B. Șerban, A. K. Sarin Kumar, S. Costea, M. Mihaila, O. Buiu, M. Brezeanu, N. Varachiu, C. Cobianu
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Surface acoustic wave CO2 sensing with polymer-amino carbon nanotube composites
The synthesis of two new types of nanocomposite matrices, the first based on polyallylamine (PAA) and aminocarbon nanotubes, the second on polyethyleneimine (PEI) and aminocarbon nanotubes, are reported. The surface acoustic wave (SAW) sensors, coated with the two selected nanocomposites, showed good sensitivities when varying the CO2 concentrations in the range (500-5000) ppm. The sensor sensitivity is larger when using polyethyleneimine aminocarbon nanotubes than in the case when only a pure polyethyleneimine layer is considered for coating.
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