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pH Sensitivity of novel PANI/PVB/PS3 composite films

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Show simple item record Gill, Edric I. Arshak, Arousian Arshak, Khalil Korostynska, Olga 2014-12-19T17:33:48Z 2014-12-19T17:33:48Z 2007
dc.description peer-reviewed en_US
dc.description.abstract This paper reports on the results from the investigation into the pH sensitivity of novel PANI/PVB/PS3 composite films. The conductimetric sensing mode was chosen as it is one of the most promising alternatives to the mainstream pH-sensing methods and it is the least investigated due to the popularity of other approaches. The films were deposited using both screen-printing and a drop-coating method. It was found that the best response to pH was obtained from the screen-printed thick films, which demonstrated a change in conductance by as much as three orders of magnitude over the pH range pH2-pH11. The devices exhibited a stable response over 96 hours of operation. Several films were immersed in buffer solutions of different pH values for 96 hours and these were then investigated using XPS. The resulting N 1s spectra for the various films confirmed that the change in conductance was due to deprotonation of the PANI polymer backbone. SEM and Profilometry were also undertaken and showed that no considerable changes in the morphology of the films took place and that the films did not swell or contract due to exposure to test solutions. en_US
dc.language.iso eng en_US
dc.publisher MDPI en_US
dc.relation.ispartofseries Sensors;7, pp. 3329-3346
dc.subject PANI composite film en_US
dc.subject XPS en_US
dc.subject thick films en_US
dc.subject conductance en_US
dc.subject interdigitated electrodes en_US
dc.title pH Sensitivity of novel PANI/PVB/PS3 composite films en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.contributor.sponsor IRC en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US

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