Development of an optical ammonia sensor based on polyaniline/epoxy resin (SU-8) composite.
Polyaniline (PANI)/glycidyl ether of bisphenol A (SU-8) composite film is elaborated in order to detect ammonia gas. These composite films are characterized by ultraviolet-visible (UV-vis) spectroscopy, Fourier transformed infrared (FTIR) spectroscopy and scanning electron microscopy (SEM). The sensitivity to ammonia is measured by optical absorption changes. The ammonia sensing properties of PANI/SU-8 composite films are studied, and then are compared to pure PANI films elaborated by chemical way. Experimental results show that the PANI/SU-8 optical sensor has simultaneously a rapid response to ammonia gas and regenerates easily, that is advantageous compared to pure PANI films.
Airoudj
A
A
Laboratoire Polymères, Colloïdes, Interfaces, UMR 6120, Université du Maine, Avenue Olivier Messiaen, 72085 Le Mans, France.
Debarnot
D
D
Bêche
B
B
Poncin-Epaillard
F
F