Dresden 2026 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 46: Poster II
CPP 46.33: Poster
Donnerstag, 12. März 2026, 09:30–11:30, P5
Thermoresponsive Microgel Membrane for applications in an Electrochemical Device — •Aditi Gujare1, Stefanie Uredat2, Jonas Runge2, Domenico Truzzolillo1, Julian Oberdisse1, and Thomas Hellweg2 — 1Soft Matter Physics Team, Laboratoire Charles Coulomb, University of Montpellier, Montpellier, France — 2Physical and Biophysical Chemistry, Bielefeld University, Bielefeld, Germany
Microgels based on NIPAM are thermoresponsive with a volume phase transition temperature (VPTT) of 33°C. The VPTT has been observed to shift by copolymerizing these microgels with comonomers such as N-hydroxymethyl acrylamide (HMAM).[1] Different sets of copolymers have been tested, NIPAM-co-HMAM and NIPMAM-co-HMAM. These microgels have been observed to have a VPTT up to 60°C. The copolymer microgels based on the comonomer HMAM has an alcohol group, making it prone to condensation at high temperatures (above 90°C) resulting in formation of a membrane. These thermoresponsive, chemically crosslinked membranes have been prepared by dropcasting and crosslinking at 100°C. Such membranes can be prepared in a range of thickness, of 30-800 μm. The resistance of these membranes of different thickness, comonomer content, and at different temperatures are being tested. Resistance measurements at room temperatures show that thicker membranes are more resistive in a certain concentration of an electrolyte. [1]Gujare,Uredat,Runge,Morgenstern,Truzzolillo,Hellweg,Oberdisse, Langmuir 2025, 41, 45, 30442
Keywords: Microgels; Microgel Membrane; Thermoresponsive; VPTT