Study of nafion membrane hydration using photoacoustic spectroscopy and TGA and DSC
What is it about?
In this work, the thermal-optical characterization of Nafion in acid form was performed by Photoacoustic Spectroscopy, Thermogrametry and Differential Scanning Calorimetry. In the experimental procedure were considered three distinct hydration levels: (1) pristine membrane; (2) swelling process; (3) and drying at controlled room temperature after swelling process.
Why is it important?
The Nafion membranes are widely used in electrochemical applications such as fuel cells, chlor-alkali cells, and actuators/sensors. The found behaviors showed significant irreversible structural changes induced by water retention in the membrane. These structural changes depend on the water population present in the clusters and affect as well the directional thermal diffusivity of the membrane irreversibly.
The following have contributed to this page: Professor Daniele T Dias