Determination of the electrical behaviour of surfactant treated polymer/carbon black composite gas sensors

Arshak, K.; Moore, Eric G.; Cavanagh, L.M.; Harris, John A.; McConigly, B.; Cunniffe, C.; Lyons, G.M.; Clifford, Seamus

doi:10.1016/j.compositesa.2004.10.015

Cited by 50 publications

(24 citation statements)

References 10 publications

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“…The reason for the use of a surfactant is so large conducting islands are not separated by large insulating phases (polymer binder) thereby reducing the amount of conduction paths through the film. Arshak et al 3 reported the electrical behaviour of PS3 treated polymer/carbon black films which were used in a gas sensing application. The authors showed how the agglomeration of particles was eliminated by using such a surfactant, and also how this lead to an overall improvement in sensor performance.…”

Section: Resultsmentioning

confidence: 99%

Effects of Polymer Binder, Surfactant and film Thickness on pH Sensitivity of Polymer Thick Film Sensors

Gill

Arshak

et al. 2009

Procedia Chemistry

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Measuring the change of the conductivity of a Polyaniline (PANI) film while in contact with a solution is considered to be a costeffective tool for pH sensing. The device consists of a PANI film deposited between two identical electrodes, reducing the number of fabrication steps. To ensure the sensors display an optimum response to solutions of different pH values, it is important to understand the effect of the polymer binder, surfactant and film thickness. The effect of varying the amount of Polyvinyl butyral (PVB) and Hypermer (PS3) on the pH sensitivity of screen printed thick film sensors is reported.

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Section: Resultsmentioning

confidence: 99%

Effects of Polymer Binder, Surfactant and film Thickness on pH Sensitivity of Polymer Thick Film Sensors

Gill

Arshak

et al. 2009

Procedia Chemistry

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“…[1][2][3][4][5][6][7][8][9][10][11][12] We are focusing in the present work on composites of conducting particles embedded in an insulating elastomer matrix. The matrix is compressed by the action of an externally applied uniaxial pressure keeping constant the amount of conducting particles, a process that increases the electrical conductance of the composite, which can be used for obtaining a pressure sensor.…”

Section: Introductionmentioning

confidence: 99%

A model for the dependence of the electrical conductance with the applied stress in insulating-conducting composites

Negri

Rodríguez

Bernik

et al. 2010

Journal of Applied Physics

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A model for the dependence of the electrical conductance, G, with the strain induced by external mechanical stress in conducting particles-polymer composites is presented. The model assumes that the percolation probability between neighboring particles must depart from a scale-invariant behavior but saturate at moderated-high strains, reaching percolation path's saturation, with sigmoid dependence. This dependence is obtained by proposing a dynamic picture where contacts or bonds between neighboring particles are created but also destructed when a stress is applied and relatively moderated or high strains, , are produced in the composite. The electrical conductance of prepared graphite-polydimethylsiloxane composites were measured as function of the applied pressure and fitted by the presented model. The elastic response to the uniaxial compression was studied using a texture analyzer. The possibility of nonuniversal effects in the conduction critical exponent, t, was taken into account. It is concluded that the saturation of the response in the G versus plots cannot be assigned to nonuniversal behavior of the exponent t, or to saturation of the elastic response. On the other hand, the presented model accounts for all the main experimental features observed in these systems and for previously reported data of elastomer composites. The simulated behavior of the piezoresistivity coefficient is also in qualitative agreement with previous reports.

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“…The composite materials have better performance than the single component and even show new function due to the effects of nanomaterials and the synergies between polymers and inorganic compounds. These compounds exhibit a number of useful physiochemical properties in addition to chemical stability, opening up possibilities for their use in energy storage devices [5], electron field emitters [6], chemical sensors [7,8], biological sensors [9,10] actuators [11] and gas sensors [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Electrical and thermal studies on poly(3-methyl thiophene) and in situ polymerized poly(3-methyl thiophene)cerium(IV)phosphate cation exchange nanocomposite

Khan¹,

Baig²

2014

Composites Part B: Engineering

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Determination of the electrical behaviour of surfactant treated polymer/carbon black composite gas sensors

Cited by 50 publications

References 10 publications

Effects of Polymer Binder, Surfactant and film Thickness on pH Sensitivity of Polymer Thick Film Sensors

Effects of Polymer Binder, Surfactant and film Thickness on pH Sensitivity of Polymer Thick Film Sensors

A model for the dependence of the electrical conductance with the applied stress in insulating-conducting composites

Electrical and thermal studies on poly(3-methyl thiophene) and in situ polymerized poly(3-methyl thiophene)cerium(IV)phosphate cation exchange nanocomposite

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