@misc{balk_shapememory_hydrogels_2012, 
author={Balk, M., Behl, M., Nöchel, U., Lendlein, A.},
title={Shape-Memory Hydrogels with Switching Segments Based on Oligo(ω-pentadecalactone)},
year={2012},
howpublished = {journal article},
doi = {https://doi.org/10.1002/mame.201200232},
abstract = {We investigated whether dual-shape hydrogels based on crosslinked N-vinyl-2-pyrrolidone can be created, in which oligo(ω-pentadecalactone) (equation image = 2900 g · mol−1, Tm = 89 °C) chain segments contribute to the switching domains. In the obtained hydrogels, the volumetric degree of swelling decreased from 480 to 190% while the E-moduli increased from 0.10 to 0.34 MPa with increasing OPDL content. Furthermore, the equilibrium swollen hydrogels displayed good shape-memory properties with strain fixity ratios above 95% and strain recovery rates above 92%. These shape-memory hydrogels, whose degree of swelling was almost independent of the temperature, might be interesting candidates for various applications such as stimuli-sensitive switches or valves.},
note = {Online available at: \url{https://doi.org/10.1002/mame.201200232} (DOI). Balk, M.; Behl, M.; Nöchel, U.; Lendlein, A.: Shape-Memory Hydrogels with Switching Segments Based on Oligo(ω-pentadecalactone). Macromolecular Materials and Engineering. 2012. vol. 297, no. 12, 1184-1192. DOI: 10.1002/mame.201200232}}