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Use of the polysulfone polymer in NOx detection

G. TELIPAN1,* , M. IGNAT1, V. COZAN2

Affiliation

  1. National Institute for Electrical Engineering ICPE-Advanced Research, Bucharest, Romania
  2. ”Petru Poni” Institute of Macromolecular Chemistry of the Romanian Academy, Iasi, Romania

Abstract

The sensor with polysulfone sensitive layer was made by thick film technology. An alumina substrate 6 x 6 x 0.5 mm was used. On substrate was screen-printed an interdigitated electrode array, using Au ink and heat treated at 950 °C for 1 h. The sensor contains the pads of Pd-Ag conductive ink and the conductive layer of Ag ink. The sensitive polysulfone layer dissolved in chloroform was deposed by spin coating on the substrate over electrode. The structure of polysulfone was characterized by IR, H-NMR, viscometry, elemental analysis, X-ray and thermogravimetric measurements. The device was tested in NOx atmospheres in the concentration range of 0-1000 ppm. The obtained results were situated in the range of voltage values exceeding 300 mV. The characteristic voltage-concentration and voltage-time were presented..

Keywords

Polysulfone, Sensor, Thick technology, NOx, H-NMR, Thermal analysis.

Submitted at: Jan. 18, 2006
Accepted at: March 23, 2006

Citation

G. TELIPAN, M. IGNAT, V. COZAN, Use of the polysulfone polymer in NOx detection, Journal of Optoelectronics and Advanced Materials Vol. 8, Iss. 2, pp. 582-584 (2006)