LiClO_4-doped poly(ethylene oxide) electrospun nanofiber humidity sensors

摘要

The need for cheaper, faster, and more accurate measurements has been a driving force for the development of new sensing systems and materials. The report of electrical conductivity from ionic polymers in 1975 attracted considerable interest. Since then, various ionically conducting polymers have been prepared for a wide range of applications. Ionically conducting polymers are normally prepared by dissolving salt species in a solid polymer host and their conductivity results from the ion migration between coordination sites repeatedly generated by the local motion of polymer chain segments. Therefore, the conductivity, and some other electrical properties, of ionically conducting polymers may change with any phenomenon that changes the mobility of the polymer chain segments or the solvation state of the ionic charge carriers. Consequently, most ironically conducting polymers show a low conductivity and high sensitivity to humidity.