SENSORY PROPERTIES OF POLYANILINE FILMS, OBTAINED ON THE OPTICALLY TRANSPARENT CARRIERS


  • B.R. Tsyzh Kazimierz Wielki University in Bydgoszcz, Bydgoszcz
  • O.I. Aksimentyeva Ivan Franko National University of Lviv
  • M.R. Olhova Lviv national university of veterinary medicine and biotechnologies
  • Yu.Yu. Horbenko Ivan Franko National University of Lviv
Keywords: polyaniline, thin films, morphology, transparent substrates, chemical deposition, ammonium, sensitivity, sensor element, transmission spectra, optical response, rate action

Abstract

Detection and monitoring of gaseous ammonia in the atmosphere and industrial environments is essential in various fields of application, including monitoring of the food freshness. The sensing element of devices are made largely from inorganic substances, including films of toxic and deficient semiconductors. Currently a large variety of devices are available to detect ammonia, but most of them are expensive and complex to manufacture and use, which causes the search of simpler and cheaper method of manufacturing such sensors.

The article is devoted to developing of the sensitive elements of devices based on thin films of conducting polymer – polyaniline (PAN), which attracted considerable attention due to the simple synthesis, low cost, sensitivity to various gases at room temperature. The changes in optical properties of PAN films, caused by interaction with molecules of gaseous ammonia, were studied to identify and establish the gas content in the environment. It is shown that the proposed method of forming the gas sensitive films by chemical deposition of PAN on the surface of optically transparent materials (glass, tin oxide, polymethylmethacrylate) provides high sensitivity to ammonia, which is manifested in the shift of the transmittance band and reducing its intensity. Time of adsorption–desorption equilibrium is 30–60 s, confirming the performance of the optical response of obtained films.

 

References

Wilson, S.A., Jourdain, R.P., Zhang, Q., Dorey, R.A. (2007). New materials for micro–scale sensors and actuators. An engineering review. Materials Science and Engineering R: Reports. 56, 1–129.

Dorozhkin, L.M., Rozanov, I.A. (2001). Himicheskie gazovye sensory v diagnostike okruzhajushhej sredy. Sensor. 2, 2–9 (in Russian).

Tsizh, B.R., Aksimentyeva, O.I., Chokhan, M.I., Lazorenko, V.Y. (2013). Structure and gas sensitivity of the ZnO sensor of ethanol. Solid State Phenomena. 200, 305–310.

Olenych, I.B., Monastyrs'kyj, L.S., Aksiment'jeva, O.I., Sokolovs'kyj, B.S. (2011). Vologochutlyvi struktury na osnovi poruvatogo kremniju. UFZh. 56(11), 1199–1203 (in Ukrainian).

Timmer, B., Olthuis, W., Berg, A. (2005). Ammonia sensors and their applications. Sens. Actuators, 107, 666–677.

Tsizh, B.R., Chokhan, M.I., Aksimentyeva, O.I., Konopelnyk, O.I., Poliovyi, D.O. (2008). Sensors based on conducting polyaminoarenes to control the animal food freshness. Mol. Cryst. Liq. Cryst. 497, 586–592.

Paulraj, R.A., Mani, G.K., Nallathambi, L., Rayappan J.B. (2016). Room Temperature Methanol Vapour Sensor Based on Polyaniline Nanoparticles. Journal of Nanoscience and Nanotechnology. 16, 8315–8321.

Vaghela, C., Kulkarni, M., Haram, S., Karve, M., Aiyer, R. (2016). Biopolymer–polyaniline composite for a wide range ammonia gas sensor. IEEE Sensors Journal. DOI 10.1109/JSEN.2016.2541178.

Tsizh, B.R., Aksimentyeva, O.I., Vertsimakha, Ya.I., Lutsyk, P., Chokhan, M.I. (2014). Effect of Ammonia on Optical Absorption of Polyaniline Films. Mol. Cryst. Liq. Cryst. 589, 116–123.

Jin, Z., Su, Y., Duan, Y. (2000). An improved optical pH sensor based on polyaniline. Sensors and Actuators. –71, 118–122.

Lur'е, Ju.Ju. (1962). Spravochnik po analiticheskoj himii. – Goshimizdat (in Russian).

Abstract views: 45
PDF Downloads: 30
Published
2016-08-12
How to Cite
Tsyzh, B., Aksimentyeva, O., Olhova, M., & Horbenko, Y. (2016). SENSORY PROPERTIES OF POLYANILINE FILMS, OBTAINED ON THE OPTICALLY TRANSPARENT CARRIERS. Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies. Series: Food Technologies, 18(2), 121-125. https://doi.org/10.15421/nvlvet6824