Present chapter analyzes polymer-based composites, which give possibility to design high sensitive conductometric gas sensors able to operate at room temperature. Studies showed that various fillers such as metal particles, graphite nanoplatelets (GNP), carbon black, carbon nantotubes, and graphene could be used as a viable and inexpensive filler substitute for preparing polymer-based composites. In this chapter one can also find the description of approaches used for composites preparing, and mechanisms of conductivity change under influence of gas surrounding. Dependence of percolation threshold from the concentration, shape and nature of conducting particles are analyzed as well. Problems related to application of polymer-based composites in gas sensors are analyzed as well. Chapter includes 4 figures, 4 Tables and 68 references.
KeywordsPermeability Surfactant Graphite Manifold Toluene
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