Adrian, MuhammadMuhammadAdrianEckert, KathrinKathrinEckertSerial, Maria RaquelMaria RaquelSerialTsanda, ArtyomArtyomTsandaBenders, StefanStefanBendersKnopp, TobiasTobiasKnoppSmirnova, IrinaIrinaSmirnovaPenn, AlexanderAlexanderPenn2024-09-162024-09-16202416th International Bologna Conference Magnetic Resonance in Porous Media (MRPM 2024)https://hdl.handle.net/11420/49069Stimuli-responsive lyogels are known for their capability to undergo substantial macroscopic changes upon exposure to external stimuli such as temperature, pH variations, or changes in solvent composition. These smart materials offer unique properties, showing potential applications in various fields, including actuation processes and flow control in the form of valves or catalyst carriers. This versatility makes them well-suited for integration into the design of advanced SMART reactors. However, achieving an effective integration requires a detailed understanding of lyogels' pore structure and diffusion behavior under various stimuli, as these factors fundamentally influence their functional properties. While several techniques can provide information about the macroscopic effects of lyogels during swelling/shrinking in response to different stimuli, only a few techniques can provide microstructural information about the swelling state. Nuclear Magnetic Resonance (NMR) is a suitable tool for the study of solvent dynamics inside macro, meso, and nanopores, through changes in their relaxation times and self-diffusion coefficient. Although 1H NMR relaxometry has been widely used to investigate the insitu swelling behavior of hydrogels, microgels, and different polymer matrices, there is still limited research on the dynamic swelling/shrinking behavior of lyogels in pure and/or mixtures of solvents of varying polarity. In our study, we use 1H NMR relaxometry and diffusion measurement to investigate the microstructural changes of lyogels in different solvent polarity at equilibrium state and during the solvent exchange process.enhttps://creativecommons.org/licenses/by/4.0/Technology::620: EngineeringConference Poster10.15480/882.1330110.15480/882.13301Conference Poster