@misc{luetzow_solventbased_fabrication_2020, author={Luetzow, K., Weigel, T., Lendlein, A.}, title={Solvent-based Fabrication Method for Magnetic, Shape-Memory Nanocomposite Foams}, year={2020}, howpublished = {journal article}, doi = {https://doi.org/10.1557/adv.2019.422}, abstract = {This paper presents shape-memory foams that can be temporarily fixed in their compressed state and be expanded on demand. Highly porous, nanocomposite foams were prepared from a solution of polyeiherureihane with suspended nanoparticles (mean aggregate size 90 nm) which have an iron(III) oxide core with a silica shell. The polymer solution with suspended nanoparticles was cooled down to -20 °C in a two-stage process, which was followed by freeze-diying. The average pore size increases with decreasing concentration of nanoparticles from 158 μm to 230 jum while the foam porosity remained constant. After fixation of a temporaiy form of the nanocomposite foams, shape recovery can be triggered either by heat or by exposure to an alternating magnetic field. Compressed foams showed a recovery rate of up to 76 ± 4% in a thermochamber at 80 °C, and a slightly lower recovery rate of up to 65 ± 4% in a magnetic field.}, note = {Online available at: \url{https://doi.org/10.1557/adv.2019.422} (DOI). Luetzow, K.; Weigel, T.; Lendlein, A.: Solvent-based Fabrication Method for Magnetic, Shape-Memory Nanocomposite Foams. MRS Advances. 2020. vol. 5, no. 14 - 15, 785-795. DOI: 10.1557/adv.2019.422}}