NOVEL PH-SENSITIVE FILMS CONSTRUCTED FROM POLYPYRROLE COMPOSITES

Authors
TSAMOURAS D DALAS E SAKKOPOULOS S VITORATOS E
Citation
D. Tsamouras et al., NOVEL PH-SENSITIVE FILMS CONSTRUCTED FROM POLYPYRROLE COMPOSITES, Physica scripta. T, 48(5), 1993, pp. 521-524
Citations number
19
Categorie Soggetti
Physics
Journal title
Physica scripta. T → ACNP
ISSN journal
02811847
Volume
48
Issue
5
Year of publication
1993
Pages
521 - 524
Database
ISI
SICI code
0281-1847(1993)48:5<521:NPFCFP>2.0.ZU;2-T
Abstract
A new type of solid state chemiresistors sensitive to pH-changes is de scribed. The chemical-sensitive layer consists of polypyrrole incorpor ated into a polyvinyl alcohol polymer matrix by polymerization under v acuum. Preliminary testing has shown these sensors to be stable in aqu eous solutions at temperatures up to 50-degrees-C with response times in seconds. At 25-degrees-C the sensor sensitivity was 47OMEGA/pH. Int erferences appear to be acceptably small.