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Materials 2009, 2(4), 2259-2275; doi:10.3390/ma2042259

Interactions between CO and Poly(p-phenylene vinylene) as Induced by Ion-Exchanged Zeolites

1
Conductive and Electroactive Polymers Research Unit, and Center of Petroleum Petrochemicals and Advanced Materials, The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok 10330, Thailand
2
Department of Materials and Production Technology Engineering, King Mongkut’s University of Technology, Bangkok 10800, Thailand
*
Author to whom correspondence should be addressed.
Received: 28 September 2009 / Revised: 29 November 2009 / Accepted: 3 December 2009 / Published: 8 December 2009
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Abstract

The effects of zeolite type, ion-exchanged level, and ion type on the electrical conductivity responses of poly(p-phenylene vinylene) (PPV), doped poly(p-phenylene vinylene) (dPPV) and zeolite composites under CO exposures were investigated. The electrical sensitivity of dPPV/Cu+-ZSM5(Si/Al = 23) system shows a negative sensitivity value of −0.154, while the Na+ system gives a positive sensitivity of 1.48. Based on FTIR and TPD data, the positive response of PPV/Na+-ZSM5 stems from the CO molecules acting as a secondary dopant. On the other hand, the negative response of PPV/Cu+-ZSM5 originates from the fact that CO molecules are selectively adsorbed on Cu+ sites rather than C+ sites of doped PPV.
Keywords: conductive polymer; electrical conductivity; CO; ion-exchanged zeolites conductive polymer; electrical conductivity; CO; ion-exchanged zeolites
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Thongchai, N.; Kunanuruksapong, R.; Niamlang, S.; Wannatong, L.; Sirivat, A.; Wongkasemjit, S. Interactions between CO and Poly(p-phenylene vinylene) as Induced by Ion-Exchanged Zeolites. Materials 2009, 2, 2259-2275.

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