Application of ink-jet printing and spray coating for the fabrication of polyaniline/poly(N-vinylpyrrolidone)-based ammonia gas sensor

0443939 - ÚMCH 2016 RIV CH eng C - Conference Paper (international conference)
Peřinka, N. - Držková, M. - Randjelović, D. V. - Bondavalli, P. - Hajná, Milena - Bober, Patrycja - Syrový, T. - Bonnassieaux, Y. - Stejskal, Jaroslav
Application of ink-jet printing and spray coating for the fabrication of polyaniline/poly(N-vinylpyrrolidone)-based ammonia gas sensor.
Key Engineering Materials. Vol. 644. Pfaffikon: Trans Tech Publications Inc, 2015 - (Gutierez, J.; Barandiaran, J.; Hristoforou Vlachos, E.; Vlachos, D.), s. 61-64. ISSN 1013-9826. E-ISSN 1662-9795.
[International Conference on Materials and Applications for Sensors and Transducers /4./. Bilbao (ES), 08.06.2014-11.06.2014]
R&D Projects: GA TA ČR(CZ) TE01020022; GA ČR(CZ) GP14-05568P
Institutional support: RVO:61389013
Keywords : polyaniline * poly(N-vinylpyrrolidone) * ink-jet printing
Subject RIV: JI - Composite Materials

We report on the preparation of thin conducting films from the poly (N-vinylpyrrolidone) stabilized polyaniline dispersions for the ammonia gas sensor applications. The dispersion is water-based and prepared by means of relatively simple chemical oxidation polymerization of aniline. Two processes were used for the ink deposition, the ink-jet printing and the spray-coating technique. With the former one, the ink was at first tested on the poly (ethylene terephthalate) foil to find a suitable combination of ink formulation and print parameters. After that, the final ammonia gas sensors were fabricated by both deposition techniques and compared. The aspects of the ink preparation and alteration, as well as the active layer properties, are analyzed by means of UV-vis spectroscopy, optical microscopy, atomic force microscopy, profilometry and electrical measurements. The results obtained from each deposition technique are discussed. In both cases, the sensitivity to the ammonia gas has been demonstrated, making the proposed ink in combination with the two named deposition processes feasible for the potential large-area sensor production.
Permanent Link: http://hdl.handle.net/11104/0250812