastic modification of the piezoresistive behavior of polymer nanocomposites by using conductive polymer coatings

Ventura

Zhou

Lubineau

2015

Composites Science and Technology

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show abstract

“…Abraham et al (Abraham et al, 2008) reported the development and characterization of a CNT-PMMA nanocomposite flexible strain sensor for wearable health monitoring applications. These strain sensors can be used to measure the respiration rhythm which is a -Quijanoa et al, 2010) reported the electrical and piezoresistive responses of thin polymer films made of polysulfone (PSF) modified with 0.05-1% w/w MWCNTs. Gage factors were measured for films with 0.2-1% CNT weight loadings.…”

Section: Thermoplastic-based Nanocompositesmentioning

confidence: 99%

Smart Materials and Structures Based on Carbon Nanotube Composites

Hwang¹,

Park²,

Yoon³

et al. 2011

Carbon Nanotubes - Synthesis, Characterization, Applications

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“…[32][33][34][35][36][37][38][39][40] The focus of this work is electronic transport in nanocomposites. In that regard, an accurate understanding of how CNTs modify electrical properties of an otherwise insulating matrix, can extend their utilization to applications such as electromagnetic interference shielding [41][42][43][44][45][46][47][48], electrostatic reduction [13], and strain sensing for structural health monitoring [27,[49][50][51][52][53][54][55][56][57][58][59][60][61], to mention some examples.…”

Section: Introductionmentioning

confidence: 99%