Enhanced thermal properties and morphology of ion-exchanged polypyrrole films Truong, V. -T., Ennis, B. C. and Forsyth, M. 1995, Enhanced thermal properties and morphology of ion-exchanged polypyrrole films, Polymer, vol. 36, no. 10, pp. 1933-1940, doi: 10.1016/0032-3861(95)91435-A. Attached Files Name Description MIMEType Size Downloads Title Enhanced thermal properties and morphology of ion-exchanged polypyrrole films Author(s) Truong, V. -T. Ennis, B. C. Forsyth, M. Journal name Polymer Volume number 36 Issue number 10 Start page 1933 End page 1940 Publisher Elsevier Ltd. Place of publication Oxford, England Publication date 1995-05 ISSN 0032-3861 1873-2291 Keyword(s) polypyrrole films ion exchange thermal properties Summary The thermal stability of electrochemically prepared polypyrrole (PPy) films with p-toluenesulfonate (pTS) or perchlorate (ClO4−) counterion (PPy/pTS and PPy/ClO4−) is improved by simple treatment with aqueous sulfuric acid, sodium sulfate or sodium bisulfate. The degree of stabilization achieved depends on the solution, temperature and duration of treatment. Although the mechanism for improved stability is not yet clear, it is apparent that the level of ion exchange and the original polymer microstructure are important. A model for the conductivity decay as a function of thickness has been proposed. The early stages of ion exchange are not symmetrical, and diffusion is facilitated at the electrode side of the film. Furthermore, X-ray diffraction shows no evidence of morphological change after treatment of PPy/pTS (43 μm), but in PPy/pTS (12 μm) and PPy/ClO4− (41 μm) films an additional peak is indicative of more ordered structure following treatment. The glass transition temperature, Tg, of PPy/pTS and PPy/ClO4− films obtained by modulated differential scanning calorimetry is approximately 155°C. Language eng DOI 10.1016/0032-3861(95)91435-A Field of Research 039999 Chemical Sciences not elsewhere classified Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences HERDC Research category C1.1 Refereed article in a scholarly journal Copyright notice ©1995, Elsevier Science Ltd. Persistent URL http://hdl.handle.net/10536/DRO/DU:30030282 Document type: Journal Article Collection: Institute for Technology Research and Innovation Related Links Link Description Connect to published version (restricted access) Go to link with your DU access privileges     Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved. Versions Version Filter Type Fri, 10 Sep 2010, 15:11:37 EST Fri, 24 Sep 2010, 10:37:27 EST Fri, 24 Sep 2010, 14:27:10 EST Fri, 24 Sep 2010, 14:28:29 EST Fri, 24 Sep 2010, 14:30:48 EST Mon, 16 Jun 2014, 16:29:29 EST Filtered Full Citation counts:   Cited 32 times in TR Web of Science Cited 34 times in Scopus Search Google Scholar Access Statistics: 399 Abstract Views, 0 File Downloads  -  Detailed Statistics Created: Fri, 10 Sep 2010, 15:11:37 EST

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