Articles | Volume 11, issue 1
https://doi.org/10.5194/jsss-11-51-2022
https://doi.org/10.5194/jsss-11-51-2022
Regular research article
 | 
23 Feb 2022
Regular research article |  | 23 Feb 2022

In situ analysis of hydration and ionic conductivity of sulfonated poly(ether ether ketone) thin films using an interdigitated electrode array and a nanobalance

Hendrik Wulfmeier, Niklas Warnecke, Luca Pasquini, Holger Fritze, and Philippe Knauth

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Latest update: 28 Mar 2024
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Short summary
A newly developed experimental setup to characterize thin polymeric films during dehydration and hydration is presented. The great advantage of this measurement device and technique is that it monitors the mass change and conductivity of the films in situ and simultaneously at virtually identical conditions. The feasibility of the technique is demonstrated by characterizing ionomer thin films. A mass resolution of ±7.9 ng is achieved. The precision of relative humidity (RH) control is ±0.15 %.