A POLYMER HUMIDITY SENSOR

Authors
HWANG LS KO JM RHEE HW KIM CY
Citation
Ls. Hwang et al., A POLYMER HUMIDITY SENSOR, Synthetic metals, 57(1), 1993, pp. 3671-3676
Citations number
12
Categorie Soggetti
Physics, Condensed Matter","Metallurgy & Mining
Journal title
Synthetic metals → ACNP
ISSN journal
03796779
Volume
57
Issue
1
Year of publication
1993
Pages
3671 - 3676
Database
ISI
SICI code
0379-6779(1993)57:1<3671:APHS>2.0.ZU;2-8
Abstract
Polypyrrole doped with dodecylsulfate ion on electrochemical polymeriz ation of pyrrole keeps the anion in it on reduction of the polymer in an aqueous solution. The free anion on reduction of the polymer attrac ts a cation to form a salt in the polymer. An attempt was made to use polypyrrole as a sensing material in measurement of humidity. The gold covered electrode was constructed by employing a photo-resist method and the ionic conductivity of the reduced polypyrrole changes from 2 x 10 kOMEGA.cm to 3 x 10(3) kOMEGA.cm depending on humidity.