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Sensors 2010, 10(6), 5590-5603; doi:10.3390/s100605590
Article

Electrical Conductivity Response of Poly(Phenylene-vinylene)/ Zeolite Composites Exposed to Ammonium Nitrate

1
, 1,* , 2
, 3
 and 4
1 Center of Excellence in Petroleum Petrochemicals and Advanced Materials, The Petroleum and Petrochemical College, Chulalongkorn University, Soi Chula 12, Phayathai Road, Phatumwan, Bangkok, 10330, Thailand 2 Department of Materials and Metallurgical Engineering, Faculty of Engineering, Rajamangala University of Technology Thanyaburi, Rangsit-Nakhonnayok Road, Klong 6, Thanyaburi, Phatumthani, 12110, Thailand 3 Department of Chemistry, Faculty of Science, Kasetsart University, 50 Phahonyothin Road, Ladyao, Chatuchak, Bangkok, 10900, Thailand 4 Department of Industrial Chemistry, Faculty of Applied Science, KMIT-NB, 1518 Pibulsongkram Road, Bangsue, Bangkok, 10800, Thailand
* Author to whom correspondence should be addressed.
Received: 30 January 2010 / Revised: 27 March 2010 / Accepted: 22 April 2010 / Published: 3 June 2010
(This article belongs to the Section Physical Sensors)
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Abstract

Poly(p-phenylenevinylene) (PPV) was chemically synthesized via the polymerization of p-xylene-bis(tetrahydrothiophenium chloride) monomer and doped with H2SO4. To improve the electrical conductivity sensitivity of the conductive polymer, Zeolites Y (Si/Al = 5.1, 30, 60, 80) were added into the conductive polymer matrix. All composite samples show definite positive responses towards NH4NO3.The electrical conductivity sensitivities of the composite sensors increase linearly with increasing Si/Al ratio: with values of 0.201, 1.37, 2.80 and 3.18, respectively. The interactions between NH4NO3 molecules and the PPV/zeolite composites with respect to the electrical conductivity sensitivity were investigated through the infrared spectroscopy.
Keywords: conductive polymer; gas sensor; poly(p-phenylenevinylene); ammonium nitrate; zeolite Y conductive polymer; gas sensor; poly(p-phenylenevinylene); ammonium nitrate; zeolite Y
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Kamonsawas, J.; Sirivat, A.; Niamlang, S.; Hormnirun, P.; Prissanaroon-Ouajai, W. Electrical Conductivity Response of Poly(Phenylene-vinylene)/ Zeolite Composites Exposed to Ammonium Nitrate. Sensors 2010, 10, 5590-5603.

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