Choosing a Polymer for Gas Sensor Applications

Beeswax is a mixture of organic compounds such as unsaturated and saturated fatty acids, alcohols, and esters, and polybutadiene contains unsaturated alkenes Lifetime calculated for coating prepared by cast solution Lifetime for dip coated Lifetime for spin coated Source Data from Muller et al. (2011) 

One can consider as a disadvantage the low selectivity of polymer-based gas sensors. However, not only the sensors based on conducting polymers but also the other sensors, including sensors designed on the base of metal oxides and many other sensing materials, face this problem. 

and cantilever-based gas sensors are adsorption-type sensors in which the change in weight of the sensing element is the determining factor (Houser et al. 2001). Therefore, polymers applied in such devices should have the ability to sorb selectively and reversibly an analyte of interest from sampled air and to concentrate it so that lower concentrations can be detected. How specific adsorption properties of polymers can be, one can estimate on the base of results presented in Table 3.9. We need to note that for other analytes, polymers optimal for application will be different. 

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The features of analyte interaction with polymers also influence sensor parameters. We have to take into account that weak interactions between the analyte and the polymer produce sensors with good 

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