Water-instigated changes in elastic modulus of polypyrrole studied by thin rod acoustic wave sensor

Paul C.H. Li; Michael Thompson

doi:10.1016/S0003-2670(97)87784-7

Author(s)

Paul C.H. Li
Michael Thompson

Detail(s)

Original language	English
Pages (from-to)	255-262
Journal / Publication	Analytica Chimica Acta
Volume	353
Issue number	2-3
Publication status	Published - 30 Oct 1997

Link(s)

DOI	DOI https://doi.org/10.1016/S0003-2670(97)87784-7 Final Published version
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Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-0030729443&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(526b9eca-55ac-472d-93b5-e6c44f5001e4).html

Abstract

A thin metal fiber (the thin rod) has been configured as an acoustical delay line in either flexural or extensional mode for operation as a chemical sensor. Polypyrrole was deposited by an electrochemical procedure on the fiber and subject to cycles of water sorption and desorption. The responses of the device in terms of changes in phase angle was measured for experiments involving fibers with two radii, and for different thicknesses of polymer film. The highest sensitivity was found when the device was operated in the flexural mode for the fiber of smallest radius. Comparison of experimental and theoretical phase changes indicates that the major effect contributing to sensor response is the change of elastic modulus of the polymer film.

Research Area(s)

Elastic modulus, Polypyrrole, Thin rod acoustic wave sensor, Water sorption

Bibliographic Note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Citation Format(s)

[ RIS ] [ BibTeX ]

Water-instigated changes in elastic modulus of polypyrrole studied by thin rod acoustic wave sensor. / Li, Paul C.H.; Thompson, Michael.
In: Analytica Chimica Acta, Vol. 353, No. 2-3, 30.10.1997, p. 255-262.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Li, PCH & Thompson, M 1997, 'Water-instigated changes in elastic modulus of polypyrrole studied by thin rod acoustic wave sensor', Analytica Chimica Acta, vol. 353, no. 2-3, pp. 255-262. https://doi.org/10.1016/S0003-2670(97)87784-7

Li, P. C. H., & Thompson, M. (1997). Water-instigated changes in elastic modulus of polypyrrole studied by thin rod acoustic wave sensor. Analytica Chimica Acta, 353(2-3), 255-262. https://doi.org/10.1016/S0003-2670(97)87784-7

Li PCH, Thompson M. Water-instigated changes in elastic modulus of polypyrrole studied by thin rod acoustic wave sensor. Analytica Chimica Acta. 1997 Oct 30;353(2-3):255-262. doi: 10.1016/S0003-2670(97)87784-7

Li, Paul C.H. ; Thompson, Michael. / Water-instigated changes in elastic modulus of polypyrrole studied by thin rod acoustic wave sensor. In: Analytica Chimica Acta. 1997 ; Vol. 353, No. 2-3. pp. 255-262.