Sensitive and Selective Responses of Poly(Para-Phenylene Vinylene)/Zeolite Y-Based Sensors Toward Ketone Vapors

Abstract

Poly (p-phenylene vinylene) doped with H₂SO₄ is mixed into zeolite Y matriced to improve the electrical conductivity responses toward ketone vapors. The effect of cation type, cation concentration, and ketone vapor type on the electrical conductivity response toward ketone vapors of dPPV_zeolite Y composites is investigated. The sensitivities of the composites increase linearly with increasing surface area and decreasing cationic radius of the cation in zeolite Y. The highest sensitivity is obtained with the dPPV_[90] Y when exposed to acetone, whereas in MIBK shows the lowest sensitivity The interactions between the ketone molecules and the composites are investigated though the FTIR.

Keywords:

• Conductive polymer
• dimethyl ketone (acetone)
• gas sensor
• MEK
• methyl ethyl ketone
• methyl iso-buthyl ketone
• MIBK
• poly (p-phenylene vinylene)
• zeolite Y

Acknowledgments

The authors would like to acknowledge the financial supports from the Conductive and Electroactive Polymers Research Unit of Chulalongkorn University, the Thailand Research Fund (TRF-BRG, TRF-RTA, PHD/0026/2553), and the Royal Thai Government Budget.