Abstract
Among high-speed gas sensors, chemoresistive type is very common. Polymers, such as polypyrrole (PP) and polyaniline (PANI), in combination with various inorganic materials, including metal nanoparticles (Ag, Au, Cu and Pd), due to their developed surface form nanocomposites with high conductivity, catalytic activity, thermoelectric properties, which dictates their application in electrocatalysis, for the development of protective coatings, in the production of sensors. Markers have been developed to indicate the quality of food products (meat, poultry, fish, sausages) on the basis of a nanostructured polyaniline/copper composite in a polyvinyl alcohol matrix. The marker is a film with a thickness of 15–20 μm. Upon contact with ammonia vapors, they significantly change their optical and electrical characteristics, which are confirmed by UV-, FTIR-ATR spectra and current-voltage characteristics. The proposed composite material, as well as PVA films based on it, can be used as an indicator of ammonia presence.
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Shumskaya, A.E. et al. (2022). Polyaniline-Based Food Quality Markers. In: Khakhomov, S., Semchenko, I., Demidenko, O., Kovalenko, D. (eds) Research and Education: Traditions and Innovations. INTER-ACADEMIA 2021. Lecture Notes in Networks and Systems, vol 422. Springer, Singapore. https://doi.org/10.1007/978-981-19-0379-3_17
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