From July 13 to 18, 2025, the 14th International Symposium on Polyelectrolytes (ISP2025) took place in Campinas, Brazil. This year, the conference celebrates its 30th anniversary. Tim Mrohs presented his latest research findings with the lecture “Dynamic Water Vapor Sorption in Crosslinked Polycationic Hydrogels: Thermodynamic and Kinetic Insights.”
In it, he presented that polycationic hydrogels based on diallylammonium derivatives exhibit a specifically adjustable water vapor sorption behavior that is influenced by crosslink density, counterions, and monomer structure. Using a systematic DVS analysis of five formulations, he provided thermodynamic and kinetic insights that underscore the potential of these materials for moisture regulation, barrier coatings, and water harvesting.
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