In this particular context, stimuli-responsive hydrogels have been examined as promising candidates in detail during the past decades concerning their uptake and release ability of different kinds of molecules. Besides ibuprofen and other drugs, also many surfactants were investigated due to their tunable interactions with microgel particles. Investigated the uptake and release of nonionic PEO-based surfactants inside poly- N-isopropylacrylamide (PNIPAM) microgels.
