Polyaniline/zeolite LTA composites and electrical conductivity response towards CO

Chuapradit, C.; Wannatong, Ladawan; Chotpattananont, Datchanee; Hiamtup, Piyanoot; Sirivat, Anuvat; Schwank, Johannes W.

doi:10.1016/j.polymer.2004.11.101

Cited by 50 publications

(43 citation statements)

References 24 publications

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“…The specific electrical conductivity values of the composites are lower than the pure PEDOT-PSS_1:1, but are higher than those of the pure zeolites. The electrical conductivity measurement of PEDOT-PSS_1:1 under air exposure is greater than the electrical conductivity value under N 2 exposure; this can be related to the interaction of oxygen and moisture in the air with the active sites [20]. is identified as the difference in the steady state electrical conductivity value when exposed to the target gas (CO) and the steady state electrical conductivity value when exposed to N 2 at the same pressure and temperature, namely 1 atm at 27 ± 1 °C.…”

Section: Electrical Conductivity Under Air and Nitrogen Exposurementioning

confidence: 84%

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Interaction of carbon monoxide with PEDOT-PSS/zeolite composite: effect of Si/Al ratio of ZSM-5 zeolite

Chanthaanont¹,

Sirivat²

2012

E-Polymers

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Abstract:Composites with poly(3,4-ethylenedioxythiophene) doped with poly(styrene sulfonic acid), PEDOT-PSS, as the matrix containing ZSM-5 zeolites of various Si/Al ratios in the range of 23-280 at 20% (v/v) were fabricated to investigate the effect of Si/Al ratios on electrical conductivity sensitivity responses towards carbon monoxide (CO). The electrical conductivity responses of PEDOT-PSS/ZSM-5 composites were altered due to the available adsorption sites for CO molecules. The electrical conductivity sensitivity to CO increases with decreasing Si/Al ratios. The composites produce irreversible responses when replacing CO with nitrogen. The addition of ZSM-5 zeolites to the pristine PEDOT-PSS improves the electrical conductivity sensitivity of the composites by enhancing the interaction between PEDOT-PSS and CO gas. The composite of ZSM-5 zeolites with a Si/Al ratio equal to 23 gives the highest electrical conductivity sensitivity toward CO.

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Section: Electrical Conductivity Under Air and Nitrogen Exposurementioning

confidence: 84%

“…Recently, zeolites have been used in gas sensor applications in combination with conductive polymers [8,[20][21][22]. Because of the well-defined structure of a zeolite, it can separate the desired gas molecule from others and the presence of a cation in the cavity also facilitates gas interactions.…”

Section: Introductionmentioning

confidence: 99%

Interaction of carbon monoxide with PEDOT-PSS/zeolite composite: effect of Si/Al ratio of ZSM-5 zeolite

Chanthaanont¹,

Sirivat²

2012

E-Polymers

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“…The composites of both zeolites have greater sensitivity values compared to that of the pure polyaniline in the 16 ~ 1000 ppm CO concentration range. CaA (5Å) zeolite is the most effective porous material in promoting the interaction among CO and polyaniline because that zeolite possesses the leading pore size in LTA type zeolite compared with KA and NaA [15].…”

Section: Sensors I) Co and Co 2 Sensorsmentioning

confidence: 99%

A novel approach for Zeolite-based Materials for Gas Sensors

Mohan¹

2013

IOSR-JESTFT

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This paper deals with the uses of zeolites and zeolite-based materials for developing gas sensors. The purpose of using zeolites in sensors is usually to improve sensitivity and selectivity by preferential adsorption, in addition, thin films assure a fast response time of the sensor. The compound or cluster sensing towards a gas assembled into the cages or channels of zeolites property of the materials were disussed in this paper. The possibility of these materials is tinted and avenues for further research are suggested.

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“…• C for 24 h. 9 The mole of HCl (N acid ) varied against the mole of monomer (N monomer ). The N acid :N monomer was 150:1, 100:1, 80:1, 50:1, and 20:1.…”

Section: Synthesis Of Pani Nano and Large Particlesmentioning

confidence: 99%

Highly Electroresponsive Polymer Blends of Polyaniline Nanoparticles and Chloroprene Rubbers

Kunanuruksapong

Sirivat

2012

Adv Polym Technol

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ABSTRACT:Polymer blends between polyaniline (PANI) nano/large particles and chloroprene rubbers were fabricated and investigated as the electroresponsive materials. The effects of the chloroprene type, particle size, particle concentration, and electric field strength on the electrical properties, the storage modulus sensitivity, and the dielectrophoresis force were studied. Chloroprene W provides the highest storage modulus sensitivity at 55% and is chosen as the matrix. The electrical conductivity and the dielectric constant of the blends increase with an increasing concentration of PANI nano/large particles. The storage modulus of the blends (with and without the electric field) increases linearly with the PANI content. The maximum storage modulus sensitivities of the blends with PANI nano and large particles at E = 2 kV/mm are 73% at 0.01 vol% and 63% at 0.1 vol%, respectively. The dielectrophoresis force of all specimens increases monotonically with increasing electric field strength. The blends with PANI-nano and large particles at 0.01 vol% generate higher dielectrophoresis forces than those of the pure chloroprene W. For the 0.1 vol% of PANI nano and large particles, the resultant deflection angle and dielectrophoresis forces are lower than those of the 0.01 vol% systems and the pure chloroprene W, presumably due to the diminishing resultant dipole moments generated with increasing PANI concentration. C 2012 Wiley

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Polyaniline/zeolite LTA composites and electrical conductivity response towards CO

Cited by 50 publications

References 24 publications

Interaction of carbon monoxide with PEDOT-PSS/zeolite composite: effect of Si/Al ratio of ZSM-5 zeolite

Interaction of carbon monoxide with PEDOT-PSS/zeolite composite: effect of Si/Al ratio of ZSM-5 zeolite

A novel approach for Zeolite-based Materials for Gas Sensors

Highly Electroresponsive Polymer Blends of Polyaniline Nanoparticles and Chloroprene Rubbers

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