SO2 gas sensors using polymers with different amino groups

Citation
M. Matsuguchi et al., SO2 gas sensors using polymers with different amino groups, SENS ACTU-B, 77(1-2), 2001, pp. 363-367
Citations number
15
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
SENSORS AND ACTUATORS B-CHEMICAL
ISSN journal
0925-4005 → ACNP
Volume
77
Issue
1-2
Year of publication
2001
Pages
363 - 367
Database
ISI
SICI code
0925-4005(20010615)77:1-2<363:SGSUPW>2.0.ZU;2-5
Abstract
The QCM-type SO2 gas sensors were fabricated using amino-functional poly(st yrene-co-chloromethyl styrene) derivatives. Three kinds of diamine compound s, DMEDA, DMPDA and DPEDA, were comparatively used to introduce amino group s into the copolymer. The response time was the shortest for the sensor usi ng the DPEDA functional copolymer, though the sensitivity was the smallest at the same measuring temperature. Sensing characteristics were affected by the measuring temperature and by the mole fraction of chloromethylstyrene in the copolymers. Further, a small addition of organically modified siloxa ne oligomer was effective for further reduction of the response time. The s ensor using the DPEDA functional copolymer containing 5 wt.% of siloxane ol igomer had the fastest response time (t(100) = 11 min) and complete reversi bility even at 50 degreesC. (C) 2001 Elsevier Science B.V. All rights reser ved.