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Electrical Conductivity Response of Poly(Phenylene-vinylene)/ Zeolite Composites Exposed to Ammonium Nitrate
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
Department of Materials and Metallurgical Engineering, Faculty of Engineering, Rajamangala University of Technology Thanyaburi, Rangsit-Nakhonnayok Road, Klong 6, Thanyaburi, Phatumthani, 12110, Thailand
Department of Chemistry, Faculty of Science, Kasetsart University, 50 Phahonyothin Road, Ladyao, Chatuchak, Bangkok, 10900, Thailand
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; in revised form: 27 March 2010 / Accepted: 22 April 2010 / Published: 3 June 2010
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
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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.
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(6):5590-5603.
Kamonsawas, Jirarat; Sirivat, Anuvat; Niamlang, Sumonman; Hormnirun, Pimpa; Prissanaroon-Ouajai, Walaiporn. 2010. "Electrical Conductivity Response of Poly(Phenylene-vinylene)/ Zeolite Composites Exposed to Ammonium Nitrate." Sensors 10, no. 6: 5590-5603.