By heating above 120°C, the Nafion-polymer-rods contract and ionic crosslinks are switched. After further heating >140 °C the rods become a sort of messy coils. This is reversible. Publication: nature scientific reports (2018)
https://www.nature.com/articles/s41598-018-31368-8

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By heating above 120°C, the Nafion-polymer-rods contract and ionic crosslinks are switched. After further heating >140 °C the rods become a sort of messy coils. This is reversible. Publication: nature scientific reports (2018)
https://www.nature.com/articles/s41598-018-31368-8