Gas sensing conductive polymer nanocomposites filled with carbon black nanoparticles

Abstract: Taking advantage of vapor-induced variation in electrical resistivity, polymer-based conducting composite materials can serve as gas sensors with broad application prospects. Waterborne polyurethane (WPU) filled with carbon black nanoparticles has shown attractive sensitivity to both non-polar and polar organic vapors. It is able to sense, quantify and discriminate low concentration gaseous molecules. In this chapter, structure and properties relationship, influential factors and modeling of sensing behaviors of the WPU nanocomposites are thoroughly discussed, demonstrating one of the interesting development trends of functional polymer nanocomposites.