Humidity dependence of the electric characteristics of quaternized 4‐vinylpyridine‐styrene copolymer/perchlorate complexes

Abstract

The dependence of electrical characteristics of copolymer complexes on ambient humidity was studied for complexes of quaternized 4-vinylpyridine-styrene copolymer/perchlorate complexes. When the 4-vinylpyridine content in the copolymer increased, a linear decrease in resistivity was found. From this behaviour, it is concluded that the resistivity can be freely set by variation of the 4-vinylpyridine content in the design of a sensor material. Furthermore, the resistivity was the smallest in the HClO, complex and successively became large in the order of the KClO, complex and the LiClO, complex. From the electrochemical aspect, it was cleared that the degree of dissociation of the counterion exerted influence upon the resistivity of these complexes. ZUSAMMENFASSUNG:Die Abhangigkeit der elektrischen Kennlinie von Copolymerkomplexen von der umgebenden Feuchtigkeit wurde fur quaternisierte 4-Vinylpyridin-Styrol-Copolymer/Perchlorat-Komplexe untersucht. Mit steigendem 4-Vinylpyridingehalt im Copolymeren wurde ein hearer Anstieg des elektrischen Widerstandes beobachtet . Aus